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GLContext.cpp
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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
#if defined(XP_LINUX) && !defined(ANDROID)
// For MesaMemoryLeakWorkaround
# include <dlfcn.h>
# include <link.h>
#endif
#include "GLBlitHelper.h"
#include "GLReadTexImageHelper.h"
#include "GLScreenBuffer.h"
#include "gfxCrashReporterUtils.h"
#include "gfxEnv.h"
#include "gfxUtils.h"
#include "GLContextProvider.h"
#include "GLLibraryLoader.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 "mozilla/StaticPrefs_gfx.h"
#include "mozilla/StaticPrefs_gl.h"
#include "mozilla/IntegerPrintfMacros.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/layers/BuildConstants.h"
#include "mozilla/layers/TextureForwarder.h" // for LayersIPCChannel
#include "OGLShaderProgram.h" // for ShaderProgramType
#include "mozilla/DebugOnly.h"
#include "mozilla/Maybe.h"
#ifdef XP_MACOSX
# include <CoreServices/CoreServices.h>
#endif
#ifdef MOZ_WIDGET_ANDROID
# include "mozilla/jni/Utils.h"
#endif
namespace mozilla {
namespace gl {
using namespace mozilla::gfx;
using namespace mozilla::layers;
// Zero-initialized after init().
MOZ_THREAD_LOCAL(const GLContext*) 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, {{ "gl" #x }} }
#define CORE_EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x, "gl" #x #y, "gl" #x #z }} }
#define EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x #y, "gl" #x #z }} }
#define EXT_SYMBOL3(x,y,z,w) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x #y, "gl" #x #z, "gl" #x #w }} }
#define END_SYMBOLS { 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_multiview",
"GL_ANGLE_provoking_vertex",
"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_provoking_vertex",
"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_CHROMIUM_color_buffer_float_rgb",
"GL_CHROMIUM_color_buffer_float_rgba",
"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_float_blend",
"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_provoking_vertex",
"GL_EXT_read_format_bgra",
"GL_EXT_robustness",
"GL_EXT_sRGB",
"GL_EXT_sRGB_write_control",
"GL_EXT_shader_texture_lod",
"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_norm16",
"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_parallel_shader_compile",
"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_draw_buffers_indexed",
"GL_OES_element_index_uint",
"GL_OES_fbo_render_mipmap",
"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",
"GL_OVR_multiview2"};
static bool ShouldUseTLSIsCurrent(bool useTLSIsCurrent) {
if (StaticPrefs::gl_use_tls_is_current() == 0) {
return useTLSIsCurrent;
}
return StaticPrefs::gl_use_tls_is_current() > 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_BUILD
if (gfxEnv::MOZ_GL_DEBUG()) {
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::MOZ_GL_DEBUG_VERBOSE()) {
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& env = gfxEnv::MOZ_GL_DEBUG_ABORT_ON_ERROR();
if (env.as_str == "0") {
abortOnError = false;
}
}
if (abortOnError) {
debugFlags |= GLContext::DebugFlagAbortOnError;
}
#endif
return debugFlags;
}
GLContext::GLContext(const GLContextDesc& desc, GLContext* sharedContext,
bool useTLSIsCurrent)
: mDesc(desc),
mUseTLSIsCurrent(ShouldUseTLSIsCurrent(useTLSIsCurrent)),
mDebugFlags(ChooseDebugFlags(mDesc.flags)),
mSharedContext(sharedContext),
mOwningThreadId(Some(PlatformThread::CurrentId())),
mWorkAroundDriverBugs(
StaticPrefs::gfx_work_around_driver_bugs_AtStartup()) {}
GLContext::~GLContext() {
NS_ASSERTION(
IsDestroyed(),
"GLContext implementation must call MarkDestroyed in destructor!");
#ifdef MOZ_GL_DEBUG_BUILD
if (mSharedContext) {
GLContext* tip = mSharedContext;
while (tip->mSharedContext) tip = tip->mSharedContext;
tip->SharedContextDestroyed(this);
tip->ReportOutstandingNames();
} else {
ReportOutstandingNames();
}
#endif
// Ensure we clear sCurrentContext if we were the last context set and avoid
// the memory getting reused.
if (sCurrentContext.init() && sCurrentContext.get() == this) {
sCurrentContext.set(nullptr);
}
}
/*static*/
void GLContext::InvalidateCurrentContext() {
if (sCurrentContext.init()) {
sCurrentContext.set(nullptr);
}
}
/*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);
}
bool GLContext::Init() {
MOZ_RELEASE_ASSERT(!mSymbols.fBindFramebuffer,
"GFX: GLContext::Init should only be called once.");
ScopedGfxFeatureReporter reporter("GL Context");
if (!InitImpl()) {
// 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 LoadSymbolsWithDesc(const SymbolLoader& loader,
const SymLoadStruct* list, const char* desc) {
const auto warnOnFailure = bool(desc);
if (loader.LoadSymbols(list, warnOnFailure)) 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 SymbolLoader& loader,
const SymLoadStruct* list, GLExtensions ext) {
const char* extName = sExtensionNames[size_t(ext)];
if (!LoadSymbolsWithDesc(loader, list, extName)) {
MarkExtensionUnsupported(ext);
return false;
}
return true;
};
bool GLContext::LoadFeatureSymbols(const SymbolLoader& loader,
const SymLoadStruct* list,
GLFeature feature) {
const char* featureName = GetFeatureName(feature);
if (!LoadSymbolsWithDesc(loader, list, featureName)) {
MarkUnsupported(feature);
return false;
}
return true;
};
bool GLContext::InitImpl() {
if (!MakeCurrent(true)) return false;
const auto loader = GetSymbolLoader();
if (!loader) return false;
const auto fnLoadSymbols = [&](const SymLoadStruct* const list,
const char* const desc) {
return LoadSymbolsWithDesc(*loader, list, desc);
};
// clang-format off
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fActiveTexture, {{ "glActiveTexture", "glActiveTextureARB" }} },
{ (PRFuncPtr*) &mSymbols.fAttachShader, {{ "glAttachShader", "glAttachShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fBindAttribLocation, {{ "glBindAttribLocation", "glBindAttribLocationARB" }} },
{ (PRFuncPtr*) &mSymbols.fBindBuffer, {{ "glBindBuffer", "glBindBufferARB" }} },
{ (PRFuncPtr*) &mSymbols.fBindTexture, {{ "glBindTexture", "glBindTextureARB" }} },
{ (PRFuncPtr*) &mSymbols.fBlendColor, {{ "glBlendColor" }} },
{ (PRFuncPtr*) &mSymbols.fBlendEquation, {{ "glBlendEquation" }} },
{ (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, {{ "glBlendEquationSeparate", "glBlendEquationSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fBlendFunc, {{ "glBlendFunc" }} },
{ (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, {{ "glBlendFuncSeparate", "glBlendFuncSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fBufferData, {{ "glBufferData" }} },
{ (PRFuncPtr*) &mSymbols.fBufferSubData, {{ "glBufferSubData" }} },
{ (PRFuncPtr*) &mSymbols.fClear, {{ "glClear" }} },
{ (PRFuncPtr*) &mSymbols.fClearColor, {{ "glClearColor" }} },
{ (PRFuncPtr*) &mSymbols.fClearStencil, {{ "glClearStencil" }} },
{ (PRFuncPtr*) &mSymbols.fColorMask, {{ "glColorMask" }} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage2D, {{ "glCompressedTexImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage2D, {{ "glCompressedTexSubImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fCullFace, {{ "glCullFace" }} },
{ (PRFuncPtr*) &mSymbols.fDetachShader, {{ "glDetachShader", "glDetachShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fDepthFunc, {{ "glDepthFunc" }} },
{ (PRFuncPtr*) &mSymbols.fDepthMask, {{ "glDepthMask" }} },
{ (PRFuncPtr*) &mSymbols.fDisable, {{ "glDisable" }} },
{ (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, {{ "glDisableVertexAttribArray", "glDisableVertexAttribArrayARB" }} },
{ (PRFuncPtr*) &mSymbols.fDrawArrays, {{ "glDrawArrays" }} },
{ (PRFuncPtr*) &mSymbols.fDrawElements, {{ "glDrawElements" }} },
{ (PRFuncPtr*) &mSymbols.fEnable, {{ "glEnable" }} },
{ (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, {{ "glEnableVertexAttribArray", "glEnableVertexAttribArrayARB" }} },
{ (PRFuncPtr*) &mSymbols.fFinish, {{ "glFinish" }} },
{ (PRFuncPtr*) &mSymbols.fFlush, {{ "glFlush" }} },
{ (PRFuncPtr*) &mSymbols.fFrontFace, {{ "glFrontFace" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveAttrib, {{ "glGetActiveAttrib", "glGetActiveAttribARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniform, {{ "glGetActiveUniform", "glGetActiveUniformARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetAttachedShaders, {{ "glGetAttachedShaders", "glGetAttachedShadersARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetAttribLocation, {{ "glGetAttribLocation", "glGetAttribLocationARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetIntegerv, {{ "glGetIntegerv" }} },
{ (PRFuncPtr*) &mSymbols.fGetFloatv, {{ "glGetFloatv" }} },
{ (PRFuncPtr*) &mSymbols.fGetBooleanv, {{ "glGetBooleanv" }} },
{ (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, {{ "glGetBufferParameteriv", "glGetBufferParameterivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetError, {{ "glGetError" }} },
{ (PRFuncPtr*) &mSymbols.fGetProgramiv, {{ "glGetProgramiv", "glGetProgramivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, {{ "glGetProgramInfoLog", "glGetProgramInfoLogARB" }} },
{ (PRFuncPtr*) &mSymbols.fTexParameteri, {{ "glTexParameteri" }} },
{ (PRFuncPtr*) &mSymbols.fTexParameteriv, {{ "glTexParameteriv" }} },
{ (PRFuncPtr*) &mSymbols.fTexParameterf, {{ "glTexParameterf" }} },
{ (PRFuncPtr*) &mSymbols.fGetString, {{ "glGetString" }} },
{ (PRFuncPtr*) &mSymbols.fGetTexParameterfv, {{ "glGetTexParameterfv" }} },
{ (PRFuncPtr*) &mSymbols.fGetTexParameteriv, {{ "glGetTexParameteriv" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformfv, {{ "glGetUniformfv", "glGetUniformfvARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformiv, {{ "glGetUniformiv", "glGetUniformivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformLocation, {{ "glGetUniformLocation", "glGetUniformLocationARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, {{ "glGetVertexAttribfv", "glGetVertexAttribfvARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, {{ "glGetVertexAttribiv", "glGetVertexAttribivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribPointerv, {{ "glGetVertexAttribPointerv" }} },
{ (PRFuncPtr*) &mSymbols.fHint, {{ "glHint" }} },
{ (PRFuncPtr*) &mSymbols.fIsBuffer, {{ "glIsBuffer", "glIsBufferARB" }} },
{ (PRFuncPtr*) &mSymbols.fIsEnabled, {{ "glIsEnabled" }} },
{ (PRFuncPtr*) &mSymbols.fIsProgram, {{ "glIsProgram", "glIsProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fIsShader, {{ "glIsShader", "glIsShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fIsTexture, {{ "glIsTexture", "glIsTextureARB" }} },
{ (PRFuncPtr*) &mSymbols.fLineWidth, {{ "glLineWidth" }} },
{ (PRFuncPtr*) &mSymbols.fLinkProgram, {{ "glLinkProgram", "glLinkProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fPixelStorei, {{ "glPixelStorei" }} },
{ (PRFuncPtr*) &mSymbols.fPolygonOffset, {{ "glPolygonOffset" }} },
{ (PRFuncPtr*) &mSymbols.fReadPixels, {{ "glReadPixels" }} },
{ (PRFuncPtr*) &mSymbols.fSampleCoverage, {{ "glSampleCoverage" }} },
{ (PRFuncPtr*) &mSymbols.fScissor, {{ "glScissor" }} },
{ (PRFuncPtr*) &mSymbols.fStencilFunc, {{ "glStencilFunc" }} },
{ (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, {{ "glStencilFuncSeparate", "glStencilFuncSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fStencilMask, {{ "glStencilMask" }} },
{ (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, {{ "glStencilMaskSeparate", "glStencilMaskSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fStencilOp, {{ "glStencilOp" }} },
{ (PRFuncPtr*) &mSymbols.fStencilOpSeparate, {{ "glStencilOpSeparate", "glStencilOpSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fTexImage2D, {{ "glTexImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fTexSubImage2D, {{ "glTexSubImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1f, {{ "glUniform1f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1fv, {{ "glUniform1fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1i, {{ "glUniform1i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1iv, {{ "glUniform1iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2f, {{ "glUniform2f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2fv, {{ "glUniform2fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2i, {{ "glUniform2i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2iv, {{ "glUniform2iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3f, {{ "glUniform3f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3fv, {{ "glUniform3fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3i, {{ "glUniform3i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3iv, {{ "glUniform3iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4f, {{ "glUniform4f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4fv, {{ "glUniform4fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4i, {{ "glUniform4i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4iv, {{ "glUniform4iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, {{ "glUniformMatrix2fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, {{ "glUniformMatrix3fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, {{ "glUniformMatrix4fv" }} },
{ (PRFuncPtr*) &mSymbols.fUseProgram, {{ "glUseProgram" }} },
{ (PRFuncPtr*) &mSymbols.fValidateProgram, {{ "glValidateProgram" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, {{ "glVertexAttribPointer" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1f, {{ "glVertexAttrib1f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2f, {{ "glVertexAttrib2f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3f, {{ "glVertexAttrib3f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4f, {{ "glVertexAttrib4f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, {{ "glVertexAttrib1fv" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, {{ "glVertexAttrib2fv" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, {{ "glVertexAttrib3fv" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, {{ "glVertexAttrib4fv" }} },
{ (PRFuncPtr*) &mSymbols.fViewport, {{ "glViewport" }} },
{ (PRFuncPtr*) &mSymbols.fCompileShader, {{ "glCompileShader" }} },
{ (PRFuncPtr*) &mSymbols.fCopyTexImage2D, {{ "glCopyTexImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, {{ "glCopyTexSubImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fGetShaderiv, {{ "glGetShaderiv" }} },
{ (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, {{ "glGetShaderInfoLog" }} },
{ (PRFuncPtr*) &mSymbols.fGetShaderSource, {{ "glGetShaderSource" }} },
{ (PRFuncPtr*) &mSymbols.fShaderSource, {{ "glShaderSource" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, {{ "glVertexAttribPointer" }} },
{ (PRFuncPtr*) &mSymbols.fGenBuffers, {{ "glGenBuffers", "glGenBuffersARB" }} },
{ (PRFuncPtr*) &mSymbols.fGenTextures, {{ "glGenTextures" }} },
{ (PRFuncPtr*) &mSymbols.fCreateProgram, {{ "glCreateProgram", "glCreateProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fCreateShader, {{ "glCreateShader", "glCreateShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteBuffers, {{ "glDeleteBuffers", "glDeleteBuffersARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteTextures, {{ "glDeleteTextures", "glDeleteTexturesARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteProgram, {{ "glDeleteProgram", "glDeleteProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteShader, {{ "glDeleteShader", "glDeleteShaderARB" }} },
END_SYMBOLS
};
// clang-format on
if (!fnLoadSymbols(coreSymbols, "GL")) return false;
{
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fGetGraphicsResetStatus,
{{"glGetGraphicsResetStatus", "glGetGraphicsResetStatusARB",
"glGetGraphicsResetStatusKHR", "glGetGraphicsResetStatusEXT"}}},
END_SYMBOLS};
(void)fnLoadSymbols(symbols, nullptr);
// We need to call the fGetError symbol directly here because if there is an
// unflushed reset status, we don't want to mark the context as lost. That
// would prevent us from recovering.
auto err = mSymbols.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 auto* const versionRawStr = (const char*)fGetString(LOCAL_GL_VERSION);
if (!versionRawStr || !*versionRawStr) {
// This can happen with Pernosco.
NS_WARNING("Empty GL version string");
return false;
}
const std::string versionStr = versionRawStr;
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 (!fnLoadSymbols(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 (!fnLoadSymbols(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",
"Mali-T",
"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",
"Samsung Xclipse",
"Unknown"};
mRenderer = GLRenderer::Other;
for (size_t i = 0; i < size_t(GLRenderer::Other); ++i) {
if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) {
mRenderer = GLRenderer(i);
break;
}
}
{
const auto versionStr = (const char*)fGetString(LOCAL_GL_VERSION);
if (strstr(versionStr, "Mesa")) {
mIsMesa = true;
}
}
const auto Once = []() {
static bool did = false;
if (did) return false;
did = true;
return true;
};
bool printRenderer = ShouldSpew();
printRenderer |= (kIsDebug && Once());
if (printRenderer) {
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)]);
printf_stderr("mIsMesa: %i\n", int(mIsMesa));
}
////////////////
if (mVersion >= 300) { // Both GL3 and ES3.
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fGetStringi, {{"glGetStringi"}}}, END_SYMBOLS};
if (!fnLoadSymbols(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 (Renderer() == GLRenderer::AndroidEmulator) {
// Bug 1665300
mSymbols.fGetGraphicsResetStatus = 0;
}
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);
}
if (IsMesa()) {
// DrawElementsInstanced hangs the driver.
MarkUnsupported(GLFeature::robust_buffer_access_behavior);
}
if (Renderer() == GLRenderer::SamsungXclipse) {
MarkUnsupported(GLFeature::invalidate_framebuffer);
}
}
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 = [&](const SymLoadStruct* list,
GLFeature feature) {
return this->LoadFeatureSymbols(*loader, 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 (!fnLoadSymbols(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(*loader);
////////////////////////////////////////////////////////////////////////////
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);
if (mWorkAroundDriverBugs) {
int maxTexSize = INT32_MAX;
int maxCubeSize = INT32_MAX;
#ifdef XP_MACOSX
// https://bugzilla.mozilla.org/show_bug.cgi?id=1544446
// Mojave exposes 16k textures, but gives FRAMEBUFFER_UNSUPPORTED for any
// 16k*16k FB except rgba8 without depth/stencil.
// The max supported sizes changes based on involved formats.
// (RGBA32F more restrictive than RGBA16F)
maxTexSize = 8192;
#endif
#ifdef MOZ_X11
if (mVendor == GLVendor::Nouveau) {
// see bug 814716. Clamp MaxCubeMapTextureSize at 2K for Nouveau.
maxCubeSize = 2048;
} else if (mVendor == GLVendor::Intel) {
// Bug 1199923. Driver seems to report a larger max size than
// actually supported.
maxTexSize = mMaxTextureSize / 2;
}
// 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 (Renderer() == GLRenderer::AdrenoTM420) {
// see bug 1194923. Calling glFlush before glDeleteFramebuffers
// prevents occasional driver crash.
mNeedsFlushBeforeDeleteFB = true;
}
// -
const auto fnLimit = [&](int* const driver, const int limit) {
if (*driver > limit) {
*driver = limit;
mNeedsTextureSizeChecks = true;
}
};
fnLimit(&mMaxTextureSize, maxTexSize);
fnLimit(&mMaxRenderbufferSize, maxTexSize);
maxCubeSize = std::min(maxCubeSize, maxTexSize);
fnLimit(&mMaxCubeMapTextureSize, maxCubeSize);
}
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);
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 SymbolLoader& loader) {
const auto fnLoadForExt = [&](const SymLoadStruct* list, GLExtensions ext) {
return this->LoadExtSymbols(loader, list, ext);
};
const auto fnLoadForFeature = [&](const SymLoadStruct* list,
GLFeature feature) {
return this->LoadFeatureSymbols(loader, list, feature);
};
const auto fnLoadFeatureByCore = [&](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);
}