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Merge pull request #36176 from Chaosus/shader_fix_const_crash 

Fix shader crash if pass const argument to 'out/inout' parameter
This commit is contained in:
Yuri Roubinsky 2020-02-13 17:00:37 +03:00 committed by GitHub
parent dcfe44f447 516aa46fe5
commit ef51726ff3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 93 additions and 31 deletions
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121
servers/visual/shader_language.cpp
View File

@ -903,6 +903,9 @@ bool ShaderLanguage::_find_identifier(const BlockNode *p_block, const Map<String
if (r_data_type) {
*r_data_type = p_builtin_types[p_identifier].type;
}
if (r_is_const) {
*r_is_const = p_builtin_types[p_identifier].constant;
}
if (r_type) {
*r_type = IDENTIFIER_BUILTIN_VAR;
}
@ -3066,6 +3069,8 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
Token tk = _get_token();
TkPos pos = _get_tkpos();
bool is_const = false;
if (tk.type == TK_PARENTHESIS_OPEN) {
//handle subexpression
@ -3457,40 +3462,82 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
for (int i = 0; i < call_function->arguments.size(); i++) {
int argidx = i + 1;
if (argidx < func->arguments.size() && is_sampler_type(call_function->arguments[i].type)) {
//let's see where our argument comes from
Node *n = func->arguments[argidx];
ERR_CONTINUE(n->type != Node::TYPE_VARIABLE); //bug? this should always be a variable
VariableNode *vn = static_cast<VariableNode *>(n);
StringName varname = vn->name;
if (shader->uniforms.has(varname)) {
//being sampler, this either comes from a uniform
ShaderNode::Uniform *u = &shader->uniforms[varname];
ERR_CONTINUE(u->type != call_function->arguments[i].type); //this should have been validated previously
//propagate
if (!_propagate_function_call_sampler_uniform_settings(name, i, u->filter, u->repeat)) {
return NULL;
}
} else if (p_builtin_types.has(varname)) {
//a built-in
if (!_propagate_function_call_sampler_builtin_reference(name, i, varname)) {
return NULL;
}
} else {
//or this comes from an argument, but nothing else can be a sampler
bool found = false;
for (int j = 0; j < base_function->arguments.size(); j++) {
if (base_function->arguments[j].name == varname) {
if (!base_function->arguments[j].tex_argument_connect.has(call_function->name)) {
base_function->arguments.write[j].tex_argument_connect[call_function->name] = Set<int>();
if (argidx < func->arguments.size()) {
if (call_function->arguments[i].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_OUT || call_function->arguments[i].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT) {
bool error = false;
Node *n = func->arguments[argidx];
if (n->type == Node::TYPE_CONSTANT || n->type == Node::TYPE_OPERATOR) {
error = true;
} else if (n->type == Node::TYPE_ARRAY) {
ArrayNode *an = static_cast<ArrayNode *>(n);
if (an->call_expression != NULL) {
error = true;
}
} else if (n->type == Node::TYPE_VARIABLE) {
VariableNode *vn = static_cast<VariableNode *>(n);
if (vn->is_const) {
error = true;
} else {
StringName varname = vn->name;
if (shader->uniforms.has(varname)) {
error = true;
} else {
if (p_builtin_types.has(varname)) {
BuiltInInfo info = p_builtin_types[varname];
if (info.constant) {
error = true;
}
}
}
base_function->arguments.write[j].tex_argument_connect[call_function->name].insert(i);
found = true;
break;
}
} else if (n->type == Node::TYPE_MEMBER) {
MemberNode *mn = static_cast<MemberNode *>(n);
if (mn->basetype_const) {
error = true;
}
}
ERR_CONTINUE(!found);
if (error) {
_set_error(vformat("Constant value cannot be passed for '%s' parameter!", _get_qualifier_str(call_function->arguments[i].qualifier)));
return NULL;
}
}
if (is_sampler_type(call_function->arguments[i].type)) {
//let's see where our argument comes from
Node *n = func->arguments[argidx];
ERR_CONTINUE(n->type != Node::TYPE_VARIABLE); //bug? this should always be a variable
VariableNode *vn = static_cast<VariableNode *>(n);
StringName varname = vn->name;
if (shader->uniforms.has(varname)) {
//being sampler, this either comes from a uniform
ShaderNode::Uniform *u = &shader->uniforms[varname];
ERR_CONTINUE(u->type != call_function->arguments[i].type); //this should have been validated previously
//propagate
if (!_propagate_function_call_sampler_uniform_settings(name, i, u->filter, u->repeat)) {
return NULL;
}
} else if (p_builtin_types.has(varname)) {
//a built-in
if (!_propagate_function_call_sampler_builtin_reference(name, i, varname)) {
return NULL;
}
} else {
//or this comes from an argument, but nothing else can be a sampler
bool found = false;
for (int j = 0; j < base_function->arguments.size(); j++) {
if (base_function->arguments[j].name == varname) {
if (!base_function->arguments[j].tex_argument_connect.has(call_function->name)) {
base_function->arguments.write[j].tex_argument_connect[call_function->name] = Set<int>();
}
base_function->arguments.write[j].tex_argument_connect[call_function->name].insert(i);
found = true;
break;
}
}
ERR_CONTINUE(!found);
}
}
} else {
break;
}
}
}
@ -3504,7 +3551,6 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
DataType data_type;
IdentifierType ident_type;
bool is_const = false;
int array_size = 0;
StringName struct_name;
@ -3812,6 +3858,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
MemberNode *mn = alloc_node<MemberNode>();
mn->basetype = dt;
mn->basetype_const = is_const;
mn->datatype = member_type;
mn->base_struct_name = st;
mn->struct_name = member_struct_name;
@ -5359,6 +5406,18 @@ String ShaderLanguage::_get_shader_type_list(const Set<String> &p_shader_types)
return valid_types;
}
String ShaderLanguage::_get_qualifier_str(ArgumentQualifier p_qualifier) const {
switch (p_qualifier) {
case ArgumentQualifier::ARGUMENT_QUALIFIER_IN:
return "in";
case ArgumentQualifier::ARGUMENT_QUALIFIER_OUT:
return "out";
case ArgumentQualifier::ARGUMENT_QUALIFIER_INOUT:
return "inout";
}
return "";
}
Error ShaderLanguage::_validate_datatype(DataType p_type) {
if (VisualServer::get_singleton()->is_low_end()) {
bool invalid_type = false;

3
servers/visual/shader_language.h
View File

@ -529,6 +529,7 @@ public:
struct MemberNode : public Node {
DataType basetype;
bool basetype_const;
StringName base_struct_name;
DataPrecision precision;
DataType datatype;
@ -544,6 +545,7 @@ public:
MemberNode() :
Node(TYPE_MEMBER),
basetype(TYPE_VOID),
basetype_const(false),
datatype(TYPE_VOID),
array_size(0),
owner(NULL),
@ -866,6 +868,7 @@ private:
Node *_parse_and_reduce_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types);
Error _parse_block(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, bool p_just_one = false, bool p_can_break = false, bool p_can_continue = false);
String _get_shader_type_list(const Set<String> &p_shader_types) const;
String _get_qualifier_str(ArgumentQualifier p_qualifier) const;
Error _parse_shader(const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types);