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godot/servers/visual/shader_language.cpp
Rémi Verschelde e4213e66b2 Add missing copyright headers and fix formatting 
Using `misc/scripts/fix_headers.py` on all Godot files.
Some missing header guards were added, and the header inclusion order
was fixed in the Bullet module.
2018-01-05 01:22:23 +01:00

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/*************************************************************************/
/* shader_language.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "shader_language.h"
#include "os/os.h"
#include "print_string.h"
static bool _is_text_char(CharType c) {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
}
static bool _is_number(CharType c) {
return (c >= '0' && c <= '9');
}
static bool _is_hex(CharType c) {
return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
}
String ShaderLanguage::get_operator_text(Operator p_op) {
static const char *op_names[OP_MAX] = { "==",
"!=",
"<",
"<=",
">",
">=",
"&&",
"||",
"!",
"-",
"+",
"-",
"*",
"/",
"%",
"<<",
">>",
"=",
"+=",
"-=",
"*=",
"/=",
"%=",
"<<=",
">>=",
"&=",
"|=",
"^=",
"&",
"|",
"^",
"~",
"++",
"--",
"?",
":",
"++",
"--",
"()",
"construct",
"index" };
return op_names[p_op];
}
const char *ShaderLanguage::token_names[TK_MAX] = {
"EMPTY",
"IDENTIFIER",
"TRUE",
"FALSE",
"REAL_CONSTANT",
"INT_CONSTANT",
"TYPE_VOID",
"TYPE_BOOL",
"TYPE_BVEC2",
"TYPE_BVEC3",
"TYPE_BVEC4",
"TYPE_INT",
"TYPE_IVEC2",
"TYPE_IVEC3",
"TYPE_IVEC4",
"TYPE_UINT",
"TYPE_UVEC2",
"TYPE_UVEC3",
"TYPE_UVEC4",
"TYPE_FLOAT",
"TYPE_VEC2",
"TYPE_VEC3",
"TYPE_VEC4",
"TYPE_MAT2",
"TYPE_MAT3",
"TYPE_MAT4",
"TYPE_SAMPLER2D",
"TYPE_ISAMPLER2D",
"TYPE_USAMPLER2D",
"TYPE_SAMPLERCUBE",
"PRECISION_LOW",
"PRECISION_MID",
"PRECISION_HIGH",
"OP_EQUAL",
"OP_NOT_EQUAL",
"OP_LESS",
"OP_LESS_EQUAL",
"OP_GREATER",
"OP_GREATER_EQUAL",
"OP_AND",
"OP_OR",
"OP_NOT",
"OP_ADD",
"OP_SUB",
"OP_MUL",
"OP_DIV",
"OP_MOD",
"OP_SHIFT_LEFT",
"OP_SHIFT_RIGHT",
"OP_ASSIGN",
"OP_ASSIGN_ADD",
"OP_ASSIGN_SUB",
"OP_ASSIGN_MUL",
"OP_ASSIGN_DIV",
"OP_ASSIGN_MOD",
"OP_ASSIGN_SHIFT_LEFT",
"OP_ASSIGN_SHIFT_RIGHT",
"OP_ASSIGN_BIT_AND",
"OP_ASSIGN_BIT_OR",
"OP_ASSIGN_BIT_XOR",
"OP_BIT_AND",
"OP_BIT_OR",
"OP_BIT_XOR",
"OP_BIT_INVERT",
"OP_INCREMENT",
"OP_DECREMENT",
"CF_IF",
"CF_ELSE",
"CF_FOR",
"CF_WHILE",
"CF_DO",
"CF_SWITCH",
"CF_CASE",
"CF_BREAK",
"CF_CONTINUE",
"CF_RETURN",
"CF_DISCARD",
"BRACKET_OPEN",
"BRACKET_CLOSE",
"CURLY_BRACKET_OPEN",
"CURLY_BRACKET_CLOSE",
"PARENTHESIS_OPEN",
"PARENTHESIS_CLOSE",
"QUESTION",
"COMMA",
"COLON",
"SEMICOLON",
"PERIOD",
"UNIFORM",
"VARYING",
"IN",
"OUT",
"INOUT",
"RENDER_MODE",
"HINT_WHITE_TEXTURE",
"HINT_BLACK_TEXTURE",
"HINT_NORMAL_TEXTURE",
"HINT_ANISO_TEXTURE",
"HINT_ALBEDO_TEXTURE",
"HINT_BLACK_ALBEDO_TEXTURE",
"HINT_COLOR",
"HINT_RANGE",
"SHADER_TYPE",
"CURSOR",
"ERROR",
"EOF",
};
String ShaderLanguage::get_token_text(Token p_token) {
String name = token_names[p_token.type];
if (p_token.type == TK_INT_CONSTANT || p_token.type == TK_REAL_CONSTANT) {
name += "(" + rtos(p_token.constant) + ")";
} else if (p_token.type == TK_IDENTIFIER) {
name += "(" + String(p_token.text) + ")";
} else if (p_token.type == TK_ERROR) {
name += "(" + String(p_token.text) + ")";
}
return name;
}
ShaderLanguage::Token ShaderLanguage::_make_token(TokenType p_type, const StringName &p_text) {
Token tk;
tk.type = p_type;
tk.text = p_text;
tk.line = tk_line;
if (tk.type == TK_ERROR) {
_set_error(p_text);
}
return tk;
}
const ShaderLanguage::KeyWord ShaderLanguage::keyword_list[] = {
{ TK_TRUE, "true" },
{ TK_FALSE, "false" },
{ TK_TYPE_VOID, "void" },
{ TK_TYPE_BOOL, "bool" },
{ TK_TYPE_BVEC2, "bvec2" },
{ TK_TYPE_BVEC3, "bvec3" },
{ TK_TYPE_BVEC4, "bvec4" },
{ TK_TYPE_INT, "int" },
{ TK_TYPE_IVEC2, "ivec2" },
{ TK_TYPE_IVEC3, "ivec3" },
{ TK_TYPE_IVEC4, "ivec4" },
{ TK_TYPE_UINT, "uint" },
{ TK_TYPE_UVEC2, "uvec2" },
{ TK_TYPE_UVEC3, "uvec3" },
{ TK_TYPE_UVEC4, "uvec4" },
{ TK_TYPE_FLOAT, "float" },
{ TK_TYPE_VEC2, "vec2" },
{ TK_TYPE_VEC3, "vec3" },
{ TK_TYPE_VEC4, "vec4" },
{ TK_TYPE_MAT2, "mat2" },
{ TK_TYPE_MAT3, "mat3" },
{ TK_TYPE_MAT4, "mat4" },
{ TK_TYPE_SAMPLER2D, "sampler2D" },
{ TK_TYPE_ISAMPLER2D, "isampler2D" },
{ TK_TYPE_USAMPLER2D, "usampler2D" },
{ TK_TYPE_SAMPLERCUBE, "samplerCube" },
{ TK_INTERPOLATION_FLAT, "flat" },
{ TK_INTERPOLATION_NO_PERSPECTIVE, "noperspective" },
{ TK_INTERPOLATION_SMOOTH, "smooth" },
{ TK_PRECISION_LOW, "lowp" },
{ TK_PRECISION_MID, "mediump" },
{ TK_PRECISION_HIGH, "highp" },
{ TK_CF_IF, "if" },
{ TK_CF_ELSE, "else" },
{ TK_CF_FOR, "for" },
{ TK_CF_WHILE, "while" },
{ TK_CF_DO, "do" },
{ TK_CF_SWITCH, "switch" },
{ TK_CF_CASE, "case" },
{ TK_CF_BREAK, "break" },
{ TK_CF_CONTINUE, "continue" },
{ TK_CF_RETURN, "return" },
{ TK_CF_DISCARD, "discard" },
{ TK_UNIFORM, "uniform" },
{ TK_VARYING, "varying" },
{ TK_ARG_IN, "in" },
{ TK_ARG_OUT, "out" },
{ TK_ARG_INOUT, "inout" },
{ TK_RENDER_MODE, "render_mode" },
{ TK_HINT_WHITE_TEXTURE, "hint_white" },
{ TK_HINT_BLACK_TEXTURE, "hint_black" },
{ TK_HINT_NORMAL_TEXTURE, "hint_normal" },
{ TK_HINT_ANISO_TEXTURE, "hint_aniso" },
{ TK_HINT_ALBEDO_TEXTURE, "hint_albedo" },
{ TK_HINT_BLACK_ALBEDO_TEXTURE, "hint_black_albedo" },
{ TK_HINT_COLOR, "hint_color" },
{ TK_HINT_RANGE, "hint_range" },
{ TK_SHADER_TYPE, "shader_type" },
{ TK_ERROR, NULL }
};
ShaderLanguage::Token ShaderLanguage::_get_token() {
#define GETCHAR(m_idx) (((char_idx + m_idx) < code.length()) ? code[char_idx + m_idx] : CharType(0))
while (true) {
char_idx++;
switch (GETCHAR(-1)) {
case 0:
return _make_token(TK_EOF);
case 0xFFFF:
return _make_token(TK_CURSOR); //for completion
case '\t':
case '\r':
case ' ':
continue;
case '\n':
tk_line++;
continue;
case '/': {
switch (GETCHAR(0)) {
case '*': { // block comment
char_idx++;
while (true) {
if (GETCHAR(0) == 0) {
return _make_token(TK_EOF);
}
if (GETCHAR(0) == '*' && GETCHAR(1) == '/') {
char_idx += 2;
break;
} else if (GETCHAR(0) == '\n') {
tk_line++;
}
char_idx++;
}
} break;
case '/': { // line comment skip
while (true) {
if (GETCHAR(0) == '\n') {
tk_line++;
char_idx++;
break;
}
if (GETCHAR(0) == 0) {
return _make_token(TK_EOF);
}
char_idx++;
}
} break;
case '=': { // diveq
char_idx++;
return _make_token(TK_OP_ASSIGN_DIV);
} break;
default:
return _make_token(TK_OP_DIV);
}
continue; //a comment, continue to next token
} break;
case '=': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_EQUAL);
}
return _make_token(TK_OP_ASSIGN);
} break;
case '<': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_LESS_EQUAL);
} else if (GETCHAR(0) == '<') {
char_idx++;
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SHIFT_LEFT);
}
return _make_token(TK_OP_SHIFT_LEFT);
}
return _make_token(TK_OP_LESS);
} break;
case '>': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_GREATER_EQUAL);
} else if (GETCHAR(0) == '>') {
char_idx++;
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SHIFT_RIGHT);
}
return _make_token(TK_OP_SHIFT_RIGHT);
}
return _make_token(TK_OP_GREATER);
} break;
case '!': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_NOT_EQUAL);
}
return _make_token(TK_OP_NOT);
} break;
//case '"' //string - no strings in shader
//case '\'' //string - no strings in shader
case '{':
return _make_token(TK_CURLY_BRACKET_OPEN);
case '}':
return _make_token(TK_CURLY_BRACKET_CLOSE);
case '[':
return _make_token(TK_BRACKET_OPEN);
case ']':
return _make_token(TK_BRACKET_CLOSE);
case '(':
return _make_token(TK_PARENTHESIS_OPEN);
case ')':
return _make_token(TK_PARENTHESIS_CLOSE);
case ',':
return _make_token(TK_COMMA);
case ';':
return _make_token(TK_SEMICOLON);
case '?':
return _make_token(TK_QUESTION);
case ':':
return _make_token(TK_COLON);
case '^':
return _make_token(TK_OP_BIT_XOR);
case '~':
return _make_token(TK_OP_BIT_INVERT);
case '&': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_BIT_AND);
} else if (GETCHAR(0) == '&') {
char_idx++;
return _make_token(TK_OP_AND);
}
return _make_token(TK_OP_BIT_AND);
} break;
case '|': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_BIT_OR);
} else if (GETCHAR(0) == '|') {
char_idx++;
return _make_token(TK_OP_OR);
}
return _make_token(TK_OP_BIT_OR);
} break;
case '*': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_MUL);
}
return _make_token(TK_OP_MUL);
} break;
case '+': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_ADD);
} else if (GETCHAR(0) == '+') {
char_idx++;
return _make_token(TK_OP_INCREMENT);
}
return _make_token(TK_OP_ADD);
} break;
case '-': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SUB);
} else if (GETCHAR(0) == '-') {
char_idx++;
return _make_token(TK_OP_DECREMENT);
}
return _make_token(TK_OP_SUB);
} break;
case '%': {
if (GETCHAR(0) == '=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_MOD);
}
return _make_token(TK_OP_MOD);
} break;
default: {
char_idx--; //go back one, since we have no idea what this is
if (_is_number(GETCHAR(0)) || (GETCHAR(0) == '.' && _is_number(GETCHAR(1)))) {
// parse number
bool period_found = false;
bool exponent_found = false;
bool hexa_found = false;
bool sign_found = false;
bool minus_exponent_found = false;
String str;
int i = 0;
while (true) {
if (GETCHAR(i) == '.') {
if (period_found || exponent_found)
return _make_token(TK_ERROR, "Invalid numeric constant");
period_found = true;
} else if (GETCHAR(i) == 'x') {
if (hexa_found || str.length() != 1 || str[0] != '0')
return _make_token(TK_ERROR, "Invalid numeric constant");
hexa_found = true;
} else if (GETCHAR(i) == 'e') {
if (hexa_found || exponent_found)
return _make_token(TK_ERROR, "Invalid numeric constant");
exponent_found = true;
} else if (_is_number(GETCHAR(i))) {
//all ok
} else if (hexa_found && _is_hex(GETCHAR(i))) {
} else if ((GETCHAR(i) == '-' || GETCHAR(i) == '+') && exponent_found) {
if (sign_found)
return _make_token(TK_ERROR, "Invalid numeric constant");
sign_found = true;
if (GETCHAR(i) == '-')
minus_exponent_found = true;
} else
break;
str += CharType(GETCHAR(i));
i++;
}
if (!_is_number(str[str.length() - 1]))
return _make_token(TK_ERROR, "Invalid numeric constant");
char_idx += str.length();
Token tk;
if (period_found || minus_exponent_found)
tk.type = TK_REAL_CONSTANT;
else
tk.type = TK_INT_CONSTANT;
if (!str.is_valid_float()) {
return _make_token(TK_ERROR, "Invalid numeric constant");
}
tk.constant = str.to_double();
tk.line = tk_line;
return tk;
}
if (GETCHAR(0) == '.') {
//parse period
char_idx++;
return _make_token(TK_PERIOD);
}
if (_is_text_char(GETCHAR(0))) {
// parse identifier
String str;
while (_is_text_char(GETCHAR(0))) {
str += CharType(GETCHAR(0));
char_idx++;
}
//see if keyword
//should be converted to a static map
int idx = 0;
while (keyword_list[idx].text) {
if (str == keyword_list[idx].text) {
return _make_token(keyword_list[idx].token);
}
idx++;
}
return _make_token(TK_IDENTIFIER, str);
}
if (GETCHAR(0) > 32)
return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)) + ": '" + String::chr(GETCHAR(0)) + "'");
else
return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)));
} break;
}
}
ERR_PRINT("BUG");
return Token();
}
String ShaderLanguage::token_debug(const String &p_code) {
clear();
code = p_code;
String output;
Token tk = _get_token();
while (tk.type != TK_EOF && tk.type != TK_ERROR) {
output += itos(tk_line) + ": " + get_token_text(tk) + "\n";
tk = _get_token();
}
return output;
}
bool ShaderLanguage::is_token_datatype(TokenType p_type) {
return (
p_type == TK_TYPE_VOID ||
p_type == TK_TYPE_BOOL ||
p_type == TK_TYPE_BVEC2 ||
p_type == TK_TYPE_BVEC3 ||
p_type == TK_TYPE_BVEC4 ||
p_type == TK_TYPE_INT ||
p_type == TK_TYPE_IVEC2 ||
p_type == TK_TYPE_IVEC3 ||
p_type == TK_TYPE_IVEC4 ||
p_type == TK_TYPE_UINT ||
p_type == TK_TYPE_UVEC2 ||
p_type == TK_TYPE_UVEC3 ||
p_type == TK_TYPE_UVEC4 ||
p_type == TK_TYPE_FLOAT ||
p_type == TK_TYPE_VEC2 ||
p_type == TK_TYPE_VEC3 ||
p_type == TK_TYPE_VEC4 ||
p_type == TK_TYPE_MAT2 ||
p_type == TK_TYPE_MAT3 ||
p_type == TK_TYPE_MAT4 ||
p_type == TK_TYPE_SAMPLER2D ||
p_type == TK_TYPE_ISAMPLER2D ||
p_type == TK_TYPE_USAMPLER2D ||
p_type == TK_TYPE_SAMPLERCUBE);
}
ShaderLanguage::DataType ShaderLanguage::get_token_datatype(TokenType p_type) {
return DataType(p_type - TK_TYPE_VOID);
}
bool ShaderLanguage::is_token_interpolation(TokenType p_type) {
return (
p_type == TK_INTERPOLATION_FLAT ||
p_type == TK_INTERPOLATION_NO_PERSPECTIVE ||
p_type == TK_INTERPOLATION_SMOOTH);
}
ShaderLanguage::DataInterpolation ShaderLanguage::get_token_interpolation(TokenType p_type) {
if (p_type == TK_INTERPOLATION_FLAT)
return INTERPOLATION_FLAT;
else if (p_type == TK_INTERPOLATION_NO_PERSPECTIVE)
return INTERPOLATION_NO_PERSPECTIVE;
else
return INTERPOLATION_SMOOTH;
}
bool ShaderLanguage::is_token_precision(TokenType p_type) {
return (
p_type == TK_PRECISION_LOW ||
p_type == TK_PRECISION_MID ||
p_type == TK_PRECISION_HIGH);
}
ShaderLanguage::DataPrecision ShaderLanguage::get_token_precision(TokenType p_type) {
if (p_type == TK_PRECISION_LOW)
return PRECISION_LOWP;
else if (p_type == TK_PRECISION_HIGH)
return PRECISION_HIGHP;
else
return PRECISION_MEDIUMP;
}
String ShaderLanguage::get_datatype_name(DataType p_type) {
switch (p_type) {
case TYPE_VOID: return "void";
case TYPE_BOOL: return "bool";
case TYPE_BVEC2: return "bvec2";
case TYPE_BVEC3: return "bvec3";
case TYPE_BVEC4: return "bvec4";
case TYPE_INT: return "int";
case TYPE_IVEC2: return "ivec2";
case TYPE_IVEC3: return "ivec3";
case TYPE_IVEC4: return "ivec4";
case TYPE_UINT: return "uint";
case TYPE_UVEC2: return "uvec2";
case TYPE_UVEC3: return "uvec3";
case TYPE_UVEC4: return "uvec4";
case TYPE_FLOAT: return "float";
case TYPE_VEC2: return "vec2";
case TYPE_VEC3: return "vec3";
case TYPE_VEC4: return "vec4";
case TYPE_MAT2: return "mat2";
case TYPE_MAT3: return "mat3";
case TYPE_MAT4: return "mat4";
case TYPE_SAMPLER2D: return "sampler2D";
case TYPE_ISAMPLER2D: return "isampler2D";
case TYPE_USAMPLER2D: return "usampler2D";
case TYPE_SAMPLERCUBE: return "samplerCube";
}
return "";
}
bool ShaderLanguage::is_token_nonvoid_datatype(TokenType p_type) {
return is_token_datatype(p_type) && p_type != TK_TYPE_VOID;
}
void ShaderLanguage::clear() {
current_function = StringName();
completion_type = COMPLETION_NONE;
completion_block = NULL;
completion_function = StringName();
error_line = 0;
tk_line = 1;
char_idx = 0;
error_set = false;
error_str = "";
while (nodes) {
Node *n = nodes;
nodes = nodes->next;
memdelete(n);
}
}
bool ShaderLanguage::_find_identifier(const BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, const StringName &p_identifier, DataType *r_data_type, IdentifierType *r_type) {
if (p_builtin_types.has(p_identifier)) {
if (r_data_type) {
*r_data_type = p_builtin_types[p_identifier].type;
}
if (r_type) {
*r_type = IDENTIFIER_BUILTIN_VAR;
}
return true;
}
FunctionNode *function = NULL;
while (p_block) {
if (p_block->variables.has(p_identifier)) {
if (r_data_type) {
*r_data_type = p_block->variables[p_identifier].type;
}
if (r_type) {
*r_type = IDENTIFIER_LOCAL_VAR;
}
return true;
}
if (p_block->parent_function) {
function = p_block->parent_function;
break;
} else {
ERR_FAIL_COND_V(!p_block->parent_block, false);
p_block = p_block->parent_block;
}
}
if (function) {
for (int i = 0; i < function->arguments.size(); i++) {
if (function->arguments[i].name == p_identifier) {
if (r_data_type) {
*r_data_type = function->arguments[i].type;
}
if (r_type) {
*r_type = IDENTIFIER_FUNCTION_ARGUMENT;
}
return true;
}
}
}
if (shader->varyings.has(p_identifier)) {
if (r_data_type) {
*r_data_type = shader->varyings[p_identifier].type;
}
if (r_type) {
*r_type = IDENTIFIER_VARYING;
}
return true;
}
if (shader->uniforms.has(p_identifier)) {
if (r_data_type) {
*r_data_type = shader->uniforms[p_identifier].type;
}
if (r_type) {
*r_type = IDENTIFIER_UNIFORM;
}
return true;
}
for (int i = 0; i < shader->functions.size(); i++) {
if (!shader->functions[i].callable)
continue;
if (shader->functions[i].name == p_identifier) {
if (r_data_type) {
*r_data_type = shader->functions[i].function->return_type;
}
if (r_type) {
*r_type = IDENTIFIER_FUNCTION;
}
}
}
return false;
}
bool ShaderLanguage::_validate_operator(OperatorNode *p_op, DataType *r_ret_type) {
bool valid = false;
DataType ret_type;
switch (p_op->op) {
case OP_EQUAL:
case OP_NOT_EQUAL: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb;
ret_type = TYPE_BOOL;
} break;
case OP_LESS:
case OP_LESS_EQUAL:
case OP_GREATER:
case OP_GREATER_EQUAL: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb && (na == TYPE_UINT || na == TYPE_INT || na == TYPE_FLOAT);
ret_type = TYPE_BOOL;
} break;
case OP_AND:
case OP_OR: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb && na == TYPE_BOOL;
ret_type = TYPE_BOOL;
} break;
case OP_NOT: {
DataType na = p_op->arguments[0]->get_datatype();
valid = na == TYPE_BOOL;
ret_type = TYPE_BOOL;
} break;
case OP_INCREMENT:
case OP_DECREMENT:
case OP_POST_INCREMENT:
case OP_POST_DECREMENT:
case OP_NEGATE: {
DataType na = p_op->arguments[0]->get_datatype();
valid = na > TYPE_BOOL && na < TYPE_MAT2;
ret_type = na;
} break;
case OP_ADD:
case OP_SUB:
case OP_MUL:
case OP_DIV: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na > nb) {
//make things easier;
SWAP(na, nb);
}
if (na == nb) {
valid = (na > TYPE_BOOL && na <= TYPE_MAT4);
ret_type = na;
} else if (na == TYPE_INT && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_INT && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_INT && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_UINT && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UINT && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UINT && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_FLOAT && nb == TYPE_VEC2) {
valid = true;
ret_type = TYPE_VEC2;
} else if (na == TYPE_FLOAT && nb == TYPE_VEC3) {
valid = true;
ret_type = TYPE_VEC3;
} else if (na == TYPE_FLOAT && nb == TYPE_VEC4) {
valid = true;
ret_type = TYPE_VEC4;
} else if (p_op->op == OP_MUL && na == TYPE_FLOAT && nb == TYPE_MAT2) {
valid = true;
ret_type = TYPE_MAT2;
} else if (p_op->op == OP_MUL && na == TYPE_FLOAT && nb == TYPE_MAT3) {
valid = true;
ret_type = TYPE_MAT3;
} else if (p_op->op == OP_MUL && na == TYPE_FLOAT && nb == TYPE_MAT4) {
valid = true;
ret_type = TYPE_MAT4;
} else if (p_op->op == OP_MUL && na == TYPE_VEC2 && nb == TYPE_MAT2) {
valid = true;
ret_type = TYPE_VEC2;
} else if (p_op->op == OP_MUL && na == TYPE_VEC3 && nb == TYPE_MAT3) {
valid = true;
ret_type = TYPE_VEC3;
} else if (p_op->op == OP_MUL && na == TYPE_VEC4 && nb == TYPE_MAT4) {
valid = true;
ret_type = TYPE_VEC4;
}
} break;
case OP_ASSIGN_MOD:
case OP_MOD: {
/*
* The operator modulus (%) operates on signed or unsigned integers or integer vectors. The operand
* types must both be signed or both be unsigned. The operands cannot be vectors of differing size. If
* one operand is a scalar and the other vector, then the scalar is applied component-wise to the vector,
* resulting in the same type as the vector. If both are vectors of the same size, the result is computed
* component-wise.
*/
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == TYPE_INT && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_INT;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
/////
} else if (na == TYPE_UINT && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UINT;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
}
} break;
case OP_ASSIGN_SHIFT_LEFT:
case OP_ASSIGN_SHIFT_RIGHT:
case OP_SHIFT_LEFT:
case OP_SHIFT_RIGHT: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == TYPE_INT && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_INT;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_UINT && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UINT;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
}
} break;
case OP_ASSIGN: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na == nb;
ret_type = na;
} break;
case OP_ASSIGN_ADD:
case OP_ASSIGN_SUB:
case OP_ASSIGN_MUL:
case OP_ASSIGN_DIV: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na == nb) {
valid = (na > TYPE_BOOL && na < TYPE_MAT2) || (p_op->op == OP_ASSIGN_MUL && na >= TYPE_MAT2 && na <= TYPE_MAT4);
ret_type = na;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_VEC2 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_VEC2;
} else if (na == TYPE_VEC3 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_VEC3;
} else if (na == TYPE_VEC4 && nb == TYPE_FLOAT) {
valid = true;
ret_type = TYPE_VEC4;
} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_MAT2 && nb == TYPE_VEC2) {
valid = true;
ret_type = TYPE_MAT2;
} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_MAT3 && nb == TYPE_VEC3) {
valid = true;
ret_type = TYPE_MAT3;
} else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_MAT4 && nb == TYPE_VEC4) {
valid = true;
ret_type = TYPE_MAT4;
}
} break;
case OP_ASSIGN_BIT_AND:
case OP_ASSIGN_BIT_OR:
case OP_ASSIGN_BIT_XOR:
case OP_BIT_AND:
case OP_BIT_OR:
case OP_BIT_XOR: {
/*
* The bitwise operators and (&), exclusive-or (^), and inclusive-or (|). The operands must be of type
* signed or unsigned integers or integer vectors. The operands cannot be vectors of differing size. If
* one operand is a scalar and the other a vector, the scalar is applied component-wise to the vector,
* resulting in the same type as the vector. The fundamental types of the operands (signed or unsigned)
* must match.
*/
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na > nb && p_op->op >= OP_BIT_AND) {
//can swap for non assign
SWAP(na, nb);
}
if (na == TYPE_INT && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_INT;
} else if (na == TYPE_IVEC2 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_INT) {
valid = true;
ret_type = TYPE_IVEC4;
} else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) {
valid = true;
ret_type = TYPE_IVEC2;
} else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) {
valid = true;
ret_type = TYPE_IVEC3;
} else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) {
valid = true;
ret_type = TYPE_IVEC4;
/////
} else if (na == TYPE_UINT && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UINT;
} else if (na == TYPE_UVEC2 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UINT) {
valid = true;
ret_type = TYPE_UVEC4;
} else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) {
valid = true;
ret_type = TYPE_UVEC2;
} else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) {
valid = true;
ret_type = TYPE_UVEC3;
} else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) {
valid = true;
ret_type = TYPE_UVEC4;
}
} break;
case OP_BIT_INVERT: { //unaries
DataType na = p_op->arguments[0]->get_datatype();
valid = na >= TYPE_INT && na < TYPE_FLOAT;
ret_type = na;
} break;
case OP_SELECT_IF: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
DataType nc = p_op->arguments[2]->get_datatype();
valid = na == TYPE_BOOL && (nb == nc);
ret_type = nb;
} break;
default: {
ERR_FAIL_V(false);
}
}
if (r_ret_type)
*r_ret_type = ret_type;
return valid;
}
const ShaderLanguage::BuiltinFuncDef ShaderLanguage::builtin_func_defs[] = {
//constructors
{ "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID } },
{ "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_VOID } },
{ "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_BOOL, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_BVEC2, TYPE_BOOL, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BVEC2, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC2, TYPE_BOOL, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BOOL, TYPE_BOOL, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BVEC2, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC3, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC3, TYPE_BOOL, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID } },
{ "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_VOID } },
{ "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "int", TYPE_INT, { TYPE_INT, TYPE_VOID } },
{ "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_VOID } },
{ "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_IVEC2, TYPE_INT, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_IVEC2, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC2, TYPE_INT, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_IVEC2, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC3, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC3, TYPE_INT, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID } },
{ "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_VOID } },
{ "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UVEC2, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC2, TYPE_UINT, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UVEC2, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC3, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "mat2", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "mat3", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "mat4", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "mat2", TYPE_MAT2, { TYPE_FLOAT, TYPE_VOID } },
{ "mat3", TYPE_MAT3, { TYPE_FLOAT, TYPE_VOID } },
{ "mat4", TYPE_MAT4, { TYPE_FLOAT, TYPE_VOID } },
//conversion scalars
{ "int", TYPE_INT, { TYPE_BOOL, TYPE_VOID } },
{ "int", TYPE_INT, { TYPE_INT, TYPE_VOID } },
{ "int", TYPE_INT, { TYPE_UINT, TYPE_VOID } },
{ "int", TYPE_INT, { TYPE_FLOAT, TYPE_VOID } },
{ "float", TYPE_FLOAT, { TYPE_BOOL, TYPE_VOID } },
{ "float", TYPE_FLOAT, { TYPE_INT, TYPE_VOID } },
{ "float", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID } },
{ "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "uint", TYPE_UINT, { TYPE_BOOL, TYPE_VOID } },
{ "uint", TYPE_UINT, { TYPE_INT, TYPE_VOID } },
{ "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID } },
{ "uint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID } },
{ "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID } },
{ "bool", TYPE_BOOL, { TYPE_INT, TYPE_VOID } },
{ "bool", TYPE_BOOL, { TYPE_UINT, TYPE_VOID } },
{ "bool", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID } },
//conversion vectors
{ "ivec2", TYPE_IVEC2, { TYPE_BVEC2, TYPE_VOID } },
{ "ivec2", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "ivec2", TYPE_IVEC2, { TYPE_UVEC2, TYPE_VOID } },
{ "ivec2", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID } },
{ "vec2", TYPE_VEC2, { TYPE_BVEC2, TYPE_VOID } },
{ "vec2", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "vec2", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID } },
{ "vec2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "uvec2", TYPE_UVEC2, { TYPE_BVEC2, TYPE_VOID } },
{ "uvec2", TYPE_UVEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "uvec2", TYPE_UVEC2, { TYPE_UVEC2, TYPE_VOID } },
{ "uvec2", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID } },
{ "bvec2", TYPE_BVEC2, { TYPE_BVEC2, TYPE_VOID } },
{ "bvec2", TYPE_BVEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "bvec2", TYPE_BVEC2, { TYPE_UVEC2, TYPE_VOID } },
{ "bvec2", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_BVEC3, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_UVEC3, TYPE_VOID } },
{ "ivec3", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_BVEC3, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID } },
{ "vec3", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_BVEC3, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_UVEC3, TYPE_VOID } },
{ "uvec3", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_BVEC3, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_UVEC3, TYPE_VOID } },
{ "bvec3", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_BVEC4, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_UVEC4, TYPE_VOID } },
{ "ivec4", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_BVEC4, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID } },
{ "vec4", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_BVEC4, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_UVEC4, TYPE_VOID } },
{ "uvec4", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_BVEC4, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_UVEC4, TYPE_VOID } },
{ "bvec4", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID } },
//builtins - trigonometry
{ "sin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "sin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "sin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "sin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "cos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "cos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "cos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "cos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "tan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "tan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "tan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "tan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "asin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "asin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "asin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "asin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "acos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "acos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "acos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "acos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "sinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "sinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "sinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "sinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "cosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "cosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "cosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "cosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "tanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "tanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "tanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "tanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
//builtins - exponential
{ "pow", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "pow", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "pow", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "pow", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "exp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "exp", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "exp", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "exp", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "log", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "log", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "log", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "log", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "sqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "sqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "sqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "sqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "inversesqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "inversesqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "inversesqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "inversesqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
//builtins - common
{ "abs", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "abs", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "abs", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "abs", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "abs", TYPE_INT, { TYPE_INT, TYPE_VOID } },
{ "abs", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "abs", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "abs", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "abs", TYPE_UINT, { TYPE_UINT, TYPE_VOID } },
{ "abs", TYPE_UVEC2, { TYPE_UVEC2, TYPE_VOID } },
{ "abs", TYPE_UVEC3, { TYPE_UVEC3, TYPE_VOID } },
{ "abs", TYPE_UVEC4, { TYPE_UVEC4, TYPE_VOID } },
{ "sign", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "sign", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "sign", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "sign", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "sign", TYPE_INT, { TYPE_INT, TYPE_VOID } },
{ "sign", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "sign", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "sign", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "floor", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "floor", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "floor", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "floor", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "trunc", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "trunc", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "trunc", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "trunc", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "round", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "round", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "round", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "round", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "ceil", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "ceil", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "ceil", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "ceil", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "fract", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "fract", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "fract", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "fract", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "mod", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "modf", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "modf", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "modf", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "modf", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "min", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "min", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "min", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "min", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "min", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "min", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "max", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "max", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "max", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "max", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "max", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "max", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "max", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "max", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "max", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "max", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "max", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "max", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "clamp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "clamp", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_INT, TYPE_VOID } },
{ "clamp", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_UINT, TYPE_VOID } },
{ "mix", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "mix", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_BOOL, TYPE_VOID } },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_BOOL, TYPE_VOID } },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_BVEC2, TYPE_VOID } },
{ "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_BOOL, TYPE_VOID } },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_BVEC3, TYPE_VOID } },
{ "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_BOOL, TYPE_VOID } },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_BVEC3, TYPE_VOID } },
{ "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "step", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "step", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "step", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "step", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "step", TYPE_VEC2, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } },
{ "step", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID } },
{ "step", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC4, TYPE_VOID } },
{ "smoothstep", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } },
{ "smoothstep", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "smoothstep", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "smoothstep", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "smoothstep", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } },
{ "smoothstep", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC3, TYPE_VOID } },
{ "smoothstep", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC4, TYPE_VOID } },
{ "isnan", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID } },
{ "isnan", TYPE_BOOL, { TYPE_VEC2, TYPE_VOID } },
{ "isnan", TYPE_BOOL, { TYPE_VEC3, TYPE_VOID } },
{ "isnan", TYPE_BOOL, { TYPE_VEC4, TYPE_VOID } },
{ "isinf", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID } },
{ "isinf", TYPE_BOOL, { TYPE_VEC2, TYPE_VOID } },
{ "isinf", TYPE_BOOL, { TYPE_VEC3, TYPE_VOID } },
{ "isinf", TYPE_BOOL, { TYPE_VEC4, TYPE_VOID } },
{ "floatBitsToInt", TYPE_INT, { TYPE_FLOAT, TYPE_VOID } },
{ "floatBitsToInt", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID } },
{ "floatBitsToInt", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID } },
{ "floatBitsToInt", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID } },
{ "floatBitsToUInt", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID } },
{ "floatBitsToUInt", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID } },
{ "floatBitsToUInt", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID } },
{ "floatBitsToUInt", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID } },
{ "intBitsToFloat", TYPE_FLOAT, { TYPE_INT, TYPE_VOID } },
{ "intBitsToFloat", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID } },
{ "intBitsToFloat", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID } },
{ "intBitsToFloat", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID } },
{ "uintBitsToFloat", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID } },
{ "uintBitsToFloat", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID } },
{ "uintBitsToFloat", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID } },
{ "uintBitsToFloat", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID } },
//builtins - geometric
{ "length", TYPE_FLOAT, { TYPE_VEC2, TYPE_VOID } },
{ "length", TYPE_FLOAT, { TYPE_VEC3, TYPE_VOID } },
{ "length", TYPE_FLOAT, { TYPE_VEC4, TYPE_VOID } },
{ "distance", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "distance", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "distance", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "dot", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "dot", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "dot", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "cross", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "normalize", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "normalize", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "normalize", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "reflect", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "refract", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "faceforward", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "faceforward", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "faceforward", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "matrixCompMult", TYPE_MAT2, { TYPE_MAT2, TYPE_MAT2, TYPE_VOID } },
{ "matrixCompMult", TYPE_MAT3, { TYPE_MAT3, TYPE_MAT3, TYPE_VOID } },
{ "matrixCompMult", TYPE_MAT4, { TYPE_MAT4, TYPE_MAT4, TYPE_VOID } },
{ "outerProduct", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "outerProduct", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "outerProduct", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "transpose", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID } },
{ "transpose", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID } },
{ "transpose", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID } },
{ "determinant", TYPE_FLOAT, { TYPE_MAT2, TYPE_VOID } },
{ "determinant", TYPE_FLOAT, { TYPE_MAT3, TYPE_VOID } },
{ "determinant", TYPE_FLOAT, { TYPE_MAT4, TYPE_VOID } },
{ "inverse", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID } },
{ "inverse", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID } },
{ "inverse", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID } },
{ "lessThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "lessThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "lessThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "lessThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "lessThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "lessThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "lessThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "lessThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "lessThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "greaterThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "lessThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "greaterThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "equal", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "equal", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "equal", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "equal", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "equal", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "equal", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "equal", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "equal", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "equal", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "equal", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID } },
{ "equal", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID } },
{ "equal", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID } },
{ "notEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "notEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "notEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } },
{ "notEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } },
{ "notEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } },
{ "notEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } },
{ "notEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } },
{ "notEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } },
{ "notEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } },
{ "notEqual", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID } },
{ "notEqual", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID } },
{ "notEqual", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID } },
{ "any", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID } },
{ "any", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID } },
{ "any", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID } },
{ "all", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID } },
{ "all", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID } },
{ "all", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID } },
{ "not", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID } },
{ "not", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID } },
{ "not", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID } },
//builtins - texture
{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLER2D, TYPE_INT, TYPE_VOID } },
{ "textureSize", TYPE_IVEC2, { TYPE_ISAMPLER2D, TYPE_INT, TYPE_VOID } },
{ "textureSize", TYPE_IVEC2, { TYPE_USAMPLER2D, TYPE_INT, TYPE_VOID } },
{ "textureSize", TYPE_IVEC2, { TYPE_SAMPLERCUBE, TYPE_INT, TYPE_VOID } },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VOID } },
{ "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VOID } },
{ "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VOID } },
{ "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VOID } },
{ "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_VOID } },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_VOID } },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_VOID } },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_VOID } },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_VOID } },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_VOID } },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } },
{ "textureLod", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID } },
{ "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID } },
{ "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID } },
{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } },
{ "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } },
{ "textureGrad", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } },
{ "dFdx", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "dFdx", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "dFdx", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "dFdx", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "dFdy", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "dFdy", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "dFdy", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "dFdy", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ "fwidth", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } },
{ "fwidth", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } },
{ "fwidth", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } },
{ "fwidth", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } },
{ NULL, TYPE_VOID, { TYPE_VOID } }
};
bool ShaderLanguage::_validate_function_call(BlockNode *p_block, OperatorNode *p_func, DataType *r_ret_type) {
ERR_FAIL_COND_V(p_func->op != OP_CALL && p_func->op != OP_CONSTRUCT, NULL);
Vector<DataType> args;
ERR_FAIL_COND_V(p_func->arguments[0]->type != Node::TYPE_VARIABLE, NULL);
StringName name = static_cast<VariableNode *>(p_func->arguments[0])->name.operator String();
bool all_const = true;
for (int i = 1; i < p_func->arguments.size(); i++) {
if (p_func->arguments[i]->type != Node::TYPE_CONSTANT)
all_const = false;
args.push_back(p_func->arguments[i]->get_datatype());
}
int argcount = args.size();
bool failed_builtin = false;
if (argcount <= 4) {
// test builtins
int idx = 0;
while (builtin_func_defs[idx].name) {
if (name == builtin_func_defs[idx].name) {
failed_builtin = true;
bool fail = false;
for (int i = 0; i < argcount; i++) {
if (get_scalar_type(args[i]) == args[i] && p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode *>(p_func->arguments[i + 1]), builtin_func_defs[idx].args[i])) {
//all good
} else if (args[i] != builtin_func_defs[idx].args[i]) {
fail = true;
break;
}
}
if (!fail && argcount < 4 && builtin_func_defs[idx].args[argcount] != TYPE_VOID)
fail = true; //make sure the number of arguments matches
if (!fail) {
if (r_ret_type)
*r_ret_type = builtin_func_defs[idx].rettype;
return true;
}
}
idx++;
}
}
if (failed_builtin) {
String err = "Invalid arguments for built-in function: " + String(name) + "(";
for (int i = 0; i < argcount; i++) {
if (i > 0)
err += ",";
if (p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && p_func->arguments[i + 1]->get_datatype() == TYPE_INT && static_cast<ConstantNode *>(p_func->arguments[i + 1])->values[0].sint < 0) {
err += "-";
}
err += get_datatype_name(args[i]);
}
err += ")";
_set_error(err);
return false;
}
// try existing functions..
StringName exclude_function;
BlockNode *block = p_block;
while (block) {
if (block->parent_function) {
exclude_function = block->parent_function->name;
}
block = block->parent_block;
}
if (name == exclude_function) {
_set_error("Recursion is not allowed");
return false;
}
for (int i = 0; i < shader->functions.size(); i++) {
if (name != shader->functions[i].name)
continue;
if (!shader->functions[i].callable) {
_set_error("Function '" + String(name) + " can't be called from source code.");
return false;
}
FunctionNode *pfunc = shader->functions[i].function;
if (pfunc->arguments.size() != args.size())
continue;
bool fail = false;
for (int i = 0; i < args.size(); i++) {
if (get_scalar_type(args[i]) == args[i] && p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode *>(p_func->arguments[i + 1]), pfunc->arguments[i].type)) {
//all good
} else if (args[i] != pfunc->arguments[i].type) {
fail = true;
break;
}
}
if (!fail) {
if (r_ret_type)
*r_ret_type = pfunc->return_type;
return true;
}
}
return false;
}
bool ShaderLanguage::_parse_function_arguments(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, OperatorNode *p_func, int *r_complete_arg) {
TkPos pos = _get_tkpos();
Token tk = _get_token();
if (tk.type == TK_PARENTHESIS_CLOSE) {
return true;
}
_set_tkpos(pos);
while (true) {
if (r_complete_arg) {
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_CURSOR) {
*r_complete_arg = p_func->arguments.size() - 1;
} else {
_set_tkpos(pos);
}
}
Node *arg = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!arg) {
return false;
}
p_func->arguments.push_back(arg);
tk = _get_token();
if (tk.type == TK_PARENTHESIS_CLOSE) {
return true;
} else if (tk.type != TK_COMMA) {
// something is broken
_set_error("Expected ',' or ')' after argument");
return false;
}
}
return true;
}
bool ShaderLanguage::is_token_operator(TokenType p_type) {
return (p_type == TK_OP_EQUAL ||
p_type == TK_OP_NOT_EQUAL ||
p_type == TK_OP_LESS ||
p_type == TK_OP_LESS_EQUAL ||
p_type == TK_OP_GREATER ||
p_type == TK_OP_GREATER_EQUAL ||
p_type == TK_OP_AND ||
p_type == TK_OP_OR ||
p_type == TK_OP_NOT ||
p_type == TK_OP_ADD ||
p_type == TK_OP_SUB ||
p_type == TK_OP_MUL ||
p_type == TK_OP_DIV ||
p_type == TK_OP_MOD ||
p_type == TK_OP_SHIFT_LEFT ||
p_type == TK_OP_SHIFT_RIGHT ||
p_type == TK_OP_ASSIGN ||
p_type == TK_OP_ASSIGN_ADD ||
p_type == TK_OP_ASSIGN_SUB ||
p_type == TK_OP_ASSIGN_MUL ||
p_type == TK_OP_ASSIGN_DIV ||
p_type == TK_OP_ASSIGN_MOD ||
p_type == TK_OP_ASSIGN_SHIFT_LEFT ||
p_type == TK_OP_ASSIGN_SHIFT_RIGHT ||
p_type == TK_OP_ASSIGN_BIT_AND ||
p_type == TK_OP_ASSIGN_BIT_OR ||
p_type == TK_OP_ASSIGN_BIT_XOR ||
p_type == TK_OP_BIT_AND ||
p_type == TK_OP_BIT_OR ||
p_type == TK_OP_BIT_XOR ||
p_type == TK_OP_BIT_INVERT ||
p_type == TK_OP_INCREMENT ||
p_type == TK_OP_DECREMENT ||
p_type == TK_QUESTION ||
p_type == TK_COLON);
}
bool ShaderLanguage::convert_constant(ConstantNode *p_constant, DataType p_to_type, ConstantNode::Value *p_value) {
if (p_constant->datatype == p_to_type) {
if (p_value) {
for (int i = 0; i < p_constant->values.size(); i++) {
p_value[i] = p_constant->values[i];
}
}
return true;
} else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_FLOAT) {
if (p_value) {
p_value->real = p_constant->values[0].sint;
}
return true;
} else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_FLOAT) {
if (p_value) {
p_value->real = p_constant->values[0].uint;
}
return true;
} else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_UINT) {
if (p_constant->values[0].sint < 0) {
return false;
}
if (p_value) {
p_value->uint = p_constant->values[0].sint;
}
return true;
} else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_INT) {
if (p_constant->values[0].uint > 0x7FFFFFFF) {
return false;
}
if (p_value) {
p_value->sint = p_constant->values[0].uint;
}
return true;
} else
return false;
}
bool ShaderLanguage::is_scalar_type(DataType p_type) {
return p_type == TYPE_BOOL || p_type == TYPE_INT || p_type == TYPE_UINT || p_type == TYPE_FLOAT;
}
bool ShaderLanguage::is_sampler_type(DataType p_type) {
return p_type == TYPE_SAMPLER2D || p_type == TYPE_ISAMPLER2D || p_type == TYPE_USAMPLER2D || p_type == TYPE_SAMPLERCUBE;
}
void ShaderLanguage::get_keyword_list(List<String> *r_keywords) {
Set<String> kws;
int idx = 0;
while (keyword_list[idx].text) {
kws.insert(keyword_list[idx].text);
idx++;
}
idx = 0;
while (builtin_func_defs[idx].name) {
kws.insert(builtin_func_defs[idx].name);
idx++;
}
for (Set<String>::Element *E = kws.front(); E; E = E->next()) {
r_keywords->push_back(E->get());
}
}
void ShaderLanguage::get_builtin_funcs(List<String> *r_keywords) {
Set<String> kws;
int idx = 0;
while (builtin_func_defs[idx].name) {
kws.insert(builtin_func_defs[idx].name);
idx++;
}
for (Set<String>::Element *E = kws.front(); E; E = E->next()) {
r_keywords->push_back(E->get());
}
}
ShaderLanguage::DataType ShaderLanguage::get_scalar_type(DataType p_type) {
static const DataType scalar_types[] = {
TYPE_VOID,
TYPE_BOOL,
TYPE_BOOL,
TYPE_BOOL,
TYPE_BOOL,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_UINT,
TYPE_UINT,
TYPE_UINT,
TYPE_UINT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_INT,
TYPE_UINT,
TYPE_FLOAT,
};
return scalar_types[p_type];
}
bool ShaderLanguage::_get_completable_identifier(BlockNode *p_block, CompletionType p_type, StringName &identifier) {
identifier = StringName();
TkPos pos;
Token tk = _get_token();
if (tk.type == TK_IDENTIFIER) {
identifier = tk.text;
pos = _get_tkpos();
tk = _get_token();
}
if (tk.type == TK_CURSOR) {
completion_type = p_type;
completion_line = tk_line;
completion_block = p_block;
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_IDENTIFIER) {
identifier = identifier.operator String() + tk.text.operator String();
} else {
_set_tkpos(pos);
}
return true;
} else if (identifier != StringName()) {
_set_tkpos(pos);
}
return false;
}
bool ShaderLanguage::_is_operator_assign(Operator p_op) const {
switch (p_op) {
case OP_ASSIGN:
case OP_ASSIGN_ADD:
case OP_ASSIGN_SUB:
case OP_ASSIGN_MUL:
case OP_ASSIGN_DIV:
case OP_ASSIGN_MOD:
case OP_ASSIGN_SHIFT_LEFT:
case OP_ASSIGN_SHIFT_RIGHT:
case OP_ASSIGN_BIT_AND:
case OP_ASSIGN_BIT_OR:
case OP_ASSIGN_BIT_XOR:
return true;
default:
return false;
}
return false;
}
bool ShaderLanguage::_validate_assign(Node *p_node, const Map<StringName, BuiltInInfo> &p_builtin_types) {
if (p_node->type == Node::TYPE_OPERATOR) {
OperatorNode *op = static_cast<OperatorNode *>(p_node);
if (op->type == OP_INDEX) {
return _validate_assign(op->arguments[0], p_builtin_types);
}
}
if (p_node->type == Node::TYPE_VARIABLE) {
VariableNode *var = static_cast<VariableNode *>(p_node);
if (p_builtin_types.has(var->name) && p_builtin_types[var->name].constant) {
return false; //ops not valid
}
}
return true;
}
ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types) {
Vector<Expression> expression;
//Vector<TokenType> operators;
while (true) {
Node *expr = NULL;
TkPos prepos = _get_tkpos();
Token tk = _get_token();
TkPos pos = _get_tkpos();
if (tk.type == TK_PARENTHESIS_OPEN) {
//handle subexpression
expr = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!expr)
return NULL;
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' in expression");
return NULL;
}
} else if (tk.type == TK_REAL_CONSTANT) {
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.real = tk.constant;
constant->values.push_back(v);
constant->datatype = TYPE_FLOAT;
expr = constant;
} else if (tk.type == TK_INT_CONSTANT) {
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.sint = tk.constant;
constant->values.push_back(v);
constant->datatype = TYPE_INT;
expr = constant;
} else if (tk.type == TK_TRUE) {
//print_line("found true");
//handle true constant
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.boolean = true;
constant->values.push_back(v);
constant->datatype = TYPE_BOOL;
expr = constant;
} else if (tk.type == TK_FALSE) {
//handle false constant
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.boolean = false;
constant->values.push_back(v);
constant->datatype = TYPE_BOOL;
expr = constant;
} else if (tk.type == TK_TYPE_VOID) {
//make sure void is not used in expression
_set_error("Void value not allowed in Expression");
return NULL;
} else if (is_token_nonvoid_datatype(tk.type)) {
//basic type constructor
OperatorNode *func = alloc_node<OperatorNode>();
func->op = OP_CONSTRUCT;
if (is_token_precision(tk.type)) {
func->return_precision_cache = get_token_precision(tk.type);
tk = _get_token();
}
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name = get_datatype_name(get_token_datatype(tk.type));
func->arguments.push_back(funcname);
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after type name");
return NULL;
}
int carg = -1;
bool ok = _parse_function_arguments(p_block, p_builtin_types, func, &carg);
if (carg >= 0) {
completion_type = COMPLETION_CALL_ARGUMENTS;
completion_line = tk_line;
completion_block = p_block;
completion_function = funcname->name;
completion_argument = carg;
}
if (!ok)
return NULL;
if (!_validate_function_call(p_block, func, &func->return_cache)) {
_set_error("No matching constructor found for: '" + String(funcname->name) + "'");
return NULL;
}
//validate_Function_call()
expr = _reduce_expression(p_block, func);
} else if (tk.type == TK_IDENTIFIER) {
_set_tkpos(prepos);
StringName identifier;
_get_completable_identifier(p_block, COMPLETION_IDENTIFIER, identifier);
tk = _get_token();
if (tk.type == TK_PARENTHESIS_OPEN) {
//a function
StringName name = identifier;
OperatorNode *func = alloc_node<OperatorNode>();
func->op = OP_CALL;
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name = name;
func->arguments.push_back(funcname);
int carg = -1;
bool ok = _parse_function_arguments(p_block, p_builtin_types, func, &carg);
//test if function was parsed first
for (int i = 0; i < shader->functions.size(); i++) {
if (shader->functions[i].name == name) {
//add to current function as dependency
for (int j = 0; j < shader->functions.size(); j++) {
if (shader->functions[j].name == current_function) {
shader->functions[j].uses_function.insert(name);
break;
}
}
break;
}
}
if (carg >= 0) {
completion_type = COMPLETION_CALL_ARGUMENTS;
completion_line = tk_line;
completion_block = p_block;
completion_function = funcname->name;
completion_argument = carg;
}
if (!ok)
return NULL;
if (!_validate_function_call(p_block, func, &func->return_cache)) {
_set_error("No matching function found for: '" + String(funcname->name) + "'");
return NULL;
}
expr = func;
} else {
//an identifier
_set_tkpos(pos);
DataType data_type;
IdentifierType ident_type;
if (!_find_identifier(p_block, p_builtin_types, identifier, &data_type, &ident_type)) {
_set_error("Unknown identifier in expression: " + String(identifier));
return NULL;
}
if (ident_type == IDENTIFIER_FUNCTION) {
_set_error("Can't use function as identifier: " + String(identifier));
return NULL;
}
VariableNode *varname = alloc_node<VariableNode>();
varname->name = identifier;
varname->datatype_cache = data_type;
expr = varname;
}
} else if (tk.type == TK_OP_ADD) {
continue; //this one does nothing
} else if (tk.type == TK_OP_SUB || tk.type == TK_OP_NOT || tk.type == TK_OP_BIT_INVERT || tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
Expression e;
e.is_op = true;
switch (tk.type) {
case TK_OP_SUB: e.op = OP_NEGATE; break;
case TK_OP_NOT: e.op = OP_NOT; break;
case TK_OP_BIT_INVERT: e.op = OP_BIT_INVERT; break;
case TK_OP_INCREMENT: e.op = OP_INCREMENT; break;
case TK_OP_DECREMENT: e.op = OP_DECREMENT; break;
default: ERR_FAIL_V(NULL);
}
expression.push_back(e);
continue;
} else {
_set_error("Expected expression, found: " + get_token_text(tk));
return NULL;
//nothing
}
ERR_FAIL_COND_V(!expr, NULL);
/* OK now see what's NEXT to the operator.. */
/* OK now see what's NEXT to the operator.. */
/* OK now see what's NEXT to the operator.. */
while (true) {
TkPos pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_PERIOD) {
StringName identifier;
if (_get_completable_identifier(p_block, COMPLETION_INDEX, identifier)) {
completion_base = expr->get_datatype();
}
if (identifier == StringName()) {
_set_error("Expected identifier as member");
return NULL;
}
DataType dt = expr->get_datatype();
String ident = identifier;
bool ok = true;
DataType member_type;
switch (dt) {
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2: {
int l = ident.length();
if (l == 1) {
member_type = DataType(dt - 1);
} else if (l == 2) {
member_type = dt;
} else {
ok = false;
break;
}
const CharType *c = ident.ptr();
for (int i = 0; i < l; i++) {
switch (c[i]) {
case 'r':
case 'g':
case 'x':
case 'y':
break;
default:
ok = false;
break;
}
}
} break;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3: {
int l = ident.length();
if (l == 1) {
member_type = DataType(dt - 2);
} else if (l == 2) {
member_type = DataType(dt - 1);
} else if (l == 3) {
member_type = dt;
} else {
ok = false;
break;
}
const CharType *c = ident.ptr();
for (int i = 0; i < l; i++) {
switch (c[i]) {
case 'r':
case 'g':
case 'b':
case 'x':
case 'y':
case 'z':
break;
default:
ok = false;
break;
}
}
} break;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4: {
int l = ident.length();
if (l == 1) {
member_type = DataType(dt - 3);
} else if (l == 2) {
member_type = DataType(dt - 2);
} else if (l == 3) {
member_type = DataType(dt - 1);
} else if (l == 4) {
member_type = dt;
} else {
ok = false;
break;
}
const CharType *c = ident.ptr();
for (int i = 0; i < l; i++) {
switch (c[i]) {
case 'r':
case 'g':
case 'b':
case 'a':
case 'x':
case 'y':
case 'z':
case 'w':
break;
default:
ok = false;
break;
}
}
} break;
default: {
ok = false;
}
}
if (!ok) {
_set_error("Invalid member for " + get_datatype_name(dt) + " expression: ." + ident);
return NULL;
}
MemberNode *mn = alloc_node<MemberNode>();
mn->basetype = dt;
mn->datatype = member_type;
mn->name = ident;
mn->owner = expr;
expr = mn;
//todo
//member (period) has priority over any operator
//creates a subindexing expression in place
/*} else if (tk.type==TK_BRACKET_OPEN) {
//todo
//subindexing has priority over any operator
//creates a subindexing expression in place
*/
} else if (tk.type == TK_BRACKET_OPEN) {
Node *index = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!index)
return NULL;
if (index->get_datatype() != TYPE_INT && index->get_datatype() != TYPE_UINT) {
_set_error("Only integer datatypes are allowed for indexing");
return NULL;
}
bool index_valid = false;
DataType member_type = TYPE_VOID;
switch (expr->get_datatype()) {
case TYPE_BVEC2:
case TYPE_VEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_MAT2:
if (index->type == Node::TYPE_CONSTANT) {
uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
if (index_constant >= 2) {
_set_error("Index out of range (0-1)");
return NULL;
}
} else {
_set_error("Only integer constants are allowed as index at the moment");
return NULL;
}
index_valid = true;
switch (expr->get_datatype()) {
case TYPE_BVEC2: member_type = TYPE_BOOL; break;
case TYPE_VEC2: member_type = TYPE_FLOAT; break;
case TYPE_IVEC2: member_type = TYPE_INT; break;
case TYPE_UVEC2: member_type = TYPE_UINT; break;
case TYPE_MAT2: member_type = TYPE_VEC2; break;
}
break;
case TYPE_BVEC3:
case TYPE_VEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_MAT3:
if (index->type == Node::TYPE_CONSTANT) {
uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
if (index_constant >= 3) {
_set_error("Index out of range (0-2)");
return NULL;
}
} else {
_set_error("Only integer constants are allowed as index at the moment");
return NULL;
}
index_valid = true;
switch (expr->get_datatype()) {
case TYPE_BVEC3: member_type = TYPE_BOOL; break;
case TYPE_VEC3: member_type = TYPE_FLOAT; break;
case TYPE_IVEC3: member_type = TYPE_INT; break;
case TYPE_UVEC3: member_type = TYPE_UINT; break;
case TYPE_MAT3: member_type = TYPE_VEC3; break;
}
break;
case TYPE_BVEC4:
case TYPE_VEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_MAT4:
if (index->type == Node::TYPE_CONSTANT) {
uint32_t index_constant = static_cast<ConstantNode *>(index)->values[0].uint;
if (index_constant >= 4) {
_set_error("Index out of range (0-3)");
return NULL;
}
} else {
_set_error("Only integer constants are allowed as index at the moment");
return NULL;
}
index_valid = true;
switch (expr->get_datatype()) {
case TYPE_BVEC4: member_type = TYPE_BOOL; break;
case TYPE_VEC4: member_type = TYPE_FLOAT; break;
case TYPE_IVEC4: member_type = TYPE_INT; break;
case TYPE_UVEC4: member_type = TYPE_UINT; break;
case TYPE_MAT4: member_type = TYPE_VEC4; break;
}
break;
default: {
_set_error("Object of type '" + get_datatype_name(expr->get_datatype()) + "' can't be indexed");
return NULL;
}
}
if (!index_valid) {
_set_error("Invalid index");
return NULL;
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op = OP_INDEX;
op->return_cache = member_type;
op->arguments.push_back(expr);
op->arguments.push_back(index);
expr = op;
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']' after indexing expression");
return NULL;
}
} else if (tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
OperatorNode *op = alloc_node<OperatorNode>();
op->op = tk.type == TK_OP_DECREMENT ? OP_POST_DECREMENT : OP_POST_INCREMENT;
op->arguments.push_back(expr);
if (!_validate_operator(op, &op->return_cache)) {
_set_error("Invalid base type for increment/decrement operator");
return NULL;
}
if (!_validate_assign(expr, p_builtin_types)) {
_set_error("Invalid use of increment/decrement operator in constant expression.");
return NULL;
}
expr = op;
} else {
_set_tkpos(pos);
break;
}
}
Expression e;
e.is_op = false;
e.node = expr;
expression.push_back(e);
pos = _get_tkpos();
tk = _get_token();
if (is_token_operator(tk.type)) {
Expression o;
o.is_op = true;
switch (tk.type) {
case TK_OP_EQUAL: o.op = OP_EQUAL; break;
case TK_OP_NOT_EQUAL: o.op = OP_NOT_EQUAL; break;
case TK_OP_LESS: o.op = OP_LESS; break;
case TK_OP_LESS_EQUAL: o.op = OP_LESS_EQUAL; break;
case TK_OP_GREATER: o.op = OP_GREATER; break;
case TK_OP_GREATER_EQUAL: o.op = OP_GREATER_EQUAL; break;
case TK_OP_AND: o.op = OP_AND; break;
case TK_OP_OR: o.op = OP_OR; break;
case TK_OP_ADD: o.op = OP_ADD; break;
case TK_OP_SUB: o.op = OP_SUB; break;
case TK_OP_MUL: o.op = OP_MUL; break;
case TK_OP_DIV: o.op = OP_DIV; break;
case TK_OP_MOD: o.op = OP_MOD; break;
case TK_OP_SHIFT_LEFT: o.op = OP_SHIFT_LEFT; break;
case TK_OP_SHIFT_RIGHT: o.op = OP_SHIFT_RIGHT; break;
case TK_OP_ASSIGN: o.op = OP_ASSIGN; break;
case TK_OP_ASSIGN_ADD: o.op = OP_ASSIGN_ADD; break;
case TK_OP_ASSIGN_SUB: o.op = OP_ASSIGN_SUB; break;
case TK_OP_ASSIGN_MUL: o.op = OP_ASSIGN_MUL; break;
case TK_OP_ASSIGN_DIV: o.op = OP_ASSIGN_DIV; break;
case TK_OP_ASSIGN_MOD: o.op = OP_ASSIGN_MOD; break;
case TK_OP_ASSIGN_SHIFT_LEFT: o.op = OP_ASSIGN_SHIFT_LEFT; break;
case TK_OP_ASSIGN_SHIFT_RIGHT: o.op = OP_ASSIGN_SHIFT_RIGHT; break;
case TK_OP_ASSIGN_BIT_AND: o.op = OP_ASSIGN_BIT_AND; break;
case TK_OP_ASSIGN_BIT_OR: o.op = OP_ASSIGN_BIT_OR; break;
case TK_OP_ASSIGN_BIT_XOR: o.op = OP_ASSIGN_BIT_XOR; break;
case TK_OP_BIT_AND: o.op = OP_BIT_AND; break;
case TK_OP_BIT_OR: o.op = OP_BIT_OR; break;
case TK_OP_BIT_XOR: o.op = OP_BIT_XOR; break;
case TK_QUESTION: o.op = OP_SELECT_IF; break;
case TK_COLON: o.op = OP_SELECT_ELSE; break;
default: {
_set_error("Invalid token for operator: " + get_token_text(tk));
return NULL;
}
}
expression.push_back(o);
} else {
_set_tkpos(pos); //something else, so rollback and end
break;
}
}
/* Reduce the set set of expressions and place them in an operator tree, respecting precedence */
while (expression.size() > 1) {
int next_op = -1;
int min_priority = 0xFFFFF;
bool is_unary = false;
bool is_ternary = false;
for (int i = 0; i < expression.size(); i++) {
if (!expression[i].is_op) {
continue;
}
bool unary = false;
bool ternary = false;
int priority;
switch (expression[i].op) {
case OP_EQUAL: priority = 8; break;
case OP_NOT_EQUAL: priority = 8; break;
case OP_LESS: priority = 7; break;
case OP_LESS_EQUAL: priority = 7; break;
case OP_GREATER: priority = 7; break;
case OP_GREATER_EQUAL: priority = 7; break;
case OP_AND: priority = 12; break;
case OP_OR: priority = 14; break;
case OP_NOT:
priority = 3;
unary = true;
break;
case OP_NEGATE:
priority = 3;
unary = true;
break;
case OP_ADD: priority = 5; break;
case OP_SUB: priority = 5; break;
case OP_MUL: priority = 4; break;
case OP_DIV: priority = 4; break;
case OP_MOD: priority = 4; break;
case OP_SHIFT_LEFT: priority = 6; break;
case OP_SHIFT_RIGHT: priority = 6; break;
case OP_ASSIGN: priority = 16; break;
case OP_ASSIGN_ADD: priority = 16; break;
case OP_ASSIGN_SUB: priority = 16; break;
case OP_ASSIGN_MUL: priority = 16; break;
case OP_ASSIGN_DIV: priority = 16; break;
case OP_ASSIGN_MOD: priority = 16; break;
case OP_ASSIGN_SHIFT_LEFT: priority = 16; break;
case OP_ASSIGN_SHIFT_RIGHT: priority = 16; break;
case OP_ASSIGN_BIT_AND: priority = 16; break;
case OP_ASSIGN_BIT_OR: priority = 16; break;
case OP_ASSIGN_BIT_XOR: priority = 16; break;
case OP_BIT_AND: priority = 9; break;
case OP_BIT_OR: priority = 11; break;
case OP_BIT_XOR: priority = 10; break;
case OP_BIT_INVERT:
priority = 3;
unary = true;
break;
case OP_INCREMENT:
priority = 3;
unary = true;
break;
case OP_DECREMENT:
priority = 3;
unary = true;
break;
case OP_SELECT_IF:
priority = 15;
ternary = true;
break;
case OP_SELECT_ELSE:
priority = 15;
ternary = true;
break;
default:
ERR_FAIL_V(NULL); //unexpected operator
}
if (priority < min_priority) {
// < is used for left to right (default)
// <= is used for right to left
next_op = i;
min_priority = priority;
is_unary = unary;
is_ternary = ternary;
}
}
ERR_FAIL_COND_V(next_op == -1, NULL);
// OK! create operator..
// OK! create operator..
if (is_unary) {
int expr_pos = next_op;
while (expression[expr_pos].is_op) {
expr_pos++;
if (expr_pos == expression.size()) {
//can happen..
_set_error("Unexpected end of expression..");
return NULL;
}
}
//consecutively do unary opeators
for (int i = expr_pos - 1; i >= next_op; i--) {
OperatorNode *op = alloc_node<OperatorNode>();
op->op = expression[i].op;
if ((op->op == OP_INCREMENT || op->op == OP_DECREMENT) && !_validate_assign(expression[i + 1].node, p_builtin_types)) {
_set_error("Can't use increment/decrement operator in constant expression.");
return NULL;
}
op->arguments.push_back(expression[i + 1].node);
expression[i].is_op = false;
expression[i].node = op;
if (!_validate_operator(op, &op->return_cache)) {
String at;
for (int i = 0; i < op->arguments.size(); i++) {
if (i > 0)
at += " and ";
at += get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid arguments to unary operator '" + get_operator_text(op->op) + "' :" + at);
return NULL;
}
expression.remove(i + 1);
}
} else if (is_ternary) {
if (next_op < 1 || next_op >= (expression.size() - 1)) {
_set_error("Parser bug..");
ERR_FAIL_V(NULL);
}
if (next_op + 2 >= expression.size() || !expression[next_op + 2].is_op || expression[next_op + 2].op != OP_SELECT_ELSE) {
_set_error("Mising matching ':' for select operator");
return NULL;
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op = expression[next_op].op;
op->arguments.push_back(expression[next_op - 1].node);
op->arguments.push_back(expression[next_op + 1].node);
op->arguments.push_back(expression[next_op + 3].node);
expression[next_op - 1].is_op = false;
expression[next_op - 1].node = op;
if (!_validate_operator(op, &op->return_cache)) {
String at;
for (int i = 0; i < op->arguments.size(); i++) {
if (i > 0)
at += " and ";
at += get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid argument to ternary ?: operator: " + at);
return NULL;
}
for (int i = 0; i < 4; i++) {
expression.remove(next_op);
}
} else {
if (next_op < 1 || next_op >= (expression.size() - 1)) {
_set_error("Parser bug..");
ERR_FAIL_V(NULL);
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op = expression[next_op].op;
if (expression[next_op - 1].is_op) {
_set_error("Parser bug..");
ERR_FAIL_V(NULL);
}
if (_is_operator_assign(op->op) && !_validate_assign(expression[next_op - 1].node, p_builtin_types)) {
_set_error("Assignment to constant expression.");
return NULL;
}
if (expression[next_op + 1].is_op) {
// this is not invalid and can really appear
// but it becomes invalid anyway because no binary op
// can be followed by a unary op in a valid combination,
// due to how precedence works, unaries will always disappear first
_set_error("Parser bug..");
}
op->arguments.push_back(expression[next_op - 1].node); //expression goes as left
op->arguments.push_back(expression[next_op + 1].node); //next expression goes as right
expression[next_op - 1].node = op;
//replace all 3 nodes by this operator and make it an expression
if (!_validate_operator(op, &op->return_cache)) {
String at;
for (int i = 0; i < op->arguments.size(); i++) {
if (i > 0)
at += " and ";
at += get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid arguments to operator '" + get_operator_text(op->op) + "' :" + at);
return NULL;
}
expression.remove(next_op);
expression.remove(next_op);
}
}
return expression[0].node;
}
ShaderLanguage::Node *ShaderLanguage::_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node) {
if (p_node->type != Node::TYPE_OPERATOR)
return p_node;
//for now only reduce simple constructors
OperatorNode *op = static_cast<OperatorNode *>(p_node);
if (op->op == OP_CONSTRUCT) {
ERR_FAIL_COND_V(op->arguments[0]->type != Node::TYPE_VARIABLE, p_node);
DataType base = get_scalar_type(op->get_datatype());
Vector<ConstantNode::Value> values;
for (int i = 1; i < op->arguments.size(); i++) {
op->arguments[i] = _reduce_expression(p_block, op->arguments[i]);
if (op->arguments[i]->type == Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[i]);
if (get_scalar_type(cn->datatype) == base) {
for (int j = 0; j < cn->values.size(); j++) {
values.push_back(cn->values[j]);
}
} else if (get_scalar_type(cn->datatype) == cn->datatype) {
ConstantNode::Value v;
if (!convert_constant(cn, base, &v)) {
return p_node;
}
values.push_back(v);
} else {
return p_node;
}
} else {
return p_node;
}
}
ConstantNode *cn = alloc_node<ConstantNode>();
cn->datatype = op->get_datatype();
cn->values = values;
return cn;
} else if (op->op == OP_NEGATE) {
op->arguments[0] = _reduce_expression(p_block, op->arguments[0]);
if (op->arguments[0]->type == Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode *>(op->arguments[0]);
DataType base = get_scalar_type(cn->datatype);
Vector<ConstantNode::Value> values;
for (int i = 0; i < cn->values.size(); i++) {
ConstantNode::Value nv;
switch (base) {
case TYPE_BOOL: {
nv.boolean = !cn->values[i].boolean;
} break;
case TYPE_INT: {
nv.sint = -cn->values[i].sint;
} break;
case TYPE_UINT: {
nv.uint = -cn->values[i].uint;
} break;
case TYPE_FLOAT: {
nv.real = -cn->values[i].real;
} break;
default: {}
}
values.push_back(nv);
}
cn->values = values;
return cn;
}
}
return p_node;
}
ShaderLanguage::Node *ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types) {
ShaderLanguage::Node *expr = _parse_expression(p_block, p_builtin_types);
if (!expr) //errored
return NULL;
expr = _reduce_expression(p_block, expr);
return expr;
}
Error ShaderLanguage::_parse_block(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, bool p_just_one, bool p_can_break, bool p_can_continue) {
while (true) {
TkPos pos = _get_tkpos();
Token tk = _get_token();
if (tk.type == TK_CURLY_BRACKET_CLOSE) { //end of block
if (p_just_one) {
_set_error("Unexpected '}'");
return ERR_PARSE_ERROR;
}
return OK;
} else if (is_token_precision(tk.type) || is_token_nonvoid_datatype(tk.type)) {
DataPrecision precision = PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
tk = _get_token();
if (!is_token_nonvoid_datatype(tk.type)) {
_set_error("Expected datatype after precission");
return ERR_PARSE_ERROR;
}
}
DataType type = get_token_datatype(tk.type);
tk = _get_token();
VariableDeclarationNode *vardecl = alloc_node<VariableDeclarationNode>();
vardecl->datatype = type;
vardecl->precision = precision;
p_block->statements.push_back(vardecl);
while (true) {
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier after type");
return ERR_PARSE_ERROR;
}
StringName name = tk.text;
if (_find_identifier(p_block, p_builtin_types, name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
BlockNode::Variable var;
var.type = type;
var.precision = precision;
var.line = tk_line;
VariableDeclarationNode::Declaration decl;
decl.name = name;
decl.initializer = NULL;
tk = _get_token();
if (tk.type == TK_OP_ASSIGN) {
//variable created with assignment! must parse an expression
Node *n = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
decl.initializer = n;
if (var.type != n->get_datatype()) {
_set_error("Invalid assignment of '" + get_datatype_name(n->get_datatype()) + "' to '" + get_datatype_name(var.type) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
p_block->variables[name] = var;
vardecl->declarations.push_back(decl);
if (tk.type == TK_COMMA) {
tk = _get_token();
//another variable
} else if (tk.type == TK_SEMICOLON) {
break;
} else {
_set_error("Expected ',' or ';' after variable");
return ERR_PARSE_ERROR;
}
}
} else if (tk.type == TK_CURLY_BRACKET_OPEN) {
//a sub block, just because..
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = p_block;
_parse_block(block, p_builtin_types, false, p_can_break, p_can_continue);
p_block->statements.push_back(block);
} else if (tk.type == TK_CF_IF) {
//if () {}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after if");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_IF;
Node *n = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after expression");
return ERR_PARSE_ERROR;
}
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err = _parse_block(block, p_builtin_types, true, p_can_break, p_can_continue);
if (err)
return err;
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_CF_ELSE) {
block = alloc_node<BlockNode>();
block->parent_block = p_block;
cf->blocks.push_back(block);
err = _parse_block(block, p_builtin_types, true, p_can_break, p_can_continue);
} else {
_set_tkpos(pos); //rollback
}
} else if (tk.type == TK_CF_WHILE) {
//if () {}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after while");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_WHILE;
Node *n = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after expression");
return ERR_PARSE_ERROR;
}
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err = _parse_block(block, p_builtin_types, true, true, true);
if (err)
return err;
} else if (tk.type == TK_CF_FOR) {
//if () {}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after for");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op = FLOW_OP_FOR;
BlockNode *init_block = alloc_node<BlockNode>();
init_block->parent_block = p_block;
init_block->single_statement = true;
cf->blocks.push_back(init_block);
if (_parse_block(init_block, p_builtin_types, true, false, false) != OK) {
return ERR_PARSE_ERROR;
}
Node *n = _parse_and_reduce_expression(init_block, p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
if (n->get_datatype() != TYPE_BOOL) {
_set_error("Middle expression is expected to be boolean.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after middle expression");
return ERR_PARSE_ERROR;
}
cf->expressions.push_back(n);
n = _parse_and_reduce_expression(init_block, p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
cf->expressions.push_back(n);
tk = _get_token();
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' after third expression");
return ERR_PARSE_ERROR;
}
BlockNode *block = alloc_node<BlockNode>();
block->parent_block = init_block;
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err = _parse_block(block, p_builtin_types, true, true, true);
if (err)
return err;
} else if (tk.type == TK_CF_RETURN) {
//check return type
BlockNode *b = p_block;
while (b && !b->parent_function) {
b = b->parent_block;
}
if (!b) {
_set_error("Bug");
return ERR_BUG;
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_RETURN;
pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_SEMICOLON) {
//all is good
if (b->parent_function->return_type != TYPE_VOID) {
_set_error("Expected return with expression of type '" + get_datatype_name(b->parent_function->return_type) + "'");
return ERR_PARSE_ERROR;
}
} else {
_set_tkpos(pos); //rollback, wants expression
Node *expr = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!expr)
return ERR_PARSE_ERROR;
if (b->parent_function->return_type != expr->get_datatype()) {
_set_error("Expected return expression of type '" + get_datatype_name(b->parent_function->return_type) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after return expression");
return ERR_PARSE_ERROR;
}
flow->expressions.push_back(expr);
}
p_block->statements.push_back(flow);
} else if (tk.type == TK_CF_DISCARD) {
//check return type
BlockNode *b = p_block;
while (b && !b->parent_function) {
b = b->parent_block;
}
if (!b) {
_set_error("Bug");
return ERR_BUG;
}
if (!b->parent_function->can_discard) {
_set_error("Use of 'discard' is not allowed here.");
return ERR_PARSE_ERROR;
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_DISCARD;
pos = _get_tkpos();
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
//all is good
_set_error("Expected ';' after discard");
}
p_block->statements.push_back(flow);
} else if (tk.type == TK_CF_BREAK) {
if (!p_can_break) {
//all is good
_set_error("Breaking is not allowed here");
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_BREAK;
pos = _get_tkpos();
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
//all is good
_set_error("Expected ';' after break");
}
p_block->statements.push_back(flow);
} else if (tk.type == TK_CF_CONTINUE) {
if (!p_can_break) {
//all is good
_set_error("Contiuning is not allowed here");
}
ControlFlowNode *flow = alloc_node<ControlFlowNode>();
flow->flow_op = FLOW_OP_CONTINUE;
pos = _get_tkpos();
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
//all is good
_set_error("Expected ';' after continue");
}
p_block->statements.push_back(flow);
} else {
//nothng else, so expression
_set_tkpos(pos); //rollback
Node *expr = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!expr)
return ERR_PARSE_ERROR;
p_block->statements.push_back(expr);
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after statement");
return ERR_PARSE_ERROR;
}
}
if (p_just_one)
break;
}
return OK;
}
Error ShaderLanguage::_parse_shader(const Map<StringName, FunctionInfo> &p_functions, const Set<String> &p_render_modes, const Set<String> &p_shader_types) {
Token tk = _get_token();
if (tk.type != TK_SHADER_TYPE) {
_set_error("Expected 'shader_type' at the beginning of shader.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier after 'shader_type', indicating type of shader.");
return ERR_PARSE_ERROR;
}
String shader_type_identifier;
shader_type_identifier = tk.text;
if (!p_shader_types.has(shader_type_identifier)) {
String valid;
for (Set<String>::Element *E = p_shader_types.front(); E; E = E->next()) {
if (valid != String()) {
valid += ", ";
}
valid += "'" + E->get() + "'";
}
_set_error("Invalid shader type, valid types are: " + valid);
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';' after 'shader_type <type>'.");
}
tk = _get_token();
int texture_uniforms = 0;
int uniforms = 0;
while (tk.type != TK_EOF) {
switch (tk.type) {
case TK_RENDER_MODE: {
while (true) {
StringName mode;
_get_completable_identifier(NULL, COMPLETION_RENDER_MODE, mode);
if (mode == StringName()) {
_set_error("Expected identifier for render mode");
return ERR_PARSE_ERROR;
}
if (!p_render_modes.has(mode)) {
_set_error("Invalid render mode: '" + String(mode) + "'");
return ERR_PARSE_ERROR;
}
if (shader->render_modes.find(mode) != -1) {
_set_error("Duplicate render mode: '" + String(mode) + "'");
return ERR_PARSE_ERROR;
}
shader->render_modes.push_back(mode);
tk = _get_token();
if (tk.type == TK_COMMA) {
//all good, do nothing
} else if (tk.type == TK_SEMICOLON) {
break; //done
} else {
_set_error("Unexpected token: " + get_token_text(tk));
return ERR_PARSE_ERROR;
}
}
} break;
case TK_UNIFORM:
case TK_VARYING: {
bool uniform = tk.type == TK_UNIFORM;
DataPrecision precision = PRECISION_DEFAULT;
DataInterpolation interpolation = INTERPOLATION_SMOOTH;
DataType type;
StringName name;
tk = _get_token();
if (is_token_interpolation(tk.type)) {
interpolation = get_token_interpolation(tk.type);
tk = _get_token();
}
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected datatype. ");
return ERR_PARSE_ERROR;
}
type = get_token_datatype(tk.type);
if (type == TYPE_VOID) {
_set_error("void datatype not allowed here");
return ERR_PARSE_ERROR;
}
if (!uniform && type < TYPE_FLOAT && type > TYPE_VEC4) { // FIXME: always false! should it be || instead?
_set_error("Invalid type for varying, only float,vec2,vec3,vec4 allowed.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier!");
return ERR_PARSE_ERROR;
}
name = tk.text;
if (_find_identifier(NULL, Map<StringName, BuiltInInfo>(), name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
if (uniform) {
ShaderNode::Uniform uniform;
if (is_sampler_type(type)) {
uniform.texture_order = texture_uniforms++;
uniform.order = -1;
} else {
uniform.texture_order = -1;
uniform.order = uniforms++;
}
uniform.type = type;
uniform.precission = precision;
//todo parse default value
tk = _get_token();
if (tk.type == TK_OP_ASSIGN) {
Node *expr = _parse_and_reduce_expression(NULL, Map<StringName, BuiltInInfo>());
if (!expr)
return ERR_PARSE_ERROR;
if (expr->type != Node::TYPE_CONSTANT) {
_set_error("Expected constant expression after '='");
return ERR_PARSE_ERROR;
}
ConstantNode *cn = static_cast<ConstantNode *>(expr);
uniform.default_value.resize(cn->values.size());
if (!convert_constant(cn, uniform.type, uniform.default_value.ptrw())) {
_set_error("Can't convert constant to " + get_datatype_name(uniform.type));
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
if (tk.type == TK_COLON) {
//hint
tk = _get_token();
if (tk.type == TK_HINT_WHITE_TEXTURE) {
uniform.hint = ShaderNode::Uniform::HINT_WHITE;
} else if (tk.type == TK_HINT_BLACK_TEXTURE) {
uniform.hint = ShaderNode::Uniform::HINT_BLACK;
} else if (tk.type == TK_HINT_NORMAL_TEXTURE) {
uniform.hint = ShaderNode::Uniform::HINT_NORMAL;
} else if (tk.type == TK_HINT_ANISO_TEXTURE) {
uniform.hint = ShaderNode::Uniform::HINT_ANISO;
} else if (tk.type == TK_HINT_ALBEDO_TEXTURE) {
uniform.hint = ShaderNode::Uniform::HINT_ALBEDO;
} else if (tk.type == TK_HINT_BLACK_ALBEDO_TEXTURE) {
uniform.hint = ShaderNode::Uniform::HINT_BLACK_ALBEDO;
} else if (tk.type == TK_HINT_COLOR) {
if (type != TYPE_VEC4) {
_set_error("Color hint is for vec4 only");
return ERR_PARSE_ERROR;
}
uniform.hint = ShaderNode::Uniform::HINT_COLOR;
} else if (tk.type == TK_HINT_RANGE) {
uniform.hint = ShaderNode::Uniform::HINT_RANGE;
if (type != TYPE_FLOAT && type != TYPE_INT) {
_set_error("Range hint is for float and int only");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after hint_range");
return ERR_PARSE_ERROR;
}
tk = _get_token();
float sign = 1.0;
if (tk.type == TK_OP_SUB) {
sign = -1.0;
tk = _get_token();
}
if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant");
return ERR_PARSE_ERROR;
}
uniform.hint_range[0] = tk.constant;
uniform.hint_range[0] *= sign;
tk = _get_token();
if (tk.type != TK_COMMA) {
_set_error("Expected ',' after integer constant");
return ERR_PARSE_ERROR;
}
tk = _get_token();
sign = 1.0;
if (tk.type == TK_OP_SUB) {
sign = -1.0;
tk = _get_token();
}
if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant after ','");
return ERR_PARSE_ERROR;
}
uniform.hint_range[1] = tk.constant;
uniform.hint_range[1] *= sign;
tk = _get_token();
if (tk.type == TK_COMMA) {
tk = _get_token();
if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) {
_set_error("Expected integer constant after ','");
return ERR_PARSE_ERROR;
}
uniform.hint_range[2] = tk.constant;
tk = _get_token();
} else {
if (type == TYPE_INT) {
uniform.hint_range[2] = 1;
} else {
uniform.hint_range[2] = 0.001;
}
}
if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ','");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected valid type hint after ':'.");
}
if (uniform.hint != ShaderNode::Uniform::HINT_RANGE && uniform.hint != ShaderNode::Uniform::HINT_NONE && uniform.hint != ShaderNode::Uniform::HINT_COLOR && type <= TYPE_MAT4) {
_set_error("This hint is only for sampler types");
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
shader->uniforms[name] = uniform;
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
} else {
ShaderNode::Varying varying;
varying.type = type;
varying.precission = precision;
varying.interpolation = interpolation;
shader->varyings[name] = varying;
tk = _get_token();
if (tk.type != TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
}
} break;
default: {
//function
DataPrecision precision = PRECISION_DEFAULT;
DataType type;
StringName name;
if (is_token_precision(tk.type)) {
precision = get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected function, uniform or varying ");
return ERR_PARSE_ERROR;
}
type = get_token_datatype(tk.type);
_get_completable_identifier(NULL, COMPLETION_MAIN_FUNCTION, name);
if (name == StringName()) {
_set_error("Expected function name after datatype");
return ERR_PARSE_ERROR;
}
if (_find_identifier(NULL, Map<StringName, BuiltInInfo>(), name)) {
_set_error("Redefinition of '" + String(name) + "'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after identifier");
return ERR_PARSE_ERROR;
}
Map<StringName, BuiltInInfo> builtin_types;
if (p_functions.has(name)) {
builtin_types = p_functions[name].built_ins;
}
ShaderNode::Function function;
function.callable = !p_functions.has(name);
function.name = name;
FunctionNode *func_node = alloc_node<FunctionNode>();
function.function = func_node;
shader->functions.push_back(function);
func_node->name = name;
func_node->return_type = type;
func_node->return_precision = precision;
if (p_functions.has(name)) {
func_node->can_discard = p_functions[name].can_discard;
}
func_node->body = alloc_node<BlockNode>();
func_node->body->parent_function = func_node;
tk = _get_token();
while (true) {
if (tk.type == TK_PARENTHESIS_CLOSE) {
break;
}
ArgumentQualifier qualifier = ARGUMENT_QUALIFIER_IN;
if (tk.type == TK_ARG_IN) {
qualifier = ARGUMENT_QUALIFIER_IN;
tk = _get_token();
} else if (tk.type == TK_ARG_OUT) {
qualifier = ARGUMENT_QUALIFIER_OUT;
tk = _get_token();
} else if (tk.type == TK_ARG_INOUT) {
qualifier = ARGUMENT_QUALIFIER_INOUT;
tk = _get_token();
}
DataType ptype;
StringName pname;
DataPrecision pprecision = PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
pprecision = get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected a valid datatype for argument");
return ERR_PARSE_ERROR;
}
ptype = get_token_datatype(tk.type);
if (ptype == TYPE_VOID) {
_set_error("void not allowed in argument");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type != TK_IDENTIFIER) {
_set_error("Expected identifier for argument name");
return ERR_PARSE_ERROR;
}
pname = tk.text;
if (_find_identifier(func_node->body, builtin_types, pname)) {
_set_error("Redefinition of '" + String(pname) + "'");
return ERR_PARSE_ERROR;
}
FunctionNode::Argument arg;
arg.type = ptype;
arg.name = pname;
arg.precision = pprecision;
arg.qualifier = qualifier;
func_node->arguments.push_back(arg);
tk = _get_token();
if (tk.type == TK_COMMA) {
tk = _get_token();
//do none and go on
} else if (tk.type != TK_PARENTHESIS_CLOSE) {
_set_error("Expected ',' or ')' after identifier");
return ERR_PARSE_ERROR;
}
}
if (p_functions.has(name)) {
//if one of the core functions, make sure they are of the correct form
if (func_node->arguments.size() > 0) {
_set_error("Function '" + String(name) + "' expects no arguments.");
return ERR_PARSE_ERROR;
}
if (func_node->return_type != TYPE_VOID) {
_set_error("Function '" + String(name) + "' must be of void return type.");
return ERR_PARSE_ERROR;
}
}
//all good let's parse inside the function!
tk = _get_token();
if (tk.type != TK_CURLY_BRACKET_OPEN) {
_set_error("Expected '{' to begin function");
return ERR_PARSE_ERROR;
}
current_function = name;
Error err = _parse_block(func_node->body, builtin_types);
if (err)
return err;
current_function = StringName();
}
}
tk = _get_token();
}
return OK;
}
String ShaderLanguage::get_shader_type(const String &p_code) {
bool reading_type = false;
String cur_identifier;
for (int i = 0; i < p_code.length(); i++) {
if (p_code[i] == ';') {
break;
} else if (p_code[i] <= 32) {
if (cur_identifier != String()) {
if (!reading_type) {
if (cur_identifier != "shader_type") {
return String();
}
reading_type = true;
cur_identifier = String();
} else {
return cur_identifier;
}
}
} else {
cur_identifier += String::chr(p_code[i]);
}
}
if (reading_type)
return cur_identifier;
return String();
}
Error ShaderLanguage::compile(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Set<String> &p_render_modes, const Set<String> &p_shader_types) {
clear();
code = p_code;
nodes = NULL;
shader = alloc_node<ShaderNode>();
Error err = _parse_shader(p_functions, p_render_modes, p_shader_types);
if (err != OK) {
return err;
}
return OK;
}
Error ShaderLanguage::complete(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Set<String> &p_render_modes, const Set<String> &p_shader_types, List<String> *r_options, String &r_call_hint) {
clear();
code = p_code;
nodes = NULL;
shader = alloc_node<ShaderNode>();
Error err = _parse_shader(p_functions, p_render_modes, p_shader_types);
if (err != OK)
ERR_PRINT("Failed to parse shader");
switch (completion_type) {
case COMPLETION_NONE: {
//do none
return ERR_PARSE_ERROR;
} break;
case COMPLETION_RENDER_MODE: {
for (const Set<String>::Element *E = p_render_modes.front(); E; E = E->next()) {
r_options->push_back(E->get());
}
return OK;
} break;
case COMPLETION_MAIN_FUNCTION: {
for (const Map<StringName, FunctionInfo>::Element *E = p_functions.front(); E; E = E->next()) {
r_options->push_back(E->key());
}
return OK;
} break;
case COMPLETION_IDENTIFIER:
case COMPLETION_FUNCTION_CALL: {
bool comp_ident = completion_type == COMPLETION_IDENTIFIER;
Set<String> matches;
StringName skip_function;
BlockNode *block = completion_block;
while (block) {
if (comp_ident) {
for (const Map<StringName, BlockNode::Variable>::Element *E = block->variables.front(); E; E = E->next()) {
if (E->get().line < completion_line) {
matches.insert(E->key());
}
}
}
if (block->parent_function) {
if (comp_ident) {
for (int i = 0; i < block->parent_function->arguments.size(); i++) {
matches.insert(block->parent_function->arguments[i].name);
}
}
skip_function = block->parent_function->name;
}
block = block->parent_block;
}
if (comp_ident && skip_function != StringName() && p_functions.has(skip_function)) {
for (Map<StringName, BuiltInInfo>::Element *E = p_functions[skip_function].built_ins.front(); E; E = E->next()) {
matches.insert(E->key());
}
}
if (comp_ident) {
for (const Map<StringName, ShaderNode::Varying>::Element *E = shader->varyings.front(); E; E = E->next()) {
matches.insert(E->key());
}
for (const Map<StringName, ShaderNode::Uniform>::Element *E = shader->uniforms.front(); E; E = E->next()) {
matches.insert(E->key());
}
}
for (int i = 0; i < shader->functions.size(); i++) {
if (!shader->functions[i].callable || shader->functions[i].name == skip_function)
continue;
matches.insert(String(shader->functions[i].name) + "(");
}
int idx = 0;
while (builtin_func_defs[idx].name) {
matches.insert(String(builtin_func_defs[idx].name) + "(");
idx++;
}
for (Set<String>::Element *E = matches.front(); E; E = E->next()) {
r_options->push_back(E->get());
}
return OK;
} break;
case COMPLETION_CALL_ARGUMENTS: {
for (int i = 0; i < shader->functions.size(); i++) {
if (!shader->functions[i].callable)
continue;
if (shader->functions[i].name == completion_function) {
String calltip;
calltip += get_datatype_name(shader->functions[i].function->return_type);
calltip += " ";
calltip += shader->functions[i].name;
calltip += "(";
for (int j = 0; j < shader->functions[i].function->arguments.size(); j++) {
if (j > 0)
calltip += ", ";
else
calltip += " ";
if (j == completion_argument) {
calltip += CharType(0xFFFF);
}
calltip += get_datatype_name(shader->functions[i].function->arguments[j].type);
calltip += " ";
calltip += shader->functions[i].function->arguments[j].name;
if (j == completion_argument) {
calltip += CharType(0xFFFF);
}
}
if (shader->functions[i].function->arguments.size())
calltip += " ";
calltip += ")";
r_call_hint = calltip;
return OK;
}
}
int idx = 0;
String calltip;
while (builtin_func_defs[idx].name) {
if (completion_function == builtin_func_defs[idx].name) {
if (calltip.length())
calltip += "\n";
calltip += get_datatype_name(builtin_func_defs[idx].rettype);
calltip += " ";
calltip += builtin_func_defs[idx].name;
calltip += "(";
bool found_arg = false;
for (int i = 0; i < 4; i++) {
if (builtin_func_defs[idx].args[i] == TYPE_VOID)
break;
if (i > 0)
calltip += ", ";
else
calltip += " ";
if (i == completion_argument) {
calltip += CharType(0xFFFF);
}
calltip += get_datatype_name(builtin_func_defs[idx].args[i]);
if (i == completion_argument) {
calltip += CharType(0xFFFF);
}
found_arg = true;
}
if (found_arg)
calltip += " ";
calltip += ")";
}
idx++;
}
r_call_hint = calltip;
return OK;
} break;
case COMPLETION_INDEX: {
const char colv[4] = { 'r', 'g', 'b', 'a' };
const char coordv[4] = { 'x', 'y', 'z', 'w' };
int limit = 0;
switch (completion_base) {
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2: {
limit = 2;
} break;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3: {
limit = 3;
} break;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4: {
limit = 4;
} break;
case TYPE_MAT2: limit = 2; break;
case TYPE_MAT3: limit = 3; break;
case TYPE_MAT4: limit = 4; break;
default: {}
}
for (int i = 0; i < limit; i++) {
r_options->push_back(String::chr(colv[i]));
r_options->push_back(String::chr(coordv[i]));
}
} break;
}
return ERR_PARSE_ERROR;
}
String ShaderLanguage::get_error_text() {
return error_str;
}
int ShaderLanguage::get_error_line() {
return error_line;
}
ShaderLanguage::ShaderNode *ShaderLanguage::get_shader() {
return shader;
}
ShaderLanguage::ShaderLanguage() {
nodes = NULL;
}
ShaderLanguage::~ShaderLanguage() {
clear();
}
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