500 lines
18 KiB
C++
500 lines
18 KiB
C++
/*************************************************************************/
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/* rasterizer_gles3.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "rasterizer_gles3.h"
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#include "core/os/os.h"
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#include "core/project_settings.h"
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RasterizerStorage *RasterizerGLES3::get_storage() {
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return storage;
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}
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RasterizerCanvas *RasterizerGLES3::get_canvas() {
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return canvas;
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}
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RasterizerScene *RasterizerGLES3::get_scene() {
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return scene;
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}
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#define _EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB 0x8242
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#define _EXT_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB 0x8243
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#define _EXT_DEBUG_CALLBACK_FUNCTION_ARB 0x8244
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#define _EXT_DEBUG_CALLBACK_USER_PARAM_ARB 0x8245
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#define _EXT_DEBUG_SOURCE_API_ARB 0x8246
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#define _EXT_DEBUG_SOURCE_WINDOW_SYSTEM_ARB 0x8247
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#define _EXT_DEBUG_SOURCE_SHADER_COMPILER_ARB 0x8248
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#define _EXT_DEBUG_SOURCE_THIRD_PARTY_ARB 0x8249
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#define _EXT_DEBUG_SOURCE_APPLICATION_ARB 0x824A
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#define _EXT_DEBUG_SOURCE_OTHER_ARB 0x824B
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#define _EXT_DEBUG_TYPE_ERROR_ARB 0x824C
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#define _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB 0x824D
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#define _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB 0x824E
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#define _EXT_DEBUG_TYPE_PORTABILITY_ARB 0x824F
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#define _EXT_DEBUG_TYPE_PERFORMANCE_ARB 0x8250
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#define _EXT_DEBUG_TYPE_OTHER_ARB 0x8251
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#define _EXT_MAX_DEBUG_MESSAGE_LENGTH_ARB 0x9143
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#define _EXT_MAX_DEBUG_LOGGED_MESSAGES_ARB 0x9144
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#define _EXT_DEBUG_LOGGED_MESSAGES_ARB 0x9145
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#define _EXT_DEBUG_SEVERITY_HIGH_ARB 0x9146
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#define _EXT_DEBUG_SEVERITY_MEDIUM_ARB 0x9147
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#define _EXT_DEBUG_SEVERITY_LOW_ARB 0x9148
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#define _EXT_DEBUG_OUTPUT 0x92E0
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#if defined(MINGW_ENABLED) || defined(_MSC_VER)
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#define strcpy strcpy_s
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#endif
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#ifdef GLAD_ENABLED
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// Restricting to GLAD as only used in initialize() with GLAD_GL_ARB_debug_output
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static void GLAPIENTRY _gl_debug_print(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const GLvoid *userParam) {
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if (type == _EXT_DEBUG_TYPE_OTHER_ARB) {
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return;
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}
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if (type == _EXT_DEBUG_TYPE_PERFORMANCE_ARB) {
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return; //these are ultimately annoying, so removing for now
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}
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char debSource[256], debType[256], debSev[256];
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if (source == _EXT_DEBUG_SOURCE_API_ARB) {
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strcpy(debSource, "OpenGL");
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} else if (source == _EXT_DEBUG_SOURCE_WINDOW_SYSTEM_ARB) {
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strcpy(debSource, "Windows");
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} else if (source == _EXT_DEBUG_SOURCE_SHADER_COMPILER_ARB) {
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strcpy(debSource, "Shader Compiler");
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} else if (source == _EXT_DEBUG_SOURCE_THIRD_PARTY_ARB) {
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strcpy(debSource, "Third Party");
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} else if (source == _EXT_DEBUG_SOURCE_APPLICATION_ARB) {
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strcpy(debSource, "Application");
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} else if (source == _EXT_DEBUG_SOURCE_OTHER_ARB) {
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strcpy(debSource, "Other");
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}
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if (type == _EXT_DEBUG_TYPE_ERROR_ARB) {
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strcpy(debType, "Error");
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} else if (type == _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB) {
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strcpy(debType, "Deprecated behavior");
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} else if (type == _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB) {
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strcpy(debType, "Undefined behavior");
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} else if (type == _EXT_DEBUG_TYPE_PORTABILITY_ARB) {
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strcpy(debType, "Portability");
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} else if (type == _EXT_DEBUG_TYPE_PERFORMANCE_ARB) {
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strcpy(debType, "Performance");
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}
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if (severity == _EXT_DEBUG_SEVERITY_HIGH_ARB) {
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strcpy(debSev, "High");
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} else if (severity == _EXT_DEBUG_SEVERITY_MEDIUM_ARB) {
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strcpy(debSev, "Medium");
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} else if (severity == _EXT_DEBUG_SEVERITY_LOW_ARB) {
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strcpy(debSev, "Low");
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}
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String output = String() + "GL ERROR: Source: " + debSource + "\tType: " + debType + "\tID: " + itos(id) + "\tSeverity: " + debSev + "\tMessage: " + message;
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ERR_PRINT(output);
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}
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#endif // GLAD_ENABLED
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typedef void (*DEBUGPROCARB)(GLenum source,
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GLenum type,
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GLuint id,
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GLenum severity,
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GLsizei length,
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const char *message,
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const void *userParam);
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typedef void (*DebugMessageCallbackARB)(DEBUGPROCARB callback, const void *userParam);
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Error RasterizerGLES3::is_viable() {
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#ifdef GLAD_ENABLED
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if (!gladLoadGL()) {
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ERR_PRINT("Error initializing GLAD");
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return ERR_UNAVAILABLE;
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}
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// GLVersion seems to be used for both GL and GL ES, so we need different version checks for them
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#ifdef OPENGL_ENABLED // OpenGL 3.3 Core Profile required
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if (GLVersion.major < 3 || (GLVersion.major == 3 && GLVersion.minor < 3)) {
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#else // OpenGL ES 3.0
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if (GLVersion.major < 3) {
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#endif
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return ERR_UNAVAILABLE;
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}
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#endif // GLAD_ENABLED
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return OK;
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}
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void RasterizerGLES3::initialize() {
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print_verbose("Using GLES3 video driver");
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#ifdef GLAD_ENABLED
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if (OS::get_singleton()->is_stdout_verbose()) {
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if (GLAD_GL_ARB_debug_output) {
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glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
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glDebugMessageCallbackARB(_gl_debug_print, nullptr);
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glEnable(_EXT_DEBUG_OUTPUT);
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} else {
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print_line("OpenGL debugging not supported!");
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}
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}
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#endif // GLAD_ENABLED
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/* // For debugging
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if (GLAD_GL_ARB_debug_output) {
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glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_ERROR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
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glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
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glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
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glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_PORTABILITY_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
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glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_PERFORMANCE_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
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glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_OTHER_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
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glDebugMessageInsertARB(
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GL_DEBUG_SOURCE_API_ARB,
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GL_DEBUG_TYPE_OTHER_ARB, 1,
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GL_DEBUG_SEVERITY_HIGH_ARB,5, "hello");
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}
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*/
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print_line("OpenGL ES 3.0 Renderer: " + VisualServer::get_singleton()->get_video_adapter_name());
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storage->initialize();
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canvas->initialize();
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scene->initialize();
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}
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void RasterizerGLES3::begin_frame(double frame_step) {
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time_total += frame_step * time_scale;
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if (frame_step == 0) {
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//to avoid hiccups
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frame_step = 0.001;
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}
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double time_roll_over = GLOBAL_GET("rendering/limits/time/time_rollover_secs");
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time_total = Math::fmod(time_total, time_roll_over);
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storage->frame.time[0] = time_total;
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storage->frame.time[1] = Math::fmod(time_total, 3600);
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storage->frame.time[2] = Math::fmod(time_total, 900);
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storage->frame.time[3] = Math::fmod(time_total, 60);
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storage->frame.count++;
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storage->frame.delta = frame_step;
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storage->update_dirty_resources();
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storage->info.render_final = storage->info.render;
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storage->info.render.reset();
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scene->iteration();
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}
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void RasterizerGLES3::set_current_render_target(RID p_render_target) {
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if (!p_render_target.is_valid() && storage->frame.current_rt && storage->frame.clear_request) {
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//handle pending clear request, if the framebuffer was not cleared
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glBindFramebuffer(GL_FRAMEBUFFER, storage->frame.current_rt->fbo);
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glClearColor(
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storage->frame.clear_request_color.r,
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storage->frame.clear_request_color.g,
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storage->frame.clear_request_color.b,
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storage->frame.clear_request_color.a);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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if (p_render_target.is_valid()) {
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RasterizerStorageGLES3::RenderTarget *rt = storage->render_target_owner.getornull(p_render_target);
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storage->frame.current_rt = rt;
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ERR_FAIL_COND(!rt);
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storage->frame.clear_request = false;
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glViewport(0, 0, rt->width, rt->height);
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} else {
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storage->frame.current_rt = nullptr;
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storage->frame.clear_request = false;
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glViewport(0, 0, OS::get_singleton()->get_window_size().width, OS::get_singleton()->get_window_size().height);
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glBindFramebuffer(GL_FRAMEBUFFER, RasterizerStorageGLES3::system_fbo);
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}
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}
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void RasterizerGLES3::restore_render_target(bool p_3d_was_drawn) {
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ERR_FAIL_COND(storage->frame.current_rt == nullptr);
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RasterizerStorageGLES3::RenderTarget *rt = storage->frame.current_rt;
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if (p_3d_was_drawn && rt->external.fbo != 0) {
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// our external render buffer is now leading, render 2d into that.
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glBindFramebuffer(GL_FRAMEBUFFER, rt->external.fbo);
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} else {
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glBindFramebuffer(GL_FRAMEBUFFER, rt->fbo);
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}
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glViewport(0, 0, rt->width, rt->height);
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}
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void RasterizerGLES3::clear_render_target(const Color &p_color) {
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ERR_FAIL_COND(!storage->frame.current_rt);
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storage->frame.clear_request = true;
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storage->frame.clear_request_color = p_color;
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}
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void RasterizerGLES3::set_boot_image(const Ref<Image> &p_image, const Color &p_color, bool p_scale, bool p_use_filter) {
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if (p_image.is_null() || p_image->empty()) {
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return;
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}
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begin_frame(0.0);
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int window_w = OS::get_singleton()->get_video_mode(0).width;
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int window_h = OS::get_singleton()->get_video_mode(0).height;
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glBindFramebuffer(GL_FRAMEBUFFER, RasterizerStorageGLES3::system_fbo);
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glViewport(0, 0, window_w, window_h);
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glDisable(GL_BLEND);
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glDepthMask(GL_FALSE);
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if (OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
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glClearColor(0.0, 0.0, 0.0, 0.0);
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} else {
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glClearColor(p_color.r, p_color.g, p_color.b, 1.0);
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}
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glClear(GL_COLOR_BUFFER_BIT);
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canvas->canvas_begin();
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RID texture = storage->texture_create();
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storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), VS::TEXTURE_TYPE_2D, p_use_filter ? (uint32_t)VS::TEXTURE_FLAG_FILTER : 0);
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storage->texture_set_data(texture, p_image);
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Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height());
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Rect2 screenrect;
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if (p_scale) {
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if (window_w > window_h) {
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//scale horizontally
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screenrect.size.y = window_h;
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screenrect.size.x = imgrect.size.x * window_h / imgrect.size.y;
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screenrect.position.x = (window_w - screenrect.size.x) / 2;
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} else {
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//scale vertically
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screenrect.size.x = window_w;
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screenrect.size.y = imgrect.size.y * window_w / imgrect.size.x;
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screenrect.position.y = (window_h - screenrect.size.y) / 2;
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}
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} else {
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screenrect = imgrect;
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screenrect.position += ((Size2(window_w, window_h) - screenrect.size) / 2.0).floor();
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}
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RasterizerStorageGLES3::Texture *t = storage->texture_owner.get(texture);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, t->tex_id);
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canvas->draw_generic_textured_rect(screenrect, Rect2(0, 0, 1, 1));
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glBindTexture(GL_TEXTURE_2D, 0);
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canvas->canvas_end();
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storage->free(texture); // free since it's only one frame that stays there
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end_frame(true);
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}
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void RasterizerGLES3::set_shader_time_scale(float p_scale) {
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time_scale = p_scale;
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}
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void RasterizerGLES3::blit_render_target_to_screen(RID p_render_target, const Rect2 &p_screen_rect, int p_screen) {
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ERR_FAIL_COND(storage->frame.current_rt);
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RasterizerStorageGLES3::RenderTarget *rt = storage->render_target_owner.getornull(p_render_target);
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ERR_FAIL_COND(!rt);
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if (rt->flags[RasterizerStorage::RENDER_TARGET_KEEP_3D_LINEAR]) {
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// We need to add an sRGB conversion here as we kept our buffer linear (+ a little tone mapping).
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canvas->_set_texture_rect_mode(true);
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canvas->state.canvas_shader.set_custom_shader(0);
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canvas->state.canvas_shader.set_conditional(CanvasShaderGLES3::LINEAR_TO_SRGB, true);
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canvas->state.canvas_shader.bind();
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canvas->canvas_begin();
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glDisable(GL_BLEND);
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// render to our framebuffer
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glBindFramebuffer(GL_FRAMEBUFFER, RasterizerStorageGLES3::system_fbo);
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// output our texture
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glActiveTexture(GL_TEXTURE0);
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if (rt->external.fbo != 0) {
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glBindTexture(GL_TEXTURE_2D, rt->external.color);
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} else {
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glBindTexture(GL_TEXTURE_2D, rt->color);
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}
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canvas->draw_generic_textured_rect(p_screen_rect, Rect2(0, 0, 1, -1));
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glBindTexture(GL_TEXTURE_2D, 0);
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canvas->canvas_end();
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canvas->state.canvas_shader.set_conditional(CanvasShaderGLES3::LINEAR_TO_SRGB, false);
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} else {
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// No conversion needed, take the faster approach
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Size2 win_size = OS::get_singleton()->get_window_size();
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if (rt->external.fbo != 0) {
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glBindFramebuffer(GL_READ_FRAMEBUFFER, rt->external.fbo);
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} else {
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glBindFramebuffer(GL_READ_FRAMEBUFFER, rt->fbo);
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}
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glReadBuffer(GL_COLOR_ATTACHMENT0);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, RasterizerStorageGLES3::system_fbo);
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glBlitFramebuffer(0, 0, rt->width, rt->height, p_screen_rect.position.x, win_size.height - p_screen_rect.position.y - p_screen_rect.size.height, p_screen_rect.position.x + p_screen_rect.size.width, win_size.height - p_screen_rect.position.y, GL_COLOR_BUFFER_BIT, GL_NEAREST);
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}
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}
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void RasterizerGLES3::output_lens_distorted_to_screen(RID p_render_target, const Rect2 &p_screen_rect, float p_k1, float p_k2, const Vector2 &p_eye_center, float p_oversample) {
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ERR_FAIL_COND(storage->frame.current_rt);
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RasterizerStorageGLES3::RenderTarget *rt = storage->render_target_owner.getornull(p_render_target);
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ERR_FAIL_COND(!rt);
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glDisable(GL_BLEND);
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// render to our framebuffer
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glBindFramebuffer(GL_FRAMEBUFFER, RasterizerStorageGLES3::system_fbo);
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// output our texture
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, rt->color);
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canvas->draw_lens_distortion_rect(p_screen_rect, p_k1, p_k2, p_eye_center, p_oversample);
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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void RasterizerGLES3::end_frame(bool p_swap_buffers) {
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if (OS::get_singleton()->is_layered_allowed()) {
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if (!OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
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//clear alpha
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glColorMask(false, false, false, true);
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glClearColor(0, 0, 0, 1);
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glClear(GL_COLOR_BUFFER_BIT);
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glColorMask(true, true, true, true);
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}
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}
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if (p_swap_buffers) {
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OS::get_singleton()->swap_buffers();
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} else {
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glFinish();
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}
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}
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void RasterizerGLES3::finalize() {
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storage->finalize();
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canvas->finalize();
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}
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Rasterizer *RasterizerGLES3::_create_current() {
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return memnew(RasterizerGLES3);
|
|
}
|
|
|
|
void RasterizerGLES3::make_current() {
|
|
_create_func = _create_current;
|
|
}
|
|
|
|
void RasterizerGLES3::register_config() {
|
|
}
|
|
|
|
bool RasterizerGLES3::gl_check_errors() {
|
|
bool error_found = false;
|
|
GLenum error = glGetError();
|
|
while (error != GL_NO_ERROR) {
|
|
switch (error) {
|
|
#ifdef DEBUG_ENABLED
|
|
case GL_INVALID_ENUM: {
|
|
WARN_PRINT("GL_INVALID_ENUM: An unacceptable value is specified for an enumerated argument.");
|
|
} break;
|
|
case GL_INVALID_VALUE: {
|
|
WARN_PRINT("GL_INVALID_VALUE: A numeric argument is out of range.");
|
|
} break;
|
|
case GL_INVALID_OPERATION: {
|
|
WARN_PRINT("GL_INVALID_OPERATION: The specified operation is not allowed in the current state.");
|
|
} break;
|
|
case GL_INVALID_FRAMEBUFFER_OPERATION: {
|
|
WARN_PRINT("GL_INVALID_FRAMEBUFFER_OPERATION: The framebuffer object is not complete.");
|
|
} break;
|
|
#endif // DEBUG_ENABLED
|
|
case GL_OUT_OF_MEMORY: {
|
|
ERR_PRINT("GL_OUT_OF_MEMORY: There is not enough memory left to execute the command. The state of the GL is undefined.");
|
|
} break;
|
|
// GL_STACK_UNDERFLOW and GL_STACK_OVERFLOW are undefined in GLES2/gl2.h, which is used when not using GLAD.
|
|
//case GL_STACK_UNDERFLOW: {
|
|
// ERR_PRINT("GL_STACK_UNDERFLOW: An attempt has been made to perform an operation that would cause an internal stack to underflow.");
|
|
//} break;
|
|
//case GL_STACK_OVERFLOW: {
|
|
// ERR_PRINT("GL_STACK_OVERFLOW: An attempt has been made to perform an operation that would cause an internal stack to overflow.");
|
|
//} break;
|
|
default: {
|
|
#ifdef DEBUG_ENABLED
|
|
ERR_PRINT("Unrecognized GLError");
|
|
#endif // DEBUG_ENABLED
|
|
} break;
|
|
}
|
|
error_found = true;
|
|
error = glGetError();
|
|
}
|
|
|
|
return error_found;
|
|
}
|
|
|
|
RasterizerGLES3::RasterizerGLES3() {
|
|
storage = memnew(RasterizerStorageGLES3);
|
|
canvas = memnew(RasterizerCanvasGLES3);
|
|
scene = memnew(RasterizerSceneGLES3);
|
|
canvas->storage = storage;
|
|
canvas->scene_render = scene;
|
|
storage->canvas = canvas;
|
|
scene->storage = storage;
|
|
storage->scene = scene;
|
|
|
|
time_total = 0;
|
|
time_scale = 1;
|
|
}
|
|
|
|
RasterizerGLES3::~RasterizerGLES3() {
|
|
memdelete(scene);
|
|
memdelete(canvas);
|
|
|
|
// storage must be deleted last,
|
|
// because it contains RID_owners that are used by scene and canvas destructors
|
|
memdelete(storage);
|
|
}
|