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gecko-dev
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gecko-dev/gfx/gl/GLContext.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GLContext.h"
#include <algorithm>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <regex>
#include <string>
#include <vector>
#ifdef MOZ_WIDGET_ANDROID
#include <sys/mman.h>
#endif
#include "GLBlitHelper.h"
#include "GLReadTexImageHelper.h"
#include "GLScreenBuffer.h"
#include "gfxCrashReporterUtils.h"
#include "gfxEnv.h"
#include "gfxUtils.h"
#include "GLContextProvider.h"
#include "GLTextureImage.h"
#include "nsPrintfCString.h"
#include "nsThreadUtils.h"
#include "prenv.h"
#include "prlink.h"
#include "ScopedGLHelpers.h"
#include "SharedSurfaceGL.h"
#include "GfxTexturesReporter.h"
#include "gfx2DGlue.h"
#include "gfxPrefs.h"
#include "mozilla/IntegerPrintfMacros.h"
#include "mozilla/gfx/Logging.h"
#include "OGLShaderProgram.h" // for ShaderProgramType
#include "mozilla/DebugOnly.h"
#ifdef XP_MACOSX
#include <CoreServices/CoreServices.h>
#endif
#if defined(MOZ_WIDGET_COCOA)
#include "nsCocoaFeatures.h"
#endif
#ifdef MOZ_WIDGET_ANDROID
#include "mozilla/jni/Utils.h"
#endif
namespace mozilla {
namespace gl {
using namespace mozilla::gfx;
using namespace mozilla::layers;
MOZ_THREAD_LOCAL(uintptr_t) GLContext::sCurrentContext;
// If adding defines, don't forget to undefine symbols. See #undef block below.
// clang-format off
#define CORE_SYMBOL(x) { (PRFuncPtr*) &mSymbols.f##x, { #x, nullptr } }
#define CORE_EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, { #x, #x #y, #x #z, nullptr } }
#define EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, { #x #y, #x #z, nullptr } }
#define EXT_SYMBOL3(x,y,z,w) { (PRFuncPtr*) &mSymbols.f##x, { #x #y, #x #z, #x #w, nullptr } }
#define END_SYMBOLS { nullptr, { nullptr } }
// clang-format on
// should match the order of GLExtensions, and be null-terminated.
static const char* const sExtensionNames[] = {
"NO_EXTENSION",
"GL_AMD_compressed_ATC_texture",
"GL_ANGLE_depth_texture",
"GL_ANGLE_framebuffer_blit",
"GL_ANGLE_framebuffer_multisample",
"GL_ANGLE_instanced_arrays",
"GL_ANGLE_texture_compression_dxt3",
"GL_ANGLE_texture_compression_dxt5",
"GL_ANGLE_timer_query",
"GL_APPLE_client_storage",
"GL_APPLE_fence",
"GL_APPLE_framebuffer_multisample",
"GL_APPLE_sync",
"GL_APPLE_texture_range",
"GL_APPLE_vertex_array_object",
"GL_ARB_ES2_compatibility",
"GL_ARB_ES3_compatibility",
"GL_ARB_color_buffer_float",
"GL_ARB_compatibility",
"GL_ARB_copy_buffer",
"GL_ARB_depth_texture",
"GL_ARB_draw_buffers",
"GL_ARB_draw_instanced",
"GL_ARB_framebuffer_object",
"GL_ARB_framebuffer_sRGB",
"GL_ARB_geometry_shader4",
"GL_ARB_half_float_pixel",
"GL_ARB_instanced_arrays",
"GL_ARB_internalformat_query",
"GL_ARB_invalidate_subdata",
"GL_ARB_map_buffer_range",
"GL_ARB_occlusion_query2",
"GL_ARB_pixel_buffer_object",
"GL_ARB_robust_buffer_access_behavior",
"GL_ARB_robustness",
"GL_ARB_sampler_objects",
"GL_ARB_seamless_cube_map",
"GL_ARB_shader_texture_lod",
"GL_ARB_sync",
"GL_ARB_texture_compression",
"GL_ARB_texture_compression_bptc",
"GL_ARB_texture_compression_rgtc",
"GL_ARB_texture_float",
"GL_ARB_texture_non_power_of_two",
"GL_ARB_texture_rectangle",
"GL_ARB_texture_rg",
"GL_ARB_texture_storage",
"GL_ARB_texture_swizzle",
"GL_ARB_timer_query",
"GL_ARB_transform_feedback2",
"GL_ARB_uniform_buffer_object",
"GL_ARB_vertex_array_object",
"GL_EXT_bgra",
"GL_EXT_blend_minmax",
"GL_EXT_color_buffer_float",
"GL_EXT_color_buffer_half_float",
"GL_EXT_copy_texture",
"GL_EXT_disjoint_timer_query",
"GL_EXT_draw_buffers",
"GL_EXT_draw_buffers2",
"GL_EXT_draw_instanced",
"GL_EXT_draw_range_elements",
"GL_EXT_frag_depth",
"GL_EXT_framebuffer_blit",
"GL_EXT_framebuffer_multisample",
"GL_EXT_framebuffer_object",
"GL_EXT_framebuffer_sRGB",
"GL_EXT_gpu_shader4",
"GL_EXT_map_buffer_range",
"GL_EXT_multisampled_render_to_texture",
"GL_EXT_occlusion_query_boolean",
"GL_EXT_packed_depth_stencil",
"GL_EXT_read_format_bgra",
"GL_EXT_robustness",
"GL_EXT_sRGB",
"GL_EXT_sRGB_write_control",
"GL_EXT_shader_texture_lod",
"GL_EXT_texture3D",
"GL_EXT_texture_compression_bptc",
"GL_EXT_texture_compression_dxt1",
"GL_EXT_texture_compression_rgtc",
"GL_EXT_texture_compression_s3tc",
"GL_EXT_texture_compression_s3tc_srgb",
"GL_EXT_texture_filter_anisotropic",
"GL_EXT_texture_format_BGRA8888",
"GL_EXT_texture_sRGB",
"GL_EXT_texture_storage",
"GL_EXT_timer_query",
"GL_EXT_transform_feedback",
"GL_EXT_unpack_subimage",
"GL_IMG_read_format",
"GL_IMG_texture_compression_pvrtc",
"GL_IMG_texture_npot",
"GL_KHR_debug",
"GL_KHR_robust_buffer_access_behavior",
"GL_KHR_robustness",
"GL_KHR_texture_compression_astc_hdr",
"GL_KHR_texture_compression_astc_ldr",
"GL_NV_draw_instanced",
"GL_NV_fence",
"GL_NV_framebuffer_blit",
"GL_NV_geometry_program4",
"GL_NV_half_float",
"GL_NV_instanced_arrays",
"GL_NV_primitive_restart",
"GL_NV_texture_barrier",
"GL_NV_transform_feedback",
"GL_NV_transform_feedback2",
"GL_OES_EGL_image",
"GL_OES_EGL_image_external",
"GL_OES_EGL_sync",
"GL_OES_compressed_ETC1_RGB8_texture",
"GL_OES_depth24",
"GL_OES_depth32",
"GL_OES_depth_texture",
"GL_OES_element_index_uint",
"GL_OES_framebuffer_object",
"GL_OES_packed_depth_stencil",
"GL_OES_rgb8_rgba8",
"GL_OES_standard_derivatives",
"GL_OES_stencil8",
"GL_OES_texture_3D",
"GL_OES_texture_float",
"GL_OES_texture_float_linear",
"GL_OES_texture_half_float",
"GL_OES_texture_half_float_linear",
"GL_OES_texture_npot",
"GL_OES_vertex_array_object"};
static bool ShouldUseTLSIsCurrent(bool useTLSIsCurrent) {
if (gfxPrefs::UseTLSIsCurrent() == 0) return useTLSIsCurrent;
return gfxPrefs::UseTLSIsCurrent() > 0;
}
static bool ParseVersion(const std::string& versionStr,
uint32_t* const out_major, uint32_t* const out_minor) {
static const std::regex kVersionRegex("([0-9]+)\\.([0-9]+)");
std::smatch match;
if (!std::regex_search(versionStr, match, kVersionRegex)) return false;
const auto& majorStr = match.str(1);
const auto& minorStr = match.str(2);
*out_major = atoi(majorStr.c_str());
*out_minor = atoi(minorStr.c_str());
return true;
}
/*static*/ uint8_t GLContext::ChooseDebugFlags(
const CreateContextFlags createFlags) {
uint8_t debugFlags = 0;
#ifdef MOZ_GL_DEBUG
if (gfxEnv::GlDebug()) {
debugFlags |= GLContext::DebugFlagEnabled;
}
// Enables extra verbose output, informing of the start and finish of every GL
// call. Useful e.g. to record information to investigate graphics system
// crashes/lockups
if (gfxEnv::GlDebugVerbose()) {
debugFlags |= GLContext::DebugFlagTrace;
}
// Aborts on GL error. Can be useful to debug quicker code that is known not
// to generate any GL error in principle.
bool abortOnError = false;
if (createFlags & CreateContextFlags::NO_VALIDATION) {
abortOnError = true;
const auto fnStringsMatch = [](const char* a, const char* b) {
return strcmp(a, b) == 0;
};
const char* envAbortOnError = PR_GetEnv("MOZ_GL_DEBUG_ABORT_ON_ERROR");
if (envAbortOnError && fnStringsMatch(envAbortOnError, "0")) {
abortOnError = false;
}
}
if (abortOnError) {
debugFlags |= GLContext::DebugFlagAbortOnError;
}
#endif
return debugFlags;
}
GLContext::GLContext(CreateContextFlags flags, const SurfaceCaps& caps,
GLContext* sharedContext, bool isOffscreen,
bool useTLSIsCurrent)
: mUseTLSIsCurrent(ShouldUseTLSIsCurrent(useTLSIsCurrent)),
mIsOffscreen(isOffscreen),
mDebugFlags(ChooseDebugFlags(flags)),
mSharedContext(sharedContext),
mCaps(caps),
mWorkAroundDriverBugs(gfxPrefs::WorkAroundDriverBugs()) {
mOwningThreadId = PlatformThread::CurrentId();
MOZ_ALWAYS_TRUE(sCurrentContext.init());
sCurrentContext.set(0);
}
GLContext::~GLContext() {
NS_ASSERTION(
IsDestroyed(),
"GLContext implementation must call MarkDestroyed in destructor!");
#ifdef MOZ_GL_DEBUG
if (mSharedContext) {
GLContext* tip = mSharedContext;
while (tip->mSharedContext) tip = tip->mSharedContext;
tip->SharedContextDestroyed(this);
tip->ReportOutstandingNames();
} else {
ReportOutstandingNames();
}
#endif
}
/*static*/ void GLContext::StaticDebugCallback(GLenum source, GLenum type,
GLuint id, GLenum severity,
GLsizei length,
const GLchar* message,
const GLvoid* userParam) {
GLContext* gl = (GLContext*)userParam;
gl->DebugCallback(source, type, id, severity, length, message);
}
static void ClearSymbols(const GLLibraryLoader::SymLoadStruct* symbols) {
while (symbols->symPointer) {
*symbols->symPointer = nullptr;
symbols++;
}
}
bool GLContext::InitWithPrefix(const char* prefix, bool trygl) {
MOZ_RELEASE_ASSERT(!mSymbols.fBindFramebuffer,
"GFX: InitWithPrefix should only be called once.");
ScopedGfxFeatureReporter reporter("GL Context");
if (!InitWithPrefixImpl(prefix, trygl)) {
// If initialization fails, zero the symbols to avoid hard-to-understand
// bugs.
mSymbols = {};
NS_WARNING("GLContext::InitWithPrefix failed!");
return false;
}
reporter.SetSuccessful();
return true;
}
static bool LoadGLSymbols(GLContext* gl, const char* prefix, bool trygl,
const GLLibraryLoader::SymLoadStruct* list,
const char* desc) {
if (gl->LoadSymbols(list, trygl, prefix)) return true;
ClearSymbols(list);
if (desc) {
const nsPrintfCString err("Failed to load symbols for %s.", desc);
NS_ERROR(err.BeginReading());
}
return false;
}
bool GLContext::LoadExtSymbols(const char* prefix, bool trygl,
const SymLoadStruct* list, GLExtensions ext) {
const char* extName = sExtensionNames[size_t(ext)];
if (!LoadGLSymbols(this, prefix, trygl, list, extName)) {
MarkExtensionUnsupported(ext);
return false;
}
return true;
};
bool GLContext::LoadFeatureSymbols(const char* prefix, bool trygl,
const SymLoadStruct* list,
GLFeature feature) {
const char* featureName = GetFeatureName(feature);
if (!LoadGLSymbols(this, prefix, trygl, list, featureName)) {
MarkUnsupported(feature);
return false;
}
return true;
};
bool GLContext::InitWithPrefixImpl(const char* prefix, bool trygl) {
if (!MakeCurrent(true)) return false;
// clang-format off
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fActiveTexture, { "ActiveTexture", "ActiveTextureARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fAttachShader, { "AttachShader", "AttachShaderARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindAttribLocation, { "BindAttribLocation", "BindAttribLocationARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindBuffer, { "BindBuffer", "BindBufferARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindTexture, { "BindTexture", "BindTextureARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBlendColor, { "BlendColor", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBlendEquation, { "BlendEquation", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, { "BlendEquationSeparate", "BlendEquationSeparateEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBlendFunc, { "BlendFunc", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, { "BlendFuncSeparate", "BlendFuncSeparateEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBufferData, { "BufferData", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBufferSubData, { "BufferSubData", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClear, { "Clear", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClearColor, { "ClearColor", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClearStencil, { "ClearStencil", nullptr } },
{ (PRFuncPtr*) &mSymbols.fColorMask, { "ColorMask", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage2D, {"CompressedTexImage2D", nullptr} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage2D, {"CompressedTexSubImage2D", nullptr} },
{ (PRFuncPtr*) &mSymbols.fCullFace, { "CullFace", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDetachShader, { "DetachShader", "DetachShaderARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDepthFunc, { "DepthFunc", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDepthMask, { "DepthMask", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDisable, { "Disable", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, { "DisableVertexAttribArray", "DisableVertexAttribArrayARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDrawArrays, { "DrawArrays", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDrawElements, { "DrawElements", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEnable, { "Enable", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, { "EnableVertexAttribArray", "EnableVertexAttribArrayARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFinish, { "Finish", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFlush, { "Flush", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFrontFace, { "FrontFace", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetActiveAttrib, { "GetActiveAttrib", "GetActiveAttribARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniform, { "GetActiveUniform", "GetActiveUniformARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetAttachedShaders, { "GetAttachedShaders", "GetAttachedShadersARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetAttribLocation, { "GetAttribLocation", "GetAttribLocationARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetIntegerv, { "GetIntegerv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetFloatv, { "GetFloatv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetBooleanv, { "GetBooleanv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, { "GetBufferParameteriv", "GetBufferParameterivARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetError, { "GetError", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetProgramiv, { "GetProgramiv", "GetProgramivARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, { "GetProgramInfoLog", "GetProgramInfoLogARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexParameteri, { "TexParameteri", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexParameteriv, { "TexParameteriv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexParameterf, { "TexParameterf", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetString, { "GetString", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetTexParameterfv, { "GetTexParameterfv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetTexParameteriv, { "GetTexParameteriv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetUniformfv, { "GetUniformfv", "GetUniformfvARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetUniformiv, { "GetUniformiv", "GetUniformivARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetUniformLocation, { "GetUniformLocation", "GetUniformLocationARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, { "GetVertexAttribfv", "GetVertexAttribfvARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, { "GetVertexAttribiv", "GetVertexAttribivARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribPointerv, { "GetVertexAttribPointerv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fHint, { "Hint", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsBuffer, { "IsBuffer", "IsBufferARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsEnabled, { "IsEnabled", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsProgram, { "IsProgram", "IsProgramARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsShader, { "IsShader", "IsShaderARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsTexture, { "IsTexture", "IsTextureARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fLineWidth, { "LineWidth", nullptr } },
{ (PRFuncPtr*) &mSymbols.fLinkProgram, { "LinkProgram", "LinkProgramARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPixelStorei, { "PixelStorei", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPolygonOffset, { "PolygonOffset", nullptr } },
{ (PRFuncPtr*) &mSymbols.fReadPixels, { "ReadPixels", nullptr } },
{ (PRFuncPtr*) &mSymbols.fSampleCoverage, { "SampleCoverage", nullptr } },
{ (PRFuncPtr*) &mSymbols.fScissor, { "Scissor", nullptr } },
{ (PRFuncPtr*) &mSymbols.fStencilFunc, { "StencilFunc", nullptr } },
{ (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, { "StencilFuncSeparate", "StencilFuncSeparateEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fStencilMask, { "StencilMask", nullptr } },
{ (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, { "StencilMaskSeparate", "StencilMaskSeparateEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fStencilOp, { "StencilOp", nullptr } },
{ (PRFuncPtr*) &mSymbols.fStencilOpSeparate, { "StencilOpSeparate", "StencilOpSeparateEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexImage2D, { "TexImage2D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexSubImage2D, { "TexSubImage2D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform1f, { "Uniform1f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform1fv, { "Uniform1fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform1i, { "Uniform1i", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform1iv, { "Uniform1iv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform2f, { "Uniform2f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform2fv, { "Uniform2fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform2i, { "Uniform2i", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform2iv, { "Uniform2iv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform3f, { "Uniform3f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform3fv, { "Uniform3fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform3i, { "Uniform3i", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform3iv, { "Uniform3iv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform4f, { "Uniform4f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform4fv, { "Uniform4fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform4i, { "Uniform4i", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform4iv, { "Uniform4iv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, { "UniformMatrix2fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, { "UniformMatrix3fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, { "UniformMatrix4fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUseProgram, { "UseProgram", nullptr } },
{ (PRFuncPtr*) &mSymbols.fValidateProgram, { "ValidateProgram", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1f, { "VertexAttrib1f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2f, { "VertexAttrib2f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3f, { "VertexAttrib3f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4f, { "VertexAttrib4f", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, { "VertexAttrib1fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, { "VertexAttrib2fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, { "VertexAttrib3fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, { "VertexAttrib4fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fViewport, { "Viewport", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCompileShader, { "CompileShader", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCopyTexImage2D, { "CopyTexImage2D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, { "CopyTexSubImage2D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetShaderiv, { "GetShaderiv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, { "GetShaderInfoLog", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetShaderSource, { "GetShaderSource", nullptr } },
{ (PRFuncPtr*) &mSymbols.fShaderSource, { "ShaderSource", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenBuffers, { "GenBuffers", "GenBuffersARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenTextures, { "GenTextures", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCreateProgram, { "CreateProgram", "CreateProgramARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCreateShader, { "CreateShader", "CreateShaderARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteBuffers, { "DeleteBuffers", "DeleteBuffersARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteTextures, { "DeleteTextures", "DeleteTexturesARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteProgram, { "DeleteProgram", "DeleteProgramARB", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteShader, { "DeleteShader", "DeleteShaderARB", nullptr } },
END_SYMBOLS
};
// clang-format on
if (!LoadGLSymbols(this, prefix, trygl, coreSymbols, "GL")) return false;
{
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fGetGraphicsResetStatus,
{"GetGraphicsResetStatus", "GetGraphicsResetStatusARB",
"GetGraphicsResetStatusKHR", "GetGraphicsResetStatusEXT", nullptr}},
END_SYMBOLS};
(void)LoadGLSymbols(this, prefix, trygl, symbols, nullptr);
auto err = fGetError();
if (err == LOCAL_GL_CONTEXT_LOST) {
MOZ_ASSERT(mSymbols.fGetGraphicsResetStatus);
const auto status = fGetGraphicsResetStatus();
if (status) {
printf_stderr("Unflushed glGetGraphicsResetStatus: 0x%04x\n", status);
}
err = fGetError();
MOZ_ASSERT(!err);
}
if (err) {
MOZ_ASSERT(false);
return false;
}
}
////////////////
const std::string versionStr = (const char*)fGetString(LOCAL_GL_VERSION);
if (versionStr.find("OpenGL ES") == 0) {
mProfile = ContextProfile::OpenGLES;
}
uint32_t majorVer, minorVer;
if (!ParseVersion(versionStr, &majorVer, &minorVer)) {
MOZ_ASSERT(false, "Failed to parse GL_VERSION");
return false;
}
MOZ_ASSERT(majorVer < 10);
MOZ_ASSERT(minorVer < 10);
mVersion = majorVer * 100 + minorVer * 10;
if (mVersion < 200) return false;
////
const auto glslVersionStr =
(const char*)fGetString(LOCAL_GL_SHADING_LANGUAGE_VERSION);
if (!glslVersionStr) {
// This happens on the Android emulators. We'll just return 100
mShadingLanguageVersion = 100;
} else if (ParseVersion(glslVersionStr, &majorVer, &minorVer)) {
MOZ_ASSERT(majorVer < 10);
MOZ_ASSERT(minorVer < 100);
mShadingLanguageVersion = majorVer * 100 + minorVer;
} else {
MOZ_ASSERT(false, "Failed to parse GL_SHADING_LANGUAGE_VERSION");
return false;
}
if (ShouldSpew()) {
printf_stderr("GL version detected: %u\n", mVersion);
printf_stderr("GLSL version detected: %u\n", mShadingLanguageVersion);
printf_stderr("OpenGL vendor: %s\n", fGetString(LOCAL_GL_VENDOR));
printf_stderr("OpenGL renderer: %s\n", fGetString(LOCAL_GL_RENDERER));
}
////////////////
// Load OpenGL ES 2.0 symbols, or desktop if we aren't using ES 2.
if (mProfile == ContextProfile::OpenGLES) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(GetShaderPrecisionFormat),
CORE_SYMBOL(ClearDepthf),
CORE_SYMBOL(DepthRangef), END_SYMBOLS};
if (!LoadGLSymbols(this, prefix, trygl, symbols, "OpenGL ES")) return false;
} else {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(ClearDepth), CORE_SYMBOL(DepthRange),
CORE_SYMBOL(ReadBuffer), CORE_SYMBOL(MapBuffer),
CORE_SYMBOL(UnmapBuffer), CORE_SYMBOL(PointParameterf),
CORE_SYMBOL(DrawBuffer),
// The following functions are only used by Skia/GL in desktop mode.
// Other parts of Gecko should avoid using these
CORE_SYMBOL(DrawBuffers), CORE_SYMBOL(ClientActiveTexture),
CORE_SYMBOL(DisableClientState), CORE_SYMBOL(EnableClientState),
CORE_SYMBOL(LoadIdentity), CORE_SYMBOL(LoadMatrixf),
CORE_SYMBOL(MatrixMode), CORE_SYMBOL(PolygonMode), CORE_SYMBOL(TexGeni),
CORE_SYMBOL(TexGenf), CORE_SYMBOL(TexGenfv), CORE_SYMBOL(VertexPointer),
END_SYMBOLS};
if (!LoadGLSymbols(this, prefix, trygl, symbols, "Desktop OpenGL"))
return false;
}
////////////////
const char* glVendorString = (const char*)fGetString(LOCAL_GL_VENDOR);
const char* glRendererString = (const char*)fGetString(LOCAL_GL_RENDERER);
if (!glVendorString || !glRendererString) return false;
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for vendor IDs.
const char* vendorMatchStrings[size_t(GLVendor::Other) + 1] = {
"Intel", "NVIDIA", "ATI", "Qualcomm", "Imagination",
"nouveau", "Vivante", "VMware, Inc.", "ARM", "Unknown"};
mVendor = GLVendor::Other;
for (size_t i = 0; i < size_t(GLVendor::Other); ++i) {
if (DoesStringMatch(glVendorString, vendorMatchStrings[i])) {
mVendor = GLVendor(i);
break;
}
}
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for renderer IDs.
const char* rendererMatchStrings[size_t(GLRenderer::Other) + 1] = {
"Adreno 200",
"Adreno 205",
"Adreno (TM) 200",
"Adreno (TM) 205",
"Adreno (TM) 305",
"Adreno (TM) 320",
"Adreno (TM) 330",
"Adreno (TM) 420",
"Mali-400 MP",
"Mali-450 MP",
"PowerVR SGX 530",
"PowerVR SGX 540",
"PowerVR SGX 544MP",
"NVIDIA Tegra",
"Android Emulator",
"Gallium 0.4 on llvmpipe",
"Intel HD Graphics 3000 OpenGL Engine",
"Microsoft Basic Render Driver",
"Unknown"};
mRenderer = GLRenderer::Other;
for (size_t i = 0; i < size_t(GLRenderer::Other); ++i) {
if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) {
mRenderer = GLRenderer(i);
break;
}
}
if (ShouldSpew()) {
printf_stderr("GL_VENDOR: %s\n", glVendorString);
printf_stderr("mVendor: %s\n", vendorMatchStrings[size_t(mVendor)]);
printf_stderr("GL_RENDERER: %s\n", glRendererString);
printf_stderr("mRenderer: %s\n", rendererMatchStrings[size_t(mRenderer)]);
}
////////////////
if (mVersion >= 300) { // Both GL3 and ES3.
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fGetStringi, {"GetStringi", nullptr}},
END_SYMBOLS};
if (!LoadGLSymbols(this, prefix, trygl, symbols, "GetStringi")) {
MOZ_RELEASE_ASSERT(false, "GFX: GetStringi is required!");
return false;
}
}
InitExtensions();
if (mProfile != ContextProfile::OpenGLES) {
if (mVersion >= 310 && !IsExtensionSupported(ARB_compatibility)) {
mProfile = ContextProfile::OpenGLCore;
} else {
mProfile = ContextProfile::OpenGLCompatibility;
}
}
MOZ_ASSERT(mProfile != ContextProfile::Unknown);
if (ShouldSpew()) {
const char* profileStr = "";
if (mProfile == ContextProfile::OpenGLES) {
profileStr = " es";
} else if (mProfile == ContextProfile::OpenGLCore) {
profileStr = " core";
}
printf_stderr("Detected profile: %u%s\n", mVersion, profileStr);
}
InitFeatures();
////
// Disable extensions with partial or incorrect support.
if (WorkAroundDriverBugs()) {
if (Renderer() == GLRenderer::AdrenoTM320) {
MarkUnsupported(GLFeature::standard_derivatives);
}
if (Vendor() == GLVendor::Vivante) {
// bug 958256
MarkUnsupported(GLFeature::standard_derivatives);
}
if (Renderer() == GLRenderer::MicrosoftBasicRenderDriver) {
// Bug 978966: on Microsoft's "Basic Render Driver" (software renderer)
// multisampling hardcodes blending with the default blendfunc, which
// breaks WebGL.
MarkUnsupported(GLFeature::framebuffer_multisample);
}
#ifdef XP_MACOSX
// The Mac Nvidia driver, for versions up to and including 10.8,
// don't seem to properly support this. See 814839
// this has been fixed in Mac OS X 10.9. See 907946
// and it also works in 10.8.3 and higher. See 1094338.
if (Vendor() == gl::GLVendor::NVIDIA &&
!nsCocoaFeatures::IsAtLeastVersion(10, 8, 3)) {
MarkUnsupported(GLFeature::depth_texture);
}
#endif
const auto versionStr = (const char*)fGetString(LOCAL_GL_VERSION);
if (strstr(versionStr, "Mesa")) {
// DrawElementsInstanced hangs the driver.
MarkUnsupported(GLFeature::robust_buffer_access_behavior);
}
}
if (IsExtensionSupported(GLContext::ARB_pixel_buffer_object)) {
MOZ_ASSERT(
(mSymbols.fMapBuffer && mSymbols.fUnmapBuffer),
"ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer"
" being available!");
}
////////////////////////////////////////////////////////////////////////////
const auto fnLoadForFeature = [this, prefix, trygl](const SymLoadStruct* list,
GLFeature feature) {
return this->LoadFeatureSymbols(prefix, trygl, list, feature);
};
// Check for ARB_framebuffer_objects
if (IsSupported(GLFeature::framebuffer_object)) {
// https://www.opengl.org/registry/specs/ARB/framebuffer_object.txt
const SymLoadStruct symbols[] = {
CORE_SYMBOL(IsRenderbuffer),
CORE_SYMBOL(BindRenderbuffer),
CORE_SYMBOL(DeleteRenderbuffers),
CORE_SYMBOL(GenRenderbuffers),
CORE_SYMBOL(RenderbufferStorage),
CORE_SYMBOL(RenderbufferStorageMultisample),
CORE_SYMBOL(GetRenderbufferParameteriv),
CORE_SYMBOL(IsFramebuffer),
CORE_SYMBOL(BindFramebuffer),
CORE_SYMBOL(DeleteFramebuffers),
CORE_SYMBOL(GenFramebuffers),
CORE_SYMBOL(CheckFramebufferStatus),
CORE_SYMBOL(FramebufferTexture2D),
CORE_SYMBOL(FramebufferTextureLayer),
CORE_SYMBOL(FramebufferRenderbuffer),
CORE_SYMBOL(GetFramebufferAttachmentParameteriv),
CORE_SYMBOL(BlitFramebuffer),
CORE_SYMBOL(GenerateMipmap),
END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_object);
}
if (!IsSupported(GLFeature::framebuffer_object)) {
// Check for aux symbols based on extensions
if (IsSupported(GLFeature::framebuffer_object_EXT_OES)) {
const SymLoadStruct symbols[] = {
CORE_EXT_SYMBOL2(IsRenderbuffer, EXT, OES),
CORE_EXT_SYMBOL2(BindRenderbuffer, EXT, OES),
CORE_EXT_SYMBOL2(DeleteRenderbuffers, EXT, OES),
CORE_EXT_SYMBOL2(GenRenderbuffers, EXT, OES),
CORE_EXT_SYMBOL2(RenderbufferStorage, EXT, OES),
CORE_EXT_SYMBOL2(GetRenderbufferParameteriv, EXT, OES),
CORE_EXT_SYMBOL2(IsFramebuffer, EXT, OES),
CORE_EXT_SYMBOL2(BindFramebuffer, EXT, OES),
CORE_EXT_SYMBOL2(DeleteFramebuffers, EXT, OES),
CORE_EXT_SYMBOL2(GenFramebuffers, EXT, OES),
CORE_EXT_SYMBOL2(CheckFramebufferStatus, EXT, OES),
CORE_EXT_SYMBOL2(FramebufferTexture2D, EXT, OES),
CORE_EXT_SYMBOL2(FramebufferRenderbuffer, EXT, OES),
CORE_EXT_SYMBOL2(GetFramebufferAttachmentParameteriv, EXT, OES),
CORE_EXT_SYMBOL2(GenerateMipmap, EXT, OES),
END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_object_EXT_OES);
}
if (IsSupported(GLFeature::framebuffer_blit)) {
const SymLoadStruct symbols[] = {
EXT_SYMBOL3(BlitFramebuffer, ANGLE, EXT, NV), END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_blit);
}
if (IsSupported(GLFeature::framebuffer_multisample)) {
const SymLoadStruct symbols[] = {
EXT_SYMBOL3(RenderbufferStorageMultisample, ANGLE, APPLE, EXT),
END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_multisample);
}
if (IsExtensionSupported(GLContext::ARB_geometry_shader4) ||
IsExtensionSupported(GLContext::NV_geometry_program4)) {
const SymLoadStruct symbols[] = {
EXT_SYMBOL2(FramebufferTextureLayer, ARB, EXT), END_SYMBOLS};
if (!LoadGLSymbols(this, prefix, trygl, symbols,
"ARB_geometry_shader4/NV_geometry_program4")) {
MarkExtensionUnsupported(GLContext::ARB_geometry_shader4);
MarkExtensionUnsupported(GLContext::NV_geometry_program4);
}
}
}
if (!IsSupported(GLFeature::framebuffer_object) &&
!IsSupported(GLFeature::framebuffer_object_EXT_OES)) {
NS_ERROR("GLContext requires support for framebuffer objects.");
return false;
}
MOZ_RELEASE_ASSERT(mSymbols.fBindFramebuffer,
"GFX: mSymbols.fBindFramebuffer zero or not set.");
////////////////
const auto err = fGetError();
MOZ_RELEASE_ASSERT(!IsBadCallError(err));
if (err) return false;
LoadMoreSymbols(prefix, trygl);
////////////////////////////////////////////////////////////////////////////
raw_fGetIntegerv(LOCAL_GL_VIEWPORT, mViewportRect);
raw_fGetIntegerv(LOCAL_GL_SCISSOR_BOX, mScissorRect);
raw_fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
raw_fGetIntegerv(LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE, &mMaxCubeMapTextureSize);
raw_fGetIntegerv(LOCAL_GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize);
raw_fGetIntegerv(LOCAL_GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
#ifdef XP_MACOSX
if (mWorkAroundDriverBugs && nsCocoaFeatures::OSXVersionMajor() == 10 &&
nsCocoaFeatures::OSXVersionMinor() < 12) {
if (mVendor == GLVendor::Intel) {
// see bug 737182 for 2D textures, bug 684882 for cube map textures.
mMaxTextureSize = std::min(mMaxTextureSize, 4096);
mMaxCubeMapTextureSize = std::min(mMaxCubeMapTextureSize, 512);
// for good measure, we align renderbuffers on what we do for 2D textures
mMaxRenderbufferSize = std::min(mMaxRenderbufferSize, 4096);
mNeedsTextureSizeChecks = true;
} else if (mVendor == GLVendor::NVIDIA) {
// See bug 879656. 8192 fails, 8191 works.
mMaxTextureSize = std::min(mMaxTextureSize, 8191);
mMaxRenderbufferSize = std::min(mMaxRenderbufferSize, 8191);
// Part of the bug 879656, but it also doesn't hurt the 877949
mNeedsTextureSizeChecks = true;
}
}
#endif
#ifdef MOZ_X11
if (mWorkAroundDriverBugs) {
if (mVendor == GLVendor::Nouveau) {
// see bug 814716. Clamp MaxCubeMapTextureSize at 2K for Nouveau.
mMaxCubeMapTextureSize = std::min(mMaxCubeMapTextureSize, 2048);
mNeedsTextureSizeChecks = true;
} else if (mVendor == GLVendor::Intel) {
// Bug 1199923. Driver seems to report a larger max size than
// actually supported.
mMaxTextureSize /= 2;
mMaxRenderbufferSize /= 2;
mNeedsTextureSizeChecks = true;
}
// Bug 1367570. Explicitly set vertex attributes [1,3] to opaque
// black because Nvidia doesn't do it for us.
if (mVendor == GLVendor::NVIDIA) {
for (size_t i = 1; i <= 3; ++i) {
mSymbols.fVertexAttrib4f(i, 0, 0, 0, 1);
}
}
}
#endif
if (mWorkAroundDriverBugs && Renderer() == GLRenderer::AdrenoTM420) {
// see bug 1194923. Calling glFlush before glDeleteFramebuffers
// prevents occasional driver crash.
mNeedsFlushBeforeDeleteFB = true;
}
#ifdef MOZ_WIDGET_ANDROID
if (mWorkAroundDriverBugs &&
(Renderer() == GLRenderer::AdrenoTM305 ||
Renderer() == GLRenderer::AdrenoTM320 ||
Renderer() == GLRenderer::AdrenoTM330) &&
jni::GetAPIVersion() < 21) {
// Bug 1164027. Driver crashes when functions such as
// glTexImage2D fail due to virtual memory exhaustion.
mTextureAllocCrashesOnMapFailure = true;
}
#endif
#if MOZ_WIDGET_ANDROID
if (mWorkAroundDriverBugs && Renderer() == GLRenderer::SGX540 &&
jni::GetAPIVersion() <= 15) {
// Bug 1288446. Driver sometimes crashes when uploading data to a
// texture if the render target has changed since the texture was
// rendered from. Calling glCheckFramebufferStatus after
// glFramebufferTexture2D prevents the crash.
mNeedsCheckAfterAttachTextureToFb = true;
}
#endif
mMaxTextureImageSize = mMaxTextureSize;
if (IsSupported(GLFeature::framebuffer_multisample)) {
fGetIntegerv(LOCAL_GL_MAX_SAMPLES, (GLint*)&mMaxSamples);
}
mMaxTexOrRbSize = std::min(mMaxTextureSize, mMaxRenderbufferSize);
////////////////////////////////////////////////////////////////////////////
// We're ready for final setup.
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
// TODO: Remove SurfaceCaps::any.
if (mCaps.any) {
mCaps.any = false;
mCaps.color = true;
mCaps.alpha = false;
}
MOZ_GL_ASSERT(this, IsCurrent());
if (ShouldSpew() && IsExtensionSupported(KHR_debug)) {
fEnable(LOCAL_GL_DEBUG_OUTPUT);
fDisable(LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS);
fDebugMessageCallback(&StaticDebugCallback, (void*)this);
fDebugMessageControl(LOCAL_GL_DONT_CARE, LOCAL_GL_DONT_CARE,
LOCAL_GL_DONT_CARE, 0, nullptr, true);
}
return true;
}
void GLContext::LoadMoreSymbols(const char* prefix, bool trygl) {
const auto fnLoadForExt = [this, prefix, trygl](const SymLoadStruct* list,
GLExtensions ext) {
return this->LoadExtSymbols(prefix, trygl, list, ext);
};
const auto fnLoadForFeature = [this, prefix, trygl](const SymLoadStruct* list,
GLFeature feature) {
return this->LoadFeatureSymbols(prefix, trygl, list, feature);
};
const auto fnLoadFeatureByCore = [this, fnLoadForFeature](
const SymLoadStruct* coreList,
const SymLoadStruct* extList,
GLFeature feature) {
const bool useCore = this->IsFeatureProvidedByCoreSymbols(feature);
const auto list = useCore ? coreList : extList;
return fnLoadForFeature(list, feature);
};
if (IsSupported(GLFeature::robustness)) {
const auto resetStrategy =
GetIntAs<GLuint>(LOCAL_GL_RESET_NOTIFICATION_STRATEGY);
if (resetStrategy != LOCAL_GL_LOSE_CONTEXT_ON_RESET) {
NS_WARNING(
"Robustness supported, strategy is not LOSE_CONTEXT_ON_RESET!");
if (ShouldSpew()) {
const bool isDisabled =
(resetStrategy == LOCAL_GL_NO_RESET_NOTIFICATION);
printf_stderr("Strategy: %s (0x%04x)",
(isDisabled ? "disabled" : "unrecognized"),
resetStrategy);
}
MarkUnsupported(GLFeature::robustness);
}
}
if (IsSupported(GLFeature::sync)) {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(FenceSync), CORE_SYMBOL(IsSync),
CORE_SYMBOL(DeleteSync), CORE_SYMBOL(ClientWaitSync),
CORE_SYMBOL(WaitSync), CORE_SYMBOL(GetInteger64v),
CORE_SYMBOL(GetSynciv), END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::sync);
}
if (IsExtensionSupported(OES_EGL_image)) {
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fEGLImageTargetTexture2D,
{"EGLImageTargetTexture2DOES", nullptr}},
{(PRFuncPtr*)&mSymbols.fEGLImageTargetRenderbufferStorage,
{"EGLImageTargetRenderbufferStorageOES", nullptr}},
END_SYMBOLS};
fnLoadForExt(symbols, OES_EGL_image);
}
if (IsExtensionSupported(APPLE_texture_range)) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(TextureRangeAPPLE),
END_SYMBOLS};
fnLoadForExt(symbols, APPLE_texture_range);
}
if (IsExtensionSupported(APPLE_fence)) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(FinishObjectAPPLE),
CORE_SYMBOL(TestObjectAPPLE), END_SYMBOLS};
fnLoadForExt(symbols, APPLE_fence);
}
// clang-format off
if (IsSupported(GLFeature::vertex_array_object)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fIsVertexArray, { "IsVertexArray", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenVertexArrays, { "GenVertexArrays", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindVertexArray, { "BindVertexArray", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, { "DeleteVertexArrays", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fIsVertexArray, { "IsVertexArrayARB", "IsVertexArrayOES", "IsVertexArrayAPPLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenVertexArrays, { "GenVertexArraysARB", "GenVertexArraysOES", "GenVertexArraysAPPLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindVertexArray, { "BindVertexArrayARB", "BindVertexArrayOES", "BindVertexArrayAPPLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, { "DeleteVertexArraysARB", "DeleteVertexArraysOES", "DeleteVertexArraysAPPLE", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::vertex_array_object);
}
if (IsSupported(GLFeature::draw_instanced)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, { "DrawArraysInstanced", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, { "DrawElementsInstanced", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, { "DrawArraysInstancedARB", "DrawArraysInstancedEXT", "DrawArraysInstancedNV", "DrawArraysInstancedANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, { "DrawElementsInstancedARB", "DrawElementsInstancedEXT", "DrawElementsInstancedNV", "DrawElementsInstancedANGLE", nullptr }
},
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_instanced);
}
if (IsSupported(GLFeature::instanced_arrays)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, { "VertexAttribDivisor", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, { "VertexAttribDivisorARB", "VertexAttribDivisorNV", "VertexAttribDivisorANGLE", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::instanced_arrays);
}
if (IsSupported(GLFeature::texture_storage)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexStorage2D, { "TexStorage2D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexStorage3D, { "TexStorage3D", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexStorage2D, { "TexStorage2DEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexStorage3D, { "TexStorage3DEXT", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage);
}
if (IsSupported(GLFeature::sampler_objects)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGenSamplers, { "GenSamplers", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteSamplers, { "DeleteSamplers", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsSampler, { "IsSampler", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindSampler, { "BindSampler", nullptr } },
{ (PRFuncPtr*) &mSymbols.fSamplerParameteri, { "SamplerParameteri", nullptr } },
{ (PRFuncPtr*) &mSymbols.fSamplerParameteriv, { "SamplerParameteriv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fSamplerParameterf, { "SamplerParameterf", nullptr } },
{ (PRFuncPtr*) &mSymbols.fSamplerParameterfv, { "SamplerParameterfv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetSamplerParameteriv, { "GetSamplerParameteriv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetSamplerParameterfv, { "GetSamplerParameterfv", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::sampler_objects);
}
// ARB_transform_feedback2/NV_transform_feedback2 is a
// superset of EXT_transform_feedback/NV_transform_feedback
// and adds glPauseTransformFeedback &
// glResumeTransformFeedback, which are required for WebGL2.
if (IsSupported(GLFeature::transform_feedback2)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferBase, { "BindBufferBase", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindBufferRange, { "BindBufferRange", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, { "GenTransformFeedbacks", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindTransformFeedback, { "BindTransformFeedback", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, { "DeleteTransformFeedbacks", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsTransformFeedback, { "IsTransformFeedback", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, { "BeginTransformFeedback", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEndTransformFeedback, { "EndTransformFeedback", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, { "TransformFeedbackVaryings", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, { "GetTransformFeedbackVarying", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, { "PauseTransformFeedback", nullptr } },
{ (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, { "ResumeTransformFeedback", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferBase, { "BindBufferBaseEXT", "BindBufferBaseNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindBufferRange, { "BindBufferRangeEXT", "BindBufferRangeNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, { "GenTransformFeedbacksNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindTransformFeedback, { "BindTransformFeedbackNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, { "DeleteTransformFeedbacksNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsTransformFeedback, { "IsTransformFeedbackNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, { "BeginTransformFeedbackEXT", "BeginTransformFeedbackNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEndTransformFeedback, { "EndTransformFeedbackEXT", "EndTransformFeedbackNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, { "TransformFeedbackVaryingsEXT", "TransformFeedbackVaryingsNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, { "GetTransformFeedbackVaryingEXT", "GetTransformFeedbackVaryingNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, { "PauseTransformFeedbackNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, { "ResumeTransformFeedbackNV", nullptr } },
END_SYMBOLS
};
if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage)) {
// Also mark bind_buffer_offset as unsupported.
MarkUnsupported(GLFeature::bind_buffer_offset);
}
}
if (IsSupported(GLFeature::bind_buffer_offset)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferOffset, { "BindBufferOffset", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferOffset,
{ "BindBufferOffsetEXT", "BindBufferOffsetNV", nullptr }
},
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::bind_buffer_offset);
}
if (IsSupported(GLFeature::query_counter)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fQueryCounter, { "QueryCounter", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fQueryCounter, { "QueryCounterEXT", "QueryCounterANGLE", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_counter);
}
if (IsSupported(GLFeature::query_objects)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBeginQuery, { "BeginQuery", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenQueries, { "GenQueries", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteQueries, { "DeleteQueries", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEndQuery, { "EndQuery", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryiv, { "GetQueryiv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, { "GetQueryObjectuiv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsQuery, { "IsQuery", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBeginQuery, { "BeginQueryEXT", "BeginQueryANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenQueries, { "GenQueriesEXT", "GenQueriesANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteQueries, { "DeleteQueriesEXT", "DeleteQueriesANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEndQuery, { "EndQueryEXT", "EndQueryANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryiv, { "GetQueryivEXT", "GetQueryivANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, { "GetQueryObjectuivEXT", "GetQueryObjectuivANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsQuery, { "IsQueryEXT", "IsQueryANGLE", nullptr } },
END_SYMBOLS
};
if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_objects)) {
MarkUnsupported(GLFeature::get_query_object_i64v);
MarkUnsupported(GLFeature::get_query_object_iv);
MarkUnsupported(GLFeature::occlusion_query);
MarkUnsupported(GLFeature::occlusion_query_boolean);
MarkUnsupported(GLFeature::occlusion_query2);
}
}
if (IsSupported(GLFeature::get_query_object_i64v)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, { "GetQueryObjecti64v", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, { "GetQueryObjectui64v", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, { "GetQueryObjecti64vEXT", "GetQueryObjecti64vANGLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, { "GetQueryObjectui64vEXT", "GetQueryObjectui64vANGLE", nullptr } },
END_SYMBOLS
};
if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_i64v)) {
MarkUnsupported(GLFeature::query_counter);
}
}
if (IsSupported(GLFeature::get_query_object_iv)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, { "GetQueryObjectiv", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, { "GetQueryObjectivEXT", "GetQueryObjectivANGLE", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_iv);
}
if (IsSupported(GLFeature::clear_buffers)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fClearBufferfi, { "ClearBufferfi", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClearBufferfv, { "ClearBufferfv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClearBufferiv, { "ClearBufferiv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClearBufferuiv, { "ClearBufferuiv", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::clear_buffers);
}
if (IsSupported(GLFeature::copy_buffer)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fCopyBufferSubData, { "CopyBufferSubData", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::copy_buffer);
}
if (IsSupported(GLFeature::draw_buffers)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawBuffers, { "DrawBuffers", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawBuffers, { "DrawBuffersARB", "DrawBuffersEXT", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_buffers);
}
if (IsSupported(GLFeature::draw_range_elements)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawRangeElements, { "DrawRangeElements", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawRangeElements, { "DrawRangeElementsEXT", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_range_elements);
}
if (IsSupported(GLFeature::get_integer_indexed)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetIntegeri_v, { "GetIntegeri_v", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] ={
{ (PRFuncPtr*) &mSymbols.fGetIntegeri_v, { "GetIntegerIndexedvEXT", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_integer_indexed);
}
if (IsSupported(GLFeature::get_integer64_indexed)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetInteger64i_v, { "GetInteger64i_v", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::get_integer64_indexed);
}
if (IsSupported(GLFeature::gpu_shader4)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribIiv, { "GetVertexAttribIiv", "GetVertexAttribIivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribIuiv, { "GetVertexAttribIuiv", "GetVertexAttribIuivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4i, { "VertexAttribI4i", "VertexAttribI4iEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4iv, { "VertexAttribI4iv","VertexAttribI4ivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4ui, { "VertexAttribI4ui", "VertexAttribI4uiEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4uiv, { "VertexAttribI4uiv", "VertexAttribI4uivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexAttribIPointer, { "VertexAttribIPointer", "VertexAttribIPointerEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform1ui, { "Uniform1ui", "Uniform1uiEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform2ui, { "Uniform2ui", "Uniform2uiEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform3ui, { "Uniform3ui", "Uniform3uiEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform4ui, { "Uniform4ui", "Uniform4uiEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform1uiv, { "Uniform1uiv", "Uniform1uivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform2uiv, { "Uniform2uiv", "Uniform2uivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform3uiv, { "Uniform3uiv", "Uniform3uivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniform4uiv, { "Uniform4uiv", "Uniform4uivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetFragDataLocation, { "GetFragDataLocation", "GetFragDataLocationEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetUniformuiv, { "GetUniformuiv", "GetUniformuivEXT", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::gpu_shader4);
}
if (IsSupported(GLFeature::map_buffer_range)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fMapBufferRange, { "MapBufferRange", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFlushMappedBufferRange, { "FlushMappedBufferRange", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUnmapBuffer, { "UnmapBuffer", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::map_buffer_range);
}
if (IsSupported(GLFeature::texture_3D)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexImage3D, { "TexImage3D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexSubImage3D, { "TexSubImage3D", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexSubImage3D, { "TexSubImage3DEXT", "TexSubImage3DOES", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D);
}
if (IsSupported(GLFeature::texture_3D_compressed)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, { "CompressedTexImage3D", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, { "CompressedTexSubImage3D", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, { "CompressedTexImage3DARB", "CompressedTexImage3DOES", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, { "CompressedTexSubImage3DARB", "CompressedTexSubImage3DOES", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_compressed);
}
if (IsSupported(GLFeature::texture_3D_copy)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, { "CopyTexSubImage3D", nullptr } },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, { "CopyTexSubImage3DEXT", "CopyTexSubImage3DOES", nullptr } },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_copy);
}
if (IsSupported(GLFeature::uniform_buffer_object)) {
// Note: Don't query for glGetActiveUniformName because it is not
// supported by GL ES 3.
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetUniformIndices, { "GetUniformIndices", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniformsiv, { "GetActiveUniformsiv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetUniformBlockIndex, { "GetUniformBlockIndex", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockiv, { "GetActiveUniformBlockiv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockName, { "GetActiveUniformBlockName", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformBlockBinding, { "UniformBlockBinding", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::uniform_buffer_object);
}
if (IsSupported(GLFeature::uniform_matrix_nonsquare)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2x3fv, { "UniformMatrix2x3fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2x4fv, { "UniformMatrix2x4fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3x2fv, { "UniformMatrix3x2fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3x4fv, { "UniformMatrix3x4fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4x2fv, { "UniformMatrix4x2fv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4x3fv, { "UniformMatrix4x3fv", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::uniform_matrix_nonsquare);
}
if (IsSupported(GLFeature::internalformat_query)) {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(GetInternalformativ),
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::internalformat_query);
}
if (IsSupported(GLFeature::invalidate_framebuffer)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fInvalidateFramebuffer, { "InvalidateFramebuffer", nullptr } },
{ (PRFuncPtr*) &mSymbols.fInvalidateSubFramebuffer, { "InvalidateSubFramebuffer", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::invalidate_framebuffer);
}
if (IsSupported(GLFeature::prim_restart)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fPrimitiveRestartIndex, { "PrimitiveRestartIndex", "PrimitiveRestartIndexNV", nullptr } },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::prim_restart);
}
if (IsExtensionSupported(KHR_debug)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fDebugMessageControl, { "DebugMessageControl", "DebugMessageControlKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDebugMessageInsert, { "DebugMessageInsert", "DebugMessageInsertKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDebugMessageCallback, { "DebugMessageCallback", "DebugMessageCallbackKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetDebugMessageLog, { "GetDebugMessageLog", "GetDebugMessageLogKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetPointerv, { "GetPointerv", "GetPointervKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPushDebugGroup, { "PushDebugGroup", "PushDebugGroupKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPopDebugGroup, { "PopDebugGroup", "PopDebugGroupKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fObjectLabel, { "ObjectLabel", "ObjectLabelKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetObjectLabel, { "GetObjectLabel", "GetObjectLabelKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fObjectPtrLabel, { "ObjectPtrLabel", "ObjectPtrLabelKHR", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetObjectPtrLabel, { "GetObjectPtrLabel", "GetObjectPtrLabelKHR", nullptr } },
END_SYMBOLS
};
fnLoadForExt(symbols, KHR_debug);
}
if (IsExtensionSupported(NV_fence)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGenFences, { "GenFencesNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteFences, { "DeleteFencesNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fSetFence, { "SetFenceNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTestFence, { "TestFenceNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFinishFence, { "FinishFenceNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsFence, { "IsFenceNV", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetFenceiv, { "GetFenceivNV", nullptr } },
END_SYMBOLS
};
fnLoadForExt(symbols, NV_fence);
}
// clang-format on
if (IsExtensionSupported(NV_texture_barrier)) {
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fTextureBarrier, {"TextureBarrierNV", nullptr}},
END_SYMBOLS};
fnLoadForExt(symbols, NV_texture_barrier);
}
if (IsSupported(GLFeature::read_buffer)) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(ReadBuffer), END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::read_buffer);
}
if (IsExtensionSupported(APPLE_framebuffer_multisample)) {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(ResolveMultisampleFramebufferAPPLE), END_SYMBOLS};
fnLoadForExt(symbols, APPLE_framebuffer_multisample);
}
// Load developer symbols, don't fail if we can't find them.
const SymLoadStruct devSymbols[] = {CORE_SYMBOL(GetTexImage),
CORE_SYMBOL(GetTexLevelParameteriv),
END_SYMBOLS};
const bool warnOnFailures = ShouldSpew();
LoadSymbols(devSymbols, trygl, prefix, warnOnFailures);
}
#undef CORE_SYMBOL
#undef CORE_EXT_SYMBOL2
#undef EXT_SYMBOL2
#undef EXT_SYMBOL3
#undef END_SYMBOLS
void GLContext::DebugCallback(GLenum source, GLenum type, GLuint id,
GLenum severity, GLsizei length,
const GLchar* message) {
nsAutoCString sourceStr;
switch (source) {
case LOCAL_GL_DEBUG_SOURCE_API:
sourceStr = NS_LITERAL_CSTRING("SOURCE_API");
break;
case LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM:
sourceStr = NS_LITERAL_CSTRING("SOURCE_WINDOW_SYSTEM");
break;
case LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER:
sourceStr = NS_LITERAL_CSTRING("SOURCE_SHADER_COMPILER");
break;
case LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY:
sourceStr = NS_LITERAL_CSTRING("SOURCE_THIRD_PARTY");
break;
case LOCAL_GL_DEBUG_SOURCE_APPLICATION:
sourceStr = NS_LITERAL_CSTRING("SOURCE_APPLICATION");
break;
case LOCAL_GL_DEBUG_SOURCE_OTHER:
sourceStr = NS_LITERAL_CSTRING("SOURCE_OTHER");
break;
default:
sourceStr = nsPrintfCString("<source 0x%04x>", source);
break;
}
nsAutoCString typeStr;
switch (type) {
case LOCAL_GL_DEBUG_TYPE_ERROR:
typeStr = NS_LITERAL_CSTRING("TYPE_ERROR");
break;
case LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
typeStr = NS_LITERAL_CSTRING("TYPE_DEPRECATED_BEHAVIOR");
break;
case LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
typeStr = NS_LITERAL_CSTRING("TYPE_UNDEFINED_BEHAVIOR");
break;
case LOCAL_GL_DEBUG_TYPE_PORTABILITY:
typeStr = NS_LITERAL_CSTRING("TYPE_PORTABILITY");
break;
case LOCAL_GL_DEBUG_TYPE_PERFORMANCE:
typeStr = NS_LITERAL_CSTRING("TYPE_PERFORMANCE");
break;
case LOCAL_GL_DEBUG_TYPE_OTHER:
typeStr = NS_LITERAL_CSTRING("TYPE_OTHER");
break;
case LOCAL_GL_DEBUG_TYPE_MARKER:
typeStr = NS_LITERAL_CSTRING("TYPE_MARKER");
break;
default:
typeStr = nsPrintfCString("<type 0x%04x>", type);
break;
}
nsAutoCString sevStr;
switch (severity) {
case LOCAL_GL_DEBUG_SEVERITY_HIGH:
sevStr = NS_LITERAL_CSTRING("SEVERITY_HIGH");
break;
case LOCAL_GL_DEBUG_SEVERITY_MEDIUM:
sevStr = NS_LITERAL_CSTRING("SEVERITY_MEDIUM");
break;
case LOCAL_GL_DEBUG_SEVERITY_LOW:
sevStr = NS_LITERAL_CSTRING("SEVERITY_LOW");
break;
case LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION:
sevStr = NS_LITERAL_CSTRING("SEVERITY_NOTIFICATION");
break;
default:
sevStr = nsPrintfCString("<severity 0x%04x>", severity);
break;
}
printf_stderr("[KHR_debug: 0x%" PRIxPTR "] ID %u: %s, %s, %s:\n %s\n",
(uintptr_t)this, id, sourceStr.BeginReading(),
typeStr.BeginReading(), sevStr.BeginReading(), message);
}
void GLContext::InitExtensions() {
MOZ_GL_ASSERT(this, IsCurrent());
std::vector<nsCString> driverExtensionList;
[&]() {
if (mSymbols.fGetStringi) {
GLuint count = 0;
if (GetPotentialInteger(LOCAL_GL_NUM_EXTENSIONS, (GLint*)&count)) {
for (GLuint i = 0; i < count; i++) {
// This is UTF-8.
const char* rawExt = (const char*)fGetStringi(LOCAL_GL_EXTENSIONS, i);
// We CANNOT use nsDependentCString here, because the spec doesn't
// guarantee that the pointers returned are different, only that their
// contents are. On Flame, each of these index string queries returns
// the same address.
driverExtensionList.push_back(nsCString(rawExt));
}
return;
}
}
const char* rawExts = (const char*)fGetString(LOCAL_GL_EXTENSIONS);
if (rawExts) {
nsDependentCString exts(rawExts);
SplitByChar(exts, ' ', &driverExtensionList);
}
}();
const auto err = fGetError();
MOZ_ALWAYS_TRUE(!IsBadCallError(err));
const bool shouldDumpExts = ShouldDumpExts();
if (shouldDumpExts) {
printf_stderr("%i GL driver extensions: (*: recognized)\n",
(uint32_t)driverExtensionList.size());
}
MarkBitfieldByStrings(driverExtensionList, shouldDumpExts, sExtensionNames,
&mAvailableExtensions);
if (WorkAroundDriverBugs()) {
if (Vendor() == GLVendor::Qualcomm) {
// Some Adreno drivers do not report GL_OES_EGL_sync, but they really do
// support it.
MarkExtensionSupported(OES_EGL_sync);
}
if (Vendor() == GLVendor::ATI) {
// ATI drivers say this extension exists, but we can't
// actually find the EGLImageTargetRenderbufferStorageOES
// extension function pointer in the drivers.
MarkExtensionUnsupported(OES_EGL_image);
}
if (Vendor() == GLVendor::Imagination && Renderer() == GLRenderer::SGX540) {
// Bug 980048
MarkExtensionUnsupported(OES_EGL_sync);
}
#ifdef MOZ_WIDGET_ANDROID
if (Vendor() == GLVendor::Imagination &&
Renderer() == GLRenderer::SGX544MP && jni::GetAPIVersion() < 21) {
// Bug 1026404
MarkExtensionUnsupported(OES_EGL_image);
MarkExtensionUnsupported(OES_EGL_image_external);
}
#endif
if (Vendor() == GLVendor::ARM && (Renderer() == GLRenderer::Mali400MP ||
Renderer() == GLRenderer::Mali450MP)) {
// Bug 1264505
MarkExtensionUnsupported(OES_EGL_image_external);
}
if (Renderer() == GLRenderer::AndroidEmulator) {
// the Android emulator, which we use to run B2G reftests on,
// doesn't expose the OES_rgb8_rgba8 extension, but it seems to
// support it (tautologically, as it only runs on desktop GL).
MarkExtensionSupported(OES_rgb8_rgba8);
}
if (Vendor() == GLVendor::VMware &&
Renderer() == GLRenderer::GalliumLlvmpipe) {
// The llvmpipe driver that is used on linux try servers appears to have
// buggy support for s3tc/dxt1 compressed textures.
// See Bug 975824.
MarkExtensionUnsupported(EXT_texture_compression_s3tc);
MarkExtensionUnsupported(EXT_texture_compression_dxt1);
MarkExtensionUnsupported(ANGLE_texture_compression_dxt3);
MarkExtensionUnsupported(ANGLE_texture_compression_dxt5);
}
#ifdef XP_MACOSX
// Bug 1009642: On OSX Mavericks (10.9), the driver for Intel HD
// 3000 appears to be buggy WRT updating sub-images of S3TC
// textures with glCompressedTexSubImage2D. Works on Intel HD 4000
// and Intel HD 5000/Iris that I tested.
// Bug 1124996: Appears to be the same on OSX Yosemite (10.10)
if (nsCocoaFeatures::OSXVersionMajor() == 10 &&
nsCocoaFeatures::OSXVersionMinor() >= 9 &&
Renderer() == GLRenderer::IntelHD3000) {
MarkExtensionUnsupported(EXT_texture_compression_s3tc);
}
// OSX supports EXT_texture_sRGB in Legacy contexts, but not in Core
// contexts. Though EXT_texture_sRGB was included into GL2.1, it *excludes*
// the interactions with s3tc. Strictly speaking, you must advertize support
// for EXT_texture_sRGB in order to allow for srgb+s3tc on desktop GL. The
// omission of EXT_texture_sRGB in OSX Core contexts appears to be a bug.
MarkExtensionSupported(EXT_texture_sRGB);
#endif
}
if (shouldDumpExts) {
printf_stderr("\nActivated extensions:\n");
for (size_t i = 0; i < mAvailableExtensions.size(); i++) {
if (!mAvailableExtensions[i]) continue;
const char* ext = sExtensionNames[i];
printf_stderr("[%i] %s\n", (uint32_t)i, ext);
}
}
}
void GLContext::PlatformStartup() {
RegisterStrongMemoryReporter(new GfxTexturesReporter());
}
// Common code for checking for both GL extensions and GLX extensions.
bool GLContext::ListHasExtension(const GLubyte* extensions,
const char* extension) {
// fix bug 612572 - we were crashing as we were calling this function with
// extensions==null
if (extensions == nullptr || extension == nullptr) return false;
const GLubyte* start;
GLubyte* where;
GLubyte* terminator;
/* Extension names should not have spaces. */
where = (GLubyte*)strchr(extension, ' ');
if (where || *extension == '\0') return false;
/*
* It takes a bit of care to be fool-proof about parsing the
* OpenGL extensions string. Don't be fooled by sub-strings,
* etc.
*/
start = extensions;
for (;;) {
where = (GLubyte*)strstr((const char*)start, extension);
if (!where) {
break;
}
terminator = where + strlen(extension);
if (where == start || *(where - 1) == ' ') {
if (*terminator == ' ' || *terminator == '\0') {
return true;
}
}
start = terminator;
}
return false;
}
GLFormats GLContext::ChooseGLFormats(const SurfaceCaps& caps) const {
GLFormats formats;
// If we're on ES2 hardware and we have an explicit request for 16 bits of
// color or less OR we don't support full 8-bit color, return a 4444 or 565
// format.
bool bpp16 = caps.bpp16;
if (IsGLES()) {
if (!IsExtensionSupported(OES_rgb8_rgba8)) bpp16 = true;
} else {
// RGB565 is uncommon on desktop, requiring ARB_ES2_compatibility.
// Since it's also vanishingly useless there, let's not support it.
bpp16 = false;
}
if (bpp16) {
MOZ_ASSERT(IsGLES());
if (caps.alpha) {
formats.color_texInternalFormat = LOCAL_GL_RGBA;
formats.color_texFormat = LOCAL_GL_RGBA;
formats.color_texType = LOCAL_GL_UNSIGNED_SHORT_4_4_4_4;
formats.color_rbFormat = LOCAL_GL_RGBA4;
} else {
formats.color_texInternalFormat = LOCAL_GL_RGB;
formats.color_texFormat = LOCAL_GL_RGB;
formats.color_texType = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
formats.color_rbFormat = LOCAL_GL_RGB565;
}
} else {
formats.color_texType = LOCAL_GL_UNSIGNED_BYTE;
if (caps.alpha) {
formats.color_texInternalFormat =
IsGLES() ? LOCAL_GL_RGBA : LOCAL_GL_RGBA8;
formats.color_texFormat = LOCAL_GL_RGBA;
formats.color_rbFormat = LOCAL_GL_RGBA8;
} else {
formats.color_texInternalFormat = IsGLES() ? LOCAL_GL_RGB : LOCAL_GL_RGB8;
formats.color_texFormat = LOCAL_GL_RGB;
formats.color_rbFormat = LOCAL_GL_RGB8;
}
}
uint32_t msaaLevel = gfxPrefs::MSAALevel();
GLsizei samples = msaaLevel * msaaLevel;
samples = std::min(samples, mMaxSamples);
// Bug 778765.
if (WorkAroundDriverBugs() && samples == 1) {
samples = 0;
}
formats.samples = samples;
// Be clear that these are 0 if unavailable.
formats.depthStencil = 0;
if (IsSupported(GLFeature::packed_depth_stencil)) {
formats.depthStencil = LOCAL_GL_DEPTH24_STENCIL8;
}
formats.depth = 0;
if (IsGLES()) {
if (IsExtensionSupported(OES_depth24)) {
formats.depth = LOCAL_GL_DEPTH_COMPONENT24;
} else {
formats.depth = LOCAL_GL_DEPTH_COMPONENT16;
}
} else {
formats.depth = LOCAL_GL_DEPTH_COMPONENT24;
}
formats.stencil = LOCAL_GL_STENCIL_INDEX8;
return formats;
}
bool GLContext::IsFramebufferComplete(GLuint fb, GLenum* pStatus) {
MOZ_ASSERT(fb);
ScopedBindFramebuffer autoFB(this, fb);
MOZ_GL_ASSERT(this, fIsFramebuffer(fb));
GLenum status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (pStatus) *pStatus = status;
return status == LOCAL_GL_FRAMEBUFFER_COMPLETE;
}
void GLContext::AttachBuffersToFB(GLuint colorTex, GLuint colorRB,
GLuint depthRB, GLuint stencilRB, GLuint fb,
GLenum target) {
MOZ_ASSERT(fb);
MOZ_ASSERT(!(colorTex && colorRB));
ScopedBindFramebuffer autoFB(this, fb);
MOZ_GL_ASSERT(this, fIsFramebuffer(fb)); // It only counts after being bound.
if (colorTex) {
MOZ_GL_ASSERT(this, fIsTexture(colorTex));
MOZ_ASSERT(target == LOCAL_GL_TEXTURE_2D ||
target == LOCAL_GL_TEXTURE_RECTANGLE_ARB);
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target, colorTex, 0);
} else if (colorRB) {
// On the Android 4.3 emulator, IsRenderbuffer may return false incorrectly.
MOZ_GL_ASSERT(this, fIsRenderbuffer(colorRB) ||
Renderer() == GLRenderer::AndroidEmulator);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, colorRB);
}
if (depthRB) {
MOZ_GL_ASSERT(this, fIsRenderbuffer(depthRB) ||
Renderer() == GLRenderer::AndroidEmulator);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, depthRB);
}
if (stencilRB) {
MOZ_GL_ASSERT(this, fIsRenderbuffer(stencilRB) ||
Renderer() == GLRenderer::AndroidEmulator);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, stencilRB);
}
}
bool GLContext::AssembleOffscreenFBs(const GLuint colorMSRB,
const GLuint depthRB,
const GLuint stencilRB,
const GLuint texture, GLuint* drawFB_out,
GLuint* readFB_out) {
if (!colorMSRB && !texture) {
MOZ_ASSERT(!depthRB && !stencilRB);
if (drawFB_out) *drawFB_out = 0;
if (readFB_out) *readFB_out = 0;
return true;
}
ScopedBindFramebuffer autoFB(this);
GLuint drawFB = 0;
GLuint readFB = 0;
if (texture) {
readFB = 0;
fGenFramebuffers(1, &readFB);
BindFB(readFB);
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_TEXTURE_2D, texture, 0);
}
if (colorMSRB) {
drawFB = 0;
fGenFramebuffers(1, &drawFB);
BindFB(drawFB);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, colorMSRB);
} else {
drawFB = readFB;
}
MOZ_ASSERT(GetFB() == drawFB);
if (depthRB) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, depthRB);
}
if (stencilRB) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, stencilRB);
}
// We should be all resized. Check for framebuffer completeness.
GLenum status;
bool isComplete = true;
if (!IsFramebufferComplete(drawFB, &status)) {
NS_WARNING("DrawFBO: Incomplete");
#ifdef MOZ_GL_DEBUG
if (ShouldSpew()) {
printf_stderr("Framebuffer status: %X\n", status);
}
#endif
isComplete = false;
}
if (!IsFramebufferComplete(readFB, &status)) {
NS_WARNING("ReadFBO: Incomplete");
#ifdef MOZ_GL_DEBUG
if (ShouldSpew()) {
printf_stderr("Framebuffer status: %X\n", status);
}
#endif
isComplete = false;
}
if (drawFB_out) {
*drawFB_out = drawFB;
} else if (drawFB) {
MOZ_CRASH("drawFB created when not requested!");
}
if (readFB_out) {
*readFB_out = readFB;
} else if (readFB) {
MOZ_CRASH("readFB created when not requested!");
}
return isComplete;
}
void GLContext::MarkDestroyed() {
if (IsDestroyed()) return;
// Null these before they're naturally nulled after dtor, as we want GLContext
// to still be alive in *their* dtors.
mScreen = nullptr;
mBlitHelper = nullptr;
mReadTexImageHelper = nullptr;
mContextLost = true;
mSymbols = {};
}
// -
#ifdef MOZ_GL_DEBUG
/* static */ void GLContext::AssertNotPassingStackBufferToTheGL(
const void* ptr) {
int somethingOnTheStack;
const void* someStackPtr = &somethingOnTheStack;
const int page_bits = 12;
intptr_t page = reinterpret_cast<uintptr_t>(ptr) >> page_bits;
intptr_t someStackPage =
reinterpret_cast<uintptr_t>(someStackPtr) >> page_bits;
uintptr_t pageDistance = std::abs(page - someStackPage);
// Explanation for the "distance <= 1" check here as opposed to just
// an equality check.
//
// Here we assume that pages immediately adjacent to the someStackAddress
// page, are also stack pages. That allows to catch the case where the calling
// frame put a buffer on the stack, and we just crossed the page boundary.
// That is likely to happen, precisely, when using stack arrays. I hit that
// specifically with CompositorOGL::Initialize.
//
// In theory we could be unlucky and wrongly assert here. If that happens,
// it will only affect debug builds, and looking at stacks we'll be able to
// see that this assert is wrong and revert to the conservative and safe
// approach of only asserting when address and someStackAddress are
// on the same page.
bool isStackAddress = pageDistance <= 1;
MOZ_ASSERT(!isStackAddress,
"Please don't pass stack arrays to the GL. "
"Consider using HeapCopyOfStackArray. "
"See bug 1005658.");
}
void GLContext::CreatedProgram(GLContext* aOrigin, GLuint aName) {
mTrackedPrograms.AppendElement(NamedResource(aOrigin, aName));
}
void GLContext::CreatedShader(GLContext* aOrigin, GLuint aName) {
mTrackedShaders.AppendElement(NamedResource(aOrigin, aName));
}
void GLContext::CreatedBuffers(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedBuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedQueries(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedQueries.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedTextures(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedTextures.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedFramebuffers(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedFramebuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedRenderbuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
static void RemoveNamesFromArray(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames,
nsTArray<GLContext::NamedResource>& aArray) {
for (GLsizei j = 0; j < aCount; ++j) {
GLuint name = aNames[j];
// name 0 can be ignored
if (name == 0) continue;
for (uint32_t i = 0; i < aArray.Length(); ++i) {
if (aArray[i].name == name) {
aArray.RemoveElementAt(i);
break;
}
}
}
}
void GLContext::DeletedProgram(GLContext* aOrigin, GLuint aName) {
RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedPrograms);
}
void GLContext::DeletedShader(GLContext* aOrigin, GLuint aName) {
RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedShaders);
}
void GLContext::DeletedBuffers(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedBuffers);
}
void GLContext::DeletedQueries(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedQueries);
}
void GLContext::DeletedTextures(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedTextures);
}
void GLContext::DeletedFramebuffers(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedFramebuffers);
}
void GLContext::DeletedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedRenderbuffers);
}
static void MarkContextDestroyedInArray(
GLContext* aContext, nsTArray<GLContext::NamedResource>& aArray) {
for (uint32_t i = 0; i < aArray.Length(); ++i) {
if (aArray[i].origin == aContext) aArray[i].originDeleted = true;
}
}
void GLContext::SharedContextDestroyed(GLContext* aChild) {
MarkContextDestroyedInArray(aChild, mTrackedPrograms);
MarkContextDestroyedInArray(aChild, mTrackedShaders);
MarkContextDestroyedInArray(aChild, mTrackedTextures);
MarkContextDestroyedInArray(aChild, mTrackedFramebuffers);
MarkContextDestroyedInArray(aChild, mTrackedRenderbuffers);
MarkContextDestroyedInArray(aChild, mTrackedBuffers);
MarkContextDestroyedInArray(aChild, mTrackedQueries);
}
static void ReportArrayContents(
const char* title, const nsTArray<GLContext::NamedResource>& aArray) {
if (aArray.Length() == 0) return;
printf_stderr("%s:\n", title);
nsTArray<GLContext::NamedResource> copy(aArray);
copy.Sort();
GLContext* lastContext = nullptr;
for (uint32_t i = 0; i < copy.Length(); ++i) {
if (lastContext != copy[i].origin) {
if (lastContext) printf_stderr("\n");
printf_stderr(" [%p - %s] ", copy[i].origin,
copy[i].originDeleted ? "deleted" : "live");
lastContext = copy[i].origin;
}
printf_stderr("%d ", copy[i].name);
}
printf_stderr("\n");
}
void GLContext::ReportOutstandingNames() {
if (!ShouldSpew()) return;
printf_stderr("== GLContext %p Outstanding ==\n", this);
ReportArrayContents("Outstanding Textures", mTrackedTextures);
ReportArrayContents("Outstanding Buffers", mTrackedBuffers);
ReportArrayContents("Outstanding Queries", mTrackedQueries);
ReportArrayContents("Outstanding Programs", mTrackedPrograms);
ReportArrayContents("Outstanding Shaders", mTrackedShaders);
ReportArrayContents("Outstanding Framebuffers", mTrackedFramebuffers);
ReportArrayContents("Outstanding Renderbuffers", mTrackedRenderbuffers);
}
#endif /* DEBUG */
void GLContext::GuaranteeResolve() {
if (mScreen) {
mScreen->AssureBlitted();
}
fFinish();
}
const gfx::IntSize& GLContext::OffscreenSize() const {
MOZ_ASSERT(IsOffscreen());
return mScreen->Size();
}
bool GLContext::CreateScreenBufferImpl(const IntSize& size,
const SurfaceCaps& caps) {
UniquePtr<GLScreenBuffer> newScreen =
GLScreenBuffer::Create(this, size, caps);
if (!newScreen) return false;
if (!newScreen->Resize(size)) {
return false;
}
// This will rebind to 0 (Screen) if needed when
// it falls out of scope.
ScopedBindFramebuffer autoFB(this);
mScreen = std::move(newScreen);
return true;
}
bool GLContext::ResizeScreenBuffer(const IntSize& size) {
if (!IsOffscreenSizeAllowed(size)) return false;
return mScreen->Resize(size);
}
void GLContext::ForceDirtyScreen() {
ScopedBindFramebuffer autoFB(0);
BeforeGLDrawCall();
// no-op; just pretend we did something
AfterGLDrawCall();
}
void GLContext::CleanDirtyScreen() {
ScopedBindFramebuffer autoFB(0);
BeforeGLReadCall();
// no-op; we just want to make sure the Read FBO is updated if it needs to be
AfterGLReadCall();
}
bool GLContext::IsOffscreenSizeAllowed(const IntSize& aSize) const {
int32_t biggerDimension = std::max(aSize.width, aSize.height);
int32_t maxAllowed = std::min(mMaxRenderbufferSize, mMaxTextureSize);
return biggerDimension <= maxAllowed;
}
bool GLContext::IsOwningThreadCurrent() {
return PlatformThread::CurrentId() == mOwningThreadId;
}
GLBlitHelper* GLContext::BlitHelper() {
if (!mBlitHelper) {
mBlitHelper.reset(new GLBlitHelper(this));
}
return mBlitHelper.get();
}
GLReadTexImageHelper* GLContext::ReadTexImageHelper() {
if (!mReadTexImageHelper) {
mReadTexImageHelper = MakeUnique<GLReadTexImageHelper>(this);
}
return mReadTexImageHelper.get();
}
void GLContext::FlushIfHeavyGLCallsSinceLastFlush() {
if (!mHeavyGLCallsSinceLastFlush) {
return;
}
if (MakeCurrent()) {
fFlush();
}
}
/*static*/ bool GLContext::ShouldDumpExts() {
return gfxEnv::GlDumpExtensions();
}
bool DoesStringMatch(const char* aString, const char* aWantedString) {
if (!aString || !aWantedString) return false;
const char* occurrence = strstr(aString, aWantedString);
// aWanted not found
if (!occurrence) return false;
// aWantedString preceded by alpha character
if (occurrence != aString && isalpha(*(occurrence - 1))) return false;
// aWantedVendor followed by alpha character
const char* afterOccurrence = occurrence + strlen(aWantedString);
if (isalpha(*afterOccurrence)) return false;
return true;
}
/*static*/ bool GLContext::ShouldSpew() { return gfxEnv::GlSpew(); }
void SplitByChar(const nsACString& str, const char delim,
std::vector<nsCString>* const out) {
uint32_t start = 0;
while (true) {
int32_t end = str.FindChar(' ', start);
if (end == -1) break;
uint32_t len = (uint32_t)end - start;
nsDependentCSubstring substr(str, start, len);
out->push_back(nsCString(substr));
start = end + 1;
}
nsDependentCSubstring substr(str, start);
out->push_back(nsCString(substr));
}
bool GLContext::Readback(SharedSurface* src, gfx::DataSourceSurface* dest) {
MOZ_ASSERT(src && dest);
MOZ_ASSERT(dest->GetSize() == src->mSize);
if (!MakeCurrent()) {
return false;
}
SharedSurface* prev = GetLockedSurface();
const bool needsSwap = src != prev;
if (needsSwap) {
if (prev) prev->UnlockProd();
src->LockProd();
}
GLuint tempFB = 0;
GLuint tempTex = 0;
{
ScopedBindFramebuffer autoFB(this);
// We're consuming from the producer side, so which do we use?
// Really, we just want a read-only lock, so ConsumerAcquire is the best
// match.
src->ProducerReadAcquire();
if (src->mAttachType == AttachmentType::Screen) {
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
} else {
fGenFramebuffers(1, &tempFB);
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, tempFB);
switch (src->mAttachType) {
case AttachmentType::GLTexture:
fFramebufferTexture2D(
LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
src->ProdTextureTarget(), src->ProdTexture(), 0);
break;
case AttachmentType::GLRenderbuffer:
fFramebufferRenderbuffer(
LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, src->ProdRenderbuffer());
break;
default:
MOZ_CRASH("GFX: bad `src->mAttachType`.");
}
DebugOnly<GLenum> status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
MOZ_GL_ASSERT(this, status == LOCAL_GL_FRAMEBUFFER_COMPLETE);
}
if (src->NeedsIndirectReads()) {
fGenTextures(1, &tempTex);
{
ScopedBindTexture autoTex(this, tempTex);
GLenum format = src->mHasAlpha ? LOCAL_GL_RGBA : LOCAL_GL_RGB;
auto width = src->mSize.width;
auto height = src->mSize.height;
fCopyTexImage2D(LOCAL_GL_TEXTURE_2D, 0, format, 0, 0, width, height, 0);
}
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_TEXTURE_2D, tempTex, 0);
}
ReadPixelsIntoDataSurface(this, dest);
src->ProducerReadRelease();
}
if (tempFB) fDeleteFramebuffers(1, &tempFB);
if (tempTex) {
fDeleteTextures(1, &tempTex);
}
if (needsSwap) {
src->UnlockProd();
if (prev) prev->LockProd();
}
return true;
}
// Do whatever tear-down is necessary after drawing to our offscreen FBO,
// if it's bound.
void GLContext::AfterGLDrawCall() {
if (mScreen) {
mScreen->AfterDrawCall();
}
mHeavyGLCallsSinceLastFlush = true;
}
// Do whatever setup is necessary to read from our offscreen FBO, if it's
// bound.
void GLContext::BeforeGLReadCall() {
if (mScreen) mScreen->BeforeReadCall();
}
void GLContext::fBindFramebuffer(GLenum target, GLuint framebuffer) {
if (!mScreen) {
raw_fBindFramebuffer(target, framebuffer);
return;
}
switch (target) {
case LOCAL_GL_DRAW_FRAMEBUFFER_EXT:
mScreen->BindDrawFB(framebuffer);
return;
case LOCAL_GL_READ_FRAMEBUFFER_EXT:
mScreen->BindReadFB(framebuffer);
return;
case LOCAL_GL_FRAMEBUFFER:
mScreen->BindFB(framebuffer);
return;
default:
// Nothing we care about, likely an error.
break;
}
raw_fBindFramebuffer(target, framebuffer);
}
void GLContext::fCopyTexImage2D(GLenum target, GLint level,
GLenum internalformat, GLint x, GLint y,
GLsizei width, GLsizei height, GLint border) {
if (!IsTextureSizeSafeToPassToDriver(target, width, height)) {
// pass wrong values to cause the GL to generate GL_INVALID_VALUE.
// See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver.
level = -1;
width = -1;
height = -1;
border = -1;
}
BeforeGLReadCall();
bool didCopyTexImage2D = false;
if (mScreen) {
didCopyTexImage2D = mScreen->CopyTexImage2D(target, level, internalformat,
x, y, width, height, border);
}
if (!didCopyTexImage2D) {
raw_fCopyTexImage2D(target, level, internalformat, x, y, width, height,
border);
}
AfterGLReadCall();
}
void GLContext::fGetIntegerv(GLenum pname, GLint* params) {
switch (pname) {
// LOCAL_GL_FRAMEBUFFER_BINDING is equal to
// LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT,
// so we don't need two cases.
case LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT:
if (mScreen) {
*params = mScreen->GetDrawFB();
} else {
raw_fGetIntegerv(pname, params);
}
break;
case LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT:
if (mScreen) {
*params = mScreen->GetReadFB();
} else {
raw_fGetIntegerv(pname, params);
}
break;
case LOCAL_GL_MAX_TEXTURE_SIZE:
MOZ_ASSERT(mMaxTextureSize > 0);
*params = mMaxTextureSize;
break;
case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE:
MOZ_ASSERT(mMaxCubeMapTextureSize > 0);
*params = mMaxCubeMapTextureSize;
break;
case LOCAL_GL_MAX_RENDERBUFFER_SIZE:
MOZ_ASSERT(mMaxRenderbufferSize > 0);
*params = mMaxRenderbufferSize;
break;
case LOCAL_GL_VIEWPORT:
for (size_t i = 0; i < 4; i++) {
params[i] = mViewportRect[i];
}
break;
case LOCAL_GL_SCISSOR_BOX:
for (size_t i = 0; i < 4; i++) {
params[i] = mScissorRect[i];
}
break;
default:
raw_fGetIntegerv(pname, params);
break;
}
}
void GLContext::fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type, GLvoid* pixels) {
BeforeGLReadCall();
bool didReadPixels = false;
if (mScreen) {
didReadPixels =
mScreen->ReadPixels(x, y, width, height, format, type, pixels);
}
if (!didReadPixels) {
raw_fReadPixels(x, y, width, height, format, type, pixels);
}
AfterGLReadCall();
// Check if GL is giving back 1.0 alpha for
// RGBA reads to RGBA images from no-alpha buffers.
#ifdef XP_MACOSX
if (WorkAroundDriverBugs() && Vendor() == gl::GLVendor::NVIDIA &&
format == LOCAL_GL_RGBA && type == LOCAL_GL_UNSIGNED_BYTE &&
!IsCoreProfile() && width && height) {
GLint alphaBits = 0;
fGetIntegerv(LOCAL_GL_ALPHA_BITS, &alphaBits);
if (!alphaBits) {
const uint32_t alphaMask = 0xff000000;
uint32_t* itr = (uint32_t*)pixels;
uint32_t testPixel = *itr;
if ((testPixel & alphaMask) != alphaMask) {
// We need to set the alpha channel to 1.0 manually.
uint32_t* itrEnd =
itr + width * height; // Stride is guaranteed to be width*4.
for (; itr != itrEnd; itr++) {
*itr |= alphaMask;
}
}
}
}
#endif
}
void GLContext::fDeleteFramebuffers(GLsizei n, const GLuint* names) {
if (mScreen) {
// Notify mScreen which framebuffers we're deleting.
// Otherwise, we will get framebuffer binding mispredictions.
for (int i = 0; i < n; i++) {
mScreen->DeletingFB(names[i]);
}
}
// Avoid crash by flushing before glDeleteFramebuffers. See bug 1194923.
if (mNeedsFlushBeforeDeleteFB) {
fFlush();
}
if (n == 1 && *names == 0) {
// Deleting framebuffer 0 causes hangs on the DROID. See bug 623228.
} else {
raw_fDeleteFramebuffers(n, names);
}
TRACKING_CONTEXT(DeletedFramebuffers(this, n, names));
}
#ifdef MOZ_WIDGET_ANDROID
/**
* Conservatively estimate whether there is enough available
* contiguous virtual address space to map a newly allocated texture.
*/
static bool WillTextureMapSucceed(GLsizei width, GLsizei height, GLenum format,
GLenum type) {
bool willSucceed = false;
// Some drivers leave large gaps between textures, so require
// there to be double the actual size of the texture available.
size_t size = width * height * GetBytesPerTexel(format, type) * 2;
void* p = mmap(nullptr, size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (p != MAP_FAILED) {
willSucceed = true;
munmap(p, size);
}
return willSucceed;
}
#endif // MOZ_WIDGET_ANDROID
void GLContext::fTexImage2D(GLenum target, GLint level, GLint internalformat,
GLsizei width, GLsizei height, GLint border,
GLenum format, GLenum type, const GLvoid* pixels) {
if (!IsTextureSizeSafeToPassToDriver(target, width, height)) {
// pass wrong values to cause the GL to generate GL_INVALID_VALUE.
// See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver.
level = -1;
width = -1;
height = -1;
border = -1;
}
#if MOZ_WIDGET_ANDROID
if (mTextureAllocCrashesOnMapFailure) {
// We have no way of knowing whether this texture already has
// storage allocated for it, and therefore whether this check
// is necessary. We must therefore assume it does not and
// always perform the check.
if (!WillTextureMapSucceed(width, height, internalformat, type)) {
return;
}
}
#endif
raw_fTexImage2D(target, level, internalformat, width, height, border, format,
type, pixels);
}
GLuint GLContext::GetDrawFB() {
if (mScreen) return mScreen->GetDrawFB();
GLuint ret = 0;
GetUIntegerv(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT, &ret);
return ret;
}
GLuint GLContext::GetReadFB() {
if (mScreen) return mScreen->GetReadFB();
GLenum bindEnum = IsSupported(GLFeature::split_framebuffer)
? LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT
: LOCAL_GL_FRAMEBUFFER_BINDING;
GLuint ret = 0;
GetUIntegerv(bindEnum, &ret);
return ret;
}
GLuint GLContext::GetFB() {
if (mScreen) {
// This has a very important extra assert that checks that we're
// not accidentally ignoring a situation where the draw and read
// FBs differ.
return mScreen->GetFB();
}
GLuint ret = 0;
GetUIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &ret);
return ret;
}
bool GLContext::InitOffscreen(const gfx::IntSize& size,
const SurfaceCaps& caps) {
if (!CreateScreenBuffer(size, caps)) return false;
if (!MakeCurrent()) {
return false;
}
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
fScissor(0, 0, size.width, size.height);
fViewport(0, 0, size.width, size.height);
mCaps = mScreen->mCaps;
MOZ_ASSERT(!mCaps.any);
return true;
}
bool GLContext::IsDrawingToDefaultFramebuffer() {
return Screen()->IsDrawFramebufferDefault();
}
GLuint CreateTexture(GLContext* aGL, GLenum aInternalFormat, GLenum aFormat,
GLenum aType, const gfx::IntSize& aSize, bool linear) {
GLuint tex = 0;
aGL->fGenTextures(1, &tex);
ScopedBindTexture autoTex(aGL, tex);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER,
linear ? LOCAL_GL_LINEAR : LOCAL_GL_NEAREST);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER,
linear ? LOCAL_GL_LINEAR : LOCAL_GL_NEAREST);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S,
LOCAL_GL_CLAMP_TO_EDGE);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T,
LOCAL_GL_CLAMP_TO_EDGE);
aGL->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, aInternalFormat, aSize.width,
aSize.height, 0, aFormat, aType, nullptr);
return tex;
}
GLuint CreateTextureForOffscreen(GLContext* aGL, const GLFormats& aFormats,
const gfx::IntSize& aSize) {
MOZ_ASSERT(aFormats.color_texInternalFormat);
MOZ_ASSERT(aFormats.color_texFormat);
MOZ_ASSERT(aFormats.color_texType);
GLenum internalFormat = aFormats.color_texInternalFormat;
GLenum unpackFormat = aFormats.color_texFormat;
GLenum unpackType = aFormats.color_texType;
if (aGL->IsANGLE()) {
MOZ_ASSERT(internalFormat == LOCAL_GL_RGBA);
MOZ_ASSERT(unpackFormat == LOCAL_GL_RGBA);
MOZ_ASSERT(unpackType == LOCAL_GL_UNSIGNED_BYTE);
internalFormat = LOCAL_GL_BGRA_EXT;
unpackFormat = LOCAL_GL_BGRA_EXT;
}
return CreateTexture(aGL, internalFormat, unpackFormat, unpackType, aSize);
}
uint32_t GetBytesPerTexel(GLenum format, GLenum type) {
// If there is no defined format or type, we're not taking up any memory
if (!format || !type) {
return 0;
}
if (format == LOCAL_GL_DEPTH_COMPONENT) {
if (type == LOCAL_GL_UNSIGNED_SHORT)
return 2;
else if (type == LOCAL_GL_UNSIGNED_INT)
return 4;
} else if (format == LOCAL_GL_DEPTH_STENCIL) {
if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT) return 4;
}
if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT ||
type == LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV) {
uint32_t multiplier = type == LOCAL_GL_UNSIGNED_BYTE ? 1 : 4;
switch (format) {
case LOCAL_GL_ALPHA:
case LOCAL_GL_LUMINANCE:
return 1 * multiplier;
case LOCAL_GL_LUMINANCE_ALPHA:
return 2 * multiplier;
case LOCAL_GL_RGB:
return 3 * multiplier;
case LOCAL_GL_RGBA:
case LOCAL_GL_BGRA_EXT:
return 4 * multiplier;
default:
break;
}
} else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 ||
type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 ||
type == LOCAL_GL_UNSIGNED_SHORT_5_6_5 ||
type == LOCAL_GL_UNSIGNED_SHORT) {
return 2;
}
gfxCriticalError() << "Unknown texture type " << type << " or format "
<< format;
return 0;
}
bool GLContext::MakeCurrent(bool aForce) const {
if (MOZ_UNLIKELY(IsContextLost())) return false;
if (MOZ_LIKELY(!aForce)) {
bool isCurrent;
if (mUseTLSIsCurrent) {
isCurrent = (sCurrentContext.get() == reinterpret_cast<uintptr_t>(this));
} else {
isCurrent = IsCurrentImpl();
}
if (MOZ_LIKELY(isCurrent)) {
MOZ_ASSERT(IsCurrentImpl() ||
!MakeCurrentImpl()); // Might have lost context.
return true;
}
}
if (!MakeCurrentImpl()) return false;
sCurrentContext.set(reinterpret_cast<uintptr_t>(this));
return true;
}
void GLContext::ResetSyncCallCount(const char* resetReason) const {
if (ShouldSpew()) {
printf_stderr("On %s, mSyncGLCallCount = %" PRIu64 "\n", resetReason,
mSyncGLCallCount);
}
mSyncGLCallCount = 0;
}
// -
bool CheckContextLost(const GLContext* const gl) {
return gl->CheckContextLost();
}
// -
GLenum GLContext::GetError() const {
if (mContextLost) return LOCAL_GL_CONTEXT_LOST;
if (mImplicitMakeCurrent) {
(void)MakeCurrent();
}
const auto fnGetError = [&]() {
const auto ret = mSymbols.fGetError();
if (ret == LOCAL_GL_CONTEXT_LOST) {
OnContextLostError();
mTopError = ret; // Promote to top!
}
return ret;
};
auto ret = fnGetError();
{
auto flushedErr = ret;
uint32_t i = 1;
while (flushedErr && !mContextLost) {
if (i == 100) {
gfxCriticalError() << "Flushing glGetError still "
<< gfx::hexa(flushedErr) << " after " << i
<< " calls.";
break;
}
flushedErr = fnGetError();
i += 1;
}
}
if (mTopError) {
ret = mTopError;
mTopError = 0;
}
if (mDebugFlags & DebugFlagTrace) {
const auto errStr = GLErrorToString(ret);
printf_stderr("[gl:%p] GetError() -> %s\n", this, errStr.c_str());
}
return ret;
}
GLenum GLContext::fGetGraphicsResetStatus() const {
OnSyncCall();
GLenum ret = 0;
if (mSymbols.fGetGraphicsResetStatus) {
if (mImplicitMakeCurrent) {
(void)MakeCurrent();
}
ret = mSymbols.fGetGraphicsResetStatus();
} else {
if (!MakeCurrent(true)) {
ret = LOCAL_GL_UNKNOWN_CONTEXT_RESET_ARB;
}
}
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] GetGraphicsResetStatus() -> 0x%04x\n", this, ret);
}
return ret;
}
void GLContext::OnContextLostError() const {
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] CONTEXT_LOST\n", this);
}
mContextLost = true;
}
// --
/*static*/ std::string GLContext::GLErrorToString(const GLenum err) {
switch (err) {
case LOCAL_GL_NO_ERROR:
return "GL_NO_ERROR";
case LOCAL_GL_INVALID_ENUM:
return "GL_INVALID_ENUM";
case LOCAL_GL_INVALID_VALUE:
return "GL_INVALID_VALUE";
case LOCAL_GL_INVALID_OPERATION:
return "GL_INVALID_OPERATION";
case LOCAL_GL_STACK_OVERFLOW:
return "GL_STACK_OVERFLOW";
case LOCAL_GL_STACK_UNDERFLOW:
return "GL_STACK_UNDERFLOW";
case LOCAL_GL_OUT_OF_MEMORY:
return "GL_OUT_OF_MEMORY";
case LOCAL_GL_TABLE_TOO_LARGE:
return "GL_TABLE_TOO_LARGE";
case LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION:
return "GL_INVALID_FRAMEBUFFER_OPERATION";
case LOCAL_GL_CONTEXT_LOST:
return "GL_CONTEXT_LOST";
}
const nsPrintfCString hex("<enum 0x%04x>", err);
return hex.BeginReading();
}
// --
void GLContext::BeforeGLCall_Debug(const char* const funcName) const {
MOZ_ASSERT(mDebugFlags);
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] > %s\n", this, funcName);
}
MOZ_ASSERT(!mDebugErrorScope);
mDebugErrorScope.reset(new LocalErrorScope(*this));
}
void GLContext::AfterGLCall_Debug(const char* const funcName) const {
MOZ_ASSERT(mDebugFlags);
// calling fFinish() immediately after every GL call makes sure that if this
// GL command crashes, the stack trace will actually point to it. Otherwise,
// OpenGL being an asynchronous API, stack traces tend to be meaningless
mSymbols.fFinish();
const auto err = mDebugErrorScope->GetError();
mDebugErrorScope = nullptr;
if (!mTopError) {
mTopError = err;
}
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] < %s [%s]\n", this, funcName,
GLErrorToString(err).c_str());
}
if (err && !mLocalErrorScopeStack.size()) {
printf_stderr("[gl:%p] %s: Generated unexpected %s error.\n", this,
funcName, GLErrorToString(err).c_str());
if (mDebugFlags & DebugFlagAbortOnError) {
MOZ_CRASH(
"Unexpected error with MOZ_GL_DEBUG_ABORT_ON_ERROR. (Run"
" with MOZ_GL_DEBUG_ABORT_ON_ERROR=0 to disable)");
}
}
}
/*static*/ void GLContext::OnImplicitMakeCurrentFailure(
const char* const funcName) {
gfxCriticalError() << "Ignoring call to " << funcName << " with failed"
<< " mImplicitMakeCurrent.";
}
} /* namespace gl */
} /* namespace mozilla */
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