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GLContext.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 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 <algorithm>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "GLContext.h"
#include "GLBlitHelper.h"
#include "GLBlitTextureImageHelper.h"
#include "GLReadTexImageHelper.h"
#include "gfxCrashReporterUtils.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 "SurfaceStream.h"
#include "GfxTexturesReporter.h"
#include "TextureGarbageBin.h"
#include "gfx2DGlue.h"
#include "gfxPrefs.h"
#include "OGLShaderProgram.h" // for ShaderProgramType
#include "mozilla/DebugOnly.h"
#ifdef XP_MACOSX
#include <CoreServices/CoreServices.h>
#include "gfxColor.h"
#endif
#if defined(MOZ_WIDGET_COCOA)
#include "nsCocoaFeatures.h"
#endif
using namespace mozilla::gfx;
using namespace mozilla::layers;
namespace mozilla {
namespace gl {
#ifdef DEBUG
unsigned GLContext::sCurrentGLContextTLS = -1;
#endif
uint32_t GLContext::sDebugMode = 0;
#define MAX_SYMBOL_LENGTH 128
#define MAX_SYMBOL_NAMES 5
// should match the order of GLExtensions, and be null-terminated.
static const char *sExtensionNames[] = {
"GL_EXT_framebuffer_object",
"GL_ARB_framebuffer_object",
"GL_ARB_texture_rectangle",
"GL_EXT_bgra",
"GL_EXT_texture_format_BGRA8888",
"GL_OES_depth24",
"GL_OES_depth32",
"GL_OES_stencil8",
"GL_OES_texture_npot",
"GL_ARB_depth_texture",
"GL_OES_depth_texture",
"GL_OES_packed_depth_stencil",
"GL_IMG_read_format",
"GL_EXT_read_format_bgra",
"GL_APPLE_client_storage",
"GL_APPLE_texture_range",
"GL_ARB_texture_non_power_of_two",
"GL_ARB_pixel_buffer_object",
"GL_ARB_ES2_compatibility",
"GL_ARB_ES3_compatibility",
"GL_OES_texture_float",
"GL_OES_texture_float_linear",
"GL_ARB_texture_float",
"GL_OES_texture_half_float",
"GL_OES_texture_half_float_linear",
"GL_NV_half_float",
"GL_EXT_color_buffer_float",
"GL_EXT_color_buffer_half_float",
"GL_ARB_color_buffer_float",
"GL_EXT_unpack_subimage",
"GL_OES_standard_derivatives",
"GL_EXT_texture_filter_anisotropic",
"GL_EXT_texture_compression_s3tc",
"GL_EXT_texture_compression_dxt1",
"GL_ANGLE_texture_compression_dxt3",
"GL_ANGLE_texture_compression_dxt5",
"GL_AMD_compressed_ATC_texture",
"GL_IMG_texture_compression_pvrtc",
"GL_EXT_framebuffer_blit",
"GL_ANGLE_framebuffer_blit",
"GL_EXT_framebuffer_multisample",
"GL_ANGLE_framebuffer_multisample",
"GL_OES_rgb8_rgba8",
"GL_ARB_robustness",
"GL_EXT_robustness",
"GL_ARB_sync",
"GL_OES_EGL_image",
"GL_OES_EGL_sync",
"GL_OES_EGL_image_external",
"GL_EXT_packed_depth_stencil",
"GL_OES_element_index_uint",
"GL_OES_vertex_array_object",
"GL_ARB_vertex_array_object",
"GL_APPLE_vertex_array_object",
"GL_ARB_draw_buffers",
"GL_EXT_draw_buffers",
"GL_EXT_gpu_shader4",
"GL_EXT_blend_minmax",
"GL_ARB_draw_instanced",
"GL_EXT_draw_instanced",
"GL_NV_draw_instanced",
"GL_ARB_instanced_arrays",
"GL_NV_instanced_arrays",
"GL_ANGLE_instanced_arrays",
"GL_EXT_occlusion_query_boolean",
"GL_ARB_occlusion_query2",
"GL_EXT_transform_feedback",
"GL_NV_transform_feedback",
"GL_ANGLE_depth_texture",
"GL_EXT_sRGB",
"GL_EXT_texture_sRGB",
"GL_ARB_framebuffer_sRGB",
"GL_EXT_framebuffer_sRGB",
"GL_KHR_debug",
"GL_ARB_half_float_pixel",
"GL_EXT_frag_depth",
"GL_OES_compressed_ETC1_RGB8_texture",
"GL_EXT_draw_range_elements",
nullptr
};
static bool
ParseGLVersion(GLContext* gl, unsigned int* version)
{
GLenum error = gl->fGetError();
if (error != LOCAL_GL_NO_ERROR) {
MOZ_ASSERT(false, "An OpenGL error has been triggered before.");
return false;
}
/**
* B2G emulator bug work around: The emulator implements OpenGL ES 2.0 on
* OpenGL 3.2. The bug is that GetIntegerv(LOCAL_GL_{MAJOR,MINOR}_VERSION)
* returns OpenGL 3.2 instead of generating an error.
*/
if (!gl->IsGLES())
{
/**
* OpenGL 3.1 and OpenGL ES 3.0 both introduce GL_{MAJOR,MINOR}_VERSION
* with GetIntegerv. So we first try those constants even though we
* might not have an OpenGL context supporting them, has this is a
* better way than parsing GL_VERSION.
*/
GLint majorVersion = 0;
GLint minorVersion = 0;
gl->fGetIntegerv(LOCAL_GL_MAJOR_VERSION, &majorVersion);
gl->fGetIntegerv(LOCAL_GL_MINOR_VERSION, &minorVersion);
// If it's not an OpenGL (ES) 3.0 context, we will have an error
error = gl->fGetError();
if (error == LOCAL_GL_NO_ERROR &&
majorVersion > 0 &&
minorVersion >= 0)
{
*version = majorVersion * 100 + minorVersion * 10;
return true;
}
}
/**
* We were not able to use GL_{MAJOR,MINOR}_VERSION, so we parse
* GL_VERSION.
*
*
* OpenGL 2.x, 3.x, 4.x specifications:
* The VERSION and SHADING_LANGUAGE_VERSION strings are laid out as follows:
*
* <version number><space><vendor-specific information>
*
* The version number is either of the form major_number.minor_number or
* major_number.minor_number.release_number, where the numbers all have
* one or more digits.
*
*
* OpenGL ES 2.0, 3.0 specifications:
* The VERSION string is laid out as follows:
*
* "OpenGL ES N.M vendor-specific information"
*
* The version number is either of the form major_number.minor_number or
* major_number.minor_number.release_number, where the numbers all have
* one or more digits.
*
*
* Note:
* We don't care about release_number.
*/
const char* versionString = (const char*)gl->fGetString(LOCAL_GL_VERSION);
error = gl->fGetError();
if (error != LOCAL_GL_NO_ERROR) {
MOZ_ASSERT(false, "glGetString(GL_VERSION) has generated an error");
return false;
} else if (!versionString) {
MOZ_ASSERT(false, "glGetString(GL_VERSION) has returned 0");
return false;
}
const char kGLESVersionPrefix[] = "OpenGL ES ";
if (strncmp(versionString, kGLESVersionPrefix, strlen(kGLESVersionPrefix)) == 0) {
versionString += strlen(kGLESVersionPrefix);
}
const char* itr = versionString;
char* end = nullptr;
int majorVersion = (int)strtol(itr, &end, 10);
if (!end) {
MOZ_ASSERT(false, "Failed to parse the GL major version number.");
return false;
} else if (*end != '.') {
MOZ_ASSERT(false, "Failed to parse GL's major-minor version number separator.");
return false;
}
// we skip the '.' between the major and the minor version
itr = end + 1;
end = nullptr;
int minorVersion = (int)strtol(itr, &end, 10);
if (!end) {
MOZ_ASSERT(false, "Failed to parse GL's minor version number.");
return false;
}
if (majorVersion <= 0 || majorVersion >= 100) {
MOZ_ASSERT(false, "Invalid major version.");
return false;
} else if (minorVersion < 0 || minorVersion >= 10) {
MOZ_ASSERT(false, "Invalid minor version.");
return false;
}
*version = (unsigned int)(majorVersion * 100 + minorVersion * 10);
return true;
}
GLContext::GLContext(const SurfaceCaps& caps,
GLContext* sharedContext,
bool isOffscreen)
: mInitialized(false),
mIsOffscreen(isOffscreen),
mContextLost(false),
mVersion(0),
mProfile(ContextProfile::Unknown),
mVendor(GLVendor::Other),
mRenderer(GLRenderer::Other),
mHasRobustness(false),
#ifdef DEBUG
mGLError(LOCAL_GL_NO_ERROR),
#endif
mSharedContext(sharedContext),
mCaps(caps),
mScreen(nullptr),
mLockedSurface(nullptr),
mMaxTextureSize(0),
mMaxCubeMapTextureSize(0),
mMaxTextureImageSize(0),
mMaxRenderbufferSize(0),
mNeedsTextureSizeChecks(false),
mWorkAroundDriverBugs(true)
{
mOwningThread = NS_GetCurrentThread();
}
GLContext::~GLContext() {
NS_ASSERTION(IsDestroyed(), "GLContext implementation must call MarkDestroyed in destructor!");
#ifdef DEBUG
if (mSharedContext) {
GLContext *tip = mSharedContext;
while (tip->mSharedContext)
tip = tip->mSharedContext;
tip->SharedContextDestroyed(this);
tip->ReportOutstandingNames();
} else {
ReportOutstandingNames();
}
#endif
}
bool
GLContext::InitWithPrefix(const char *prefix, bool trygl)
{
ScopedGfxFeatureReporter reporter("GL Context");
if (mInitialized) {
reporter.SetSuccessful();
return true;
}
mWorkAroundDriverBugs = gfxPrefs::WorkAroundDriverBugs();
SymLoadStruct symbols[] = {
{ (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.fBindFramebuffer, { "BindFramebuffer", "BindFramebufferEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindRenderbuffer, { "BindRenderbuffer", "BindRenderbufferEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fCheckFramebufferStatus, { "CheckFramebufferStatus", "CheckFramebufferStatusEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFramebufferRenderbuffer, { "FramebufferRenderbuffer", "FramebufferRenderbufferEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fFramebufferTexture2D, { "FramebufferTexture2D", "FramebufferTexture2DEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenerateMipmap, { "GenerateMipmap", "GenerateMipmapEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetFramebufferAttachmentParameteriv, { "GetFramebufferAttachmentParameteriv", "GetFramebufferAttachmentParameterivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetRenderbufferParameteriv, { "GetRenderbufferParameteriv", "GetRenderbufferParameterivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsFramebuffer, { "IsFramebuffer", "IsFramebufferEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsRenderbuffer, { "IsRenderbuffer", "IsRenderbufferEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fRenderbufferStorage, { "RenderbufferStorage", "RenderbufferStorageEXT", 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.fGenFramebuffers, { "GenFramebuffers", "GenFramebuffersEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenRenderbuffers, { "GenRenderbuffers", "GenRenderbuffersEXT", 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 } },
{ (PRFuncPtr*) &mSymbols.fDeleteFramebuffers, { "DeleteFramebuffers", "DeleteFramebuffersEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteRenderbuffers, { "DeleteRenderbuffers", "DeleteRenderbuffersEXT", nullptr } },
{ nullptr, { nullptr } },
};
mInitialized = LoadSymbols(&symbols[0], trygl, prefix);
MakeCurrent();
if (mInitialized) {
unsigned int version = 0;
bool parseSuccess = ParseGLVersion(this, &version);
#ifdef DEBUG
printf_stderr("OpenGL version detected: %u\n", version);
printf_stderr("OpenGL vendor: %s\n", fGetString(LOCAL_GL_VENDOR));
printf_stderr("OpenGL renderer: %s\n", fGetString(LOCAL_GL_RENDERER));
#endif
if (version >= mVersion) {
mVersion = version;
} else if (parseSuccess) {
NS_WARNING("Parsed version less than expected.");
mInitialized = false;
}
}
// Load OpenGL ES 2.0 symbols, or desktop if we aren't using ES 2.
if (mInitialized) {
if (IsGLES()) {
SymLoadStruct symbols_ES2[] = {
{ (PRFuncPtr*) &mSymbols.fGetShaderPrecisionFormat, { "GetShaderPrecisionFormat", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClearDepthf, { "ClearDepthf", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDepthRangef, { "DepthRangef", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&symbols_ES2[0], trygl, prefix)) {
NS_ERROR("OpenGL ES 2.0 supported, but symbols could not be loaded.");
mInitialized = false;
}
} else {
SymLoadStruct symbols_desktop[] = {
{ (PRFuncPtr*) &mSymbols.fClearDepth, { "ClearDepth", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDepthRange, { "DepthRange", nullptr } },
{ (PRFuncPtr*) &mSymbols.fReadBuffer, { "ReadBuffer", nullptr } },
{ (PRFuncPtr*) &mSymbols.fMapBuffer, { "MapBuffer", nullptr } },
{ (PRFuncPtr*) &mSymbols.fUnmapBuffer, { "UnmapBuffer", nullptr } },
{ (PRFuncPtr*) &mSymbols.fPointParameterf, { "PointParameterf", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDrawBuffer, { "DrawBuffer", nullptr } },
// These functions are only used by Skia/GL in desktop mode.
// Other parts of Gecko should avoid using these
{ (PRFuncPtr*) &mSymbols.fDrawBuffers, { "DrawBuffers", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClientActiveTexture, { "ClientActiveTexture", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDisableClientState, { "DisableClientState", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEnableClientState, { "EnableClientState", nullptr } },
{ (PRFuncPtr*) &mSymbols.fLoadIdentity, { "LoadIdentity", nullptr } },
{ (PRFuncPtr*) &mSymbols.fLoadMatrixf, { "LoadMatrixf", nullptr } },
{ (PRFuncPtr*) &mSymbols.fMatrixMode, { "MatrixMode", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexGeni, { "TexGeni", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexGenf, { "TexGenf", nullptr } },
{ (PRFuncPtr*) &mSymbols.fTexGenfv, { "TexGenfv", nullptr } },
{ (PRFuncPtr*) &mSymbols.fVertexPointer, { "VertexPointer", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&symbols_desktop[0], trygl, prefix)) {
NS_ERROR("Desktop symbols failed to load.");
mInitialized = false;
}
}
}
const char *glVendorString = nullptr;
const char *glRendererString = nullptr;
if (mInitialized) {
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for vendor IDs
glVendorString = (const char *)fGetString(LOCAL_GL_VENDOR);
if (!glVendorString)
mInitialized = false;
const char *vendorMatchStrings[size_t(GLVendor::Other)] = {
"Intel",
"NVIDIA",
"ATI",
"Qualcomm",
"Imagination",
"nouveau",
"Vivante",
"VMware, Inc."
};
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
glRendererString = (const char *)fGetString(LOCAL_GL_RENDERER);
if (!glRendererString)
mInitialized = false;
const char *rendererMatchStrings[size_t(GLRenderer::Other)] = {
"Adreno 200",
"Adreno 205",
"Adreno (TM) 205",
"Adreno (TM) 320",
"PowerVR SGX 530",
"PowerVR SGX 540",
"NVIDIA Tegra",
"Android Emulator",
"Gallium 0.4 on llvmpipe"
};
mRenderer = GLRenderer::Other;
for (size_t i = 0; i < size_t(GLRenderer::Other); ++i) {
if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) {
mRenderer = GLRenderer(i);
break;
}
}
}
#ifdef DEBUG
if (PR_GetEnv("MOZ_GL_DEBUG"))
sDebugMode |= DebugEnabled;
// 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 (PR_GetEnv("MOZ_GL_DEBUG_VERBOSE"))
sDebugMode |= DebugTrace;
// aborts on GL error. Can be useful to debug quicker code that is known not to generate any GL error in principle.
if (PR_GetEnv("MOZ_GL_DEBUG_ABORT_ON_ERROR"))
sDebugMode |= DebugAbortOnError;
#endif
if (mInitialized) {
#ifdef DEBUG
static bool firstRun = true;
if (firstRun && DebugMode()) {
const char *vendors[size_t(GLVendor::Other)] = {
"Intel",
"NVIDIA",
"ATI",
"Qualcomm"
};
MOZ_ASSERT(glVendorString);
if (mVendor < GLVendor::Other) {
printf_stderr("OpenGL vendor ('%s') recognized as: %s\n",
glVendorString, vendors[size_t(mVendor)]);
} else {
printf_stderr("OpenGL vendor ('%s') unrecognized\n", glVendorString);
}
}
firstRun = false;
#endif
InitExtensions();
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 (Vendor() == GLVendor::Imagination &&
Renderer() == GLRenderer::SGX540) {
// Bug 980048
MarkExtensionUnsupported(OES_EGL_sync);
}
#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
if (Vendor() == gl::GLVendor::NVIDIA &&
!nsCocoaFeatures::OnMavericksOrLater())
{
MarkUnsupported(GLFeature::depth_texture);
}
#endif
// ANGLE's divisor support is busted. (see bug 916816)
if (IsANGLE()) {
MarkUnsupported(GLFeature::instanced_arrays);
}
}
NS_ASSERTION(!IsExtensionSupported(GLContext::ARB_pixel_buffer_object) ||
(mSymbols.fMapBuffer && mSymbols.fUnmapBuffer),
"ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer being available!");
if (SupportsRobustness()) {
mHasRobustness = false;
if (IsExtensionSupported(ARB_robustness)) {
SymLoadStruct robustnessSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetGraphicsResetStatus, { "GetGraphicsResetStatusARB", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&robustnessSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports ARB_robustness without supplying GetGraphicsResetStatusARB.");
mSymbols.fGetGraphicsResetStatus = nullptr;
} else {
mHasRobustness = true;
}
}
if (!IsExtensionSupported(ARB_robustness) &&
IsExtensionSupported(EXT_robustness)) {
SymLoadStruct robustnessSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetGraphicsResetStatus, { "GetGraphicsResetStatusEXT", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&robustnessSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports EXT_robustness without supplying GetGraphicsResetStatusEXT.");
mSymbols.fGetGraphicsResetStatus = nullptr;
} else {
mHasRobustness = true;
}
}
if (!mHasRobustness) {
MarkUnsupported(GLFeature::robustness);
}
}
// Check for aux symbols based on extensions
if (IsSupported(GLFeature::framebuffer_blit))
{
SymLoadStruct auxSymbols[] = {
{
(PRFuncPtr*) &mSymbols.fBlitFramebuffer,
{
"BlitFramebuffer",
"BlitFramebufferEXT",
"BlitFramebufferANGLE",
nullptr
}
},
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&auxSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports framebuffer_blit without supplying glBlitFramebuffer");
MarkUnsupported(GLFeature::framebuffer_blit);
mSymbols.fBlitFramebuffer = nullptr;
}
}
if (IsSupported(GLFeature::framebuffer_multisample))
{
SymLoadStruct auxSymbols[] = {
{
(PRFuncPtr*) &mSymbols.fRenderbufferStorageMultisample,
{
"RenderbufferStorageMultisample",
"RenderbufferStorageMultisampleEXT",
"RenderbufferStorageMultisampleANGLE",
nullptr
}
},
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&auxSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports framebuffer_multisample without supplying glRenderbufferStorageMultisample");
MarkUnsupported(GLFeature::framebuffer_multisample);
mSymbols.fRenderbufferStorageMultisample = nullptr;
}
}
if (IsExtensionSupported(ARB_sync)) {
SymLoadStruct syncSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fFenceSync, { "FenceSync", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsSync, { "IsSync", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteSync, { "DeleteSync", nullptr } },
{ (PRFuncPtr*) &mSymbols.fClientWaitSync, { "ClientWaitSync", nullptr } },
{ (PRFuncPtr*) &mSymbols.fWaitSync, { "WaitSync", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetInteger64v, { "GetInteger64v", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetSynciv, { "GetSynciv", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&syncSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports ARB_sync without supplying its functions.");
MarkExtensionUnsupported(ARB_sync);
mSymbols.fFenceSync = nullptr;
mSymbols.fIsSync = nullptr;
mSymbols.fDeleteSync = nullptr;
mSymbols.fClientWaitSync = nullptr;
mSymbols.fWaitSync = nullptr;
mSymbols.fGetInteger64v = nullptr;
mSymbols.fGetSynciv = nullptr;
}
}
if (IsExtensionSupported(OES_EGL_image)) {
SymLoadStruct imageSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fEGLImageTargetTexture2D, { "EGLImageTargetTexture2DOES", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEGLImageTargetRenderbufferStorage, { "EGLImageTargetRenderbufferStorageOES", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&imageSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports OES_EGL_image without supplying its functions.");
MarkExtensionUnsupported(OES_EGL_image);
mSymbols.fEGLImageTargetTexture2D = nullptr;
mSymbols.fEGLImageTargetRenderbufferStorage = nullptr;
}
}
if (IsExtensionSupported(APPLE_texture_range)) {
SymLoadStruct vaoSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTextureRangeAPPLE, { "TextureRangeAPPLE", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&vaoSymbols[0], trygl, prefix)) {
mSymbols.fTextureRangeAPPLE = nullptr;
}
}
if (IsExtensionSupported(ARB_vertex_array_object) ||
IsExtensionSupported(OES_vertex_array_object)) {
SymLoadStruct vaoSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fIsVertexArray, { "IsVertexArray", "IsVertexArrayOES", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenVertexArrays, { "GenVertexArrays", "GenVertexArraysOES", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindVertexArray, { "BindVertexArray", "BindVertexArrayOES", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, { "DeleteVertexArrays", "DeleteVertexArraysOES", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&vaoSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports Vertex Array Object without supplying its functions.");
MarkUnsupported(GLFeature::vertex_array_object);
mSymbols.fIsVertexArray = nullptr;
mSymbols.fGenVertexArrays = nullptr;
mSymbols.fBindVertexArray = nullptr;
mSymbols.fDeleteVertexArrays = nullptr;
}
}
else if (IsExtensionSupported(APPLE_vertex_array_object)) {
/*
* separate call to LoadSymbols with APPLE_vertex_array_object to work around
* a driver bug : the IsVertexArray symbol (without suffix) can be present but unusable.
*/
SymLoadStruct vaoSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fIsVertexArray, { "IsVertexArrayAPPLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenVertexArrays, { "GenVertexArraysAPPLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fBindVertexArray, { "BindVertexArrayAPPLE", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, { "DeleteVertexArraysAPPLE", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(&vaoSymbols[0], trygl, prefix)) {
NS_ERROR("GL supports Vertex Array Object without supplying its functions.");
MarkUnsupported(GLFeature::vertex_array_object);
mSymbols.fIsVertexArray = nullptr;
mSymbols.fGenVertexArrays = nullptr;
mSymbols.fBindVertexArray = nullptr;
mSymbols.fDeleteVertexArrays = nullptr;
}
}
if (IsSupported(GLFeature::draw_instanced)) {
SymLoadStruct drawInstancedSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawArraysInstanced,
{ "DrawArraysInstanced",
"DrawArraysInstancedARB",
"DrawArraysInstancedEXT",
"DrawArraysInstancedNV",
"DrawArraysInstancedANGLE",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fDrawElementsInstanced,
{ "DrawElementsInstanced",
"DrawElementsInstancedARB",
"DrawElementsInstancedEXT",
"DrawElementsInstancedNV",
"DrawElementsInstancedANGLE",
nullptr
}
},
{ nullptr, { nullptr } },
};
if (!LoadSymbols(drawInstancedSymbols, trygl, prefix)) {
NS_ERROR("GL supports instanced draws without supplying its functions.");
MarkUnsupported(GLFeature::draw_instanced);
mSymbols.fDrawArraysInstanced = nullptr;
mSymbols.fDrawElementsInstanced = nullptr;
}
}
if (IsSupported(GLFeature::instanced_arrays)) {
SymLoadStruct instancedArraySymbols[] = {
{ (PRFuncPtr*) &mSymbols.fVertexAttribDivisor,
{ "VertexAttribDivisor",
"VertexAttribDivisorARB",
"VertexAttribDivisorNV",
"VertexAttribDivisorANGLE",
nullptr
}
},
{ nullptr, { nullptr } },
};
if (!LoadSymbols(instancedArraySymbols, trygl, prefix)) {
NS_ERROR("GL supports array instanced without supplying it function.");
MarkUnsupported(GLFeature::instanced_arrays);
mSymbols.fVertexAttribDivisor = nullptr;
}
}
if (IsSupported(GLFeature::transform_feedback)) {
SymLoadStruct transformFeedbackSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferBase,
{ "BindBufferBase",
"BindBufferBaseEXT",
"BindBufferBaseNV",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fBindBufferRange,
{ "BindBufferRange",
"BindBufferRangeEXT",
"BindBufferRangeNV",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fBeginTransformFeedback,
{ "BeginTransformFeedback",
"BeginTransformFeedbackEXT",
"BeginTransformFeedbackNV",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fEndTransformFeedback,
{ "EndTransformFeedback",
"EndTransformFeedbackEXT",
"EndTransformFeedbackNV",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings,
{ "TransformFeedbackVaryings",
"TransformFeedbackVaryingsEXT",
"TransformFeedbackVaryingsNV",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying,
{ "GetTransformFeedbackVarying",
"GetTransformFeedbackVaryingEXT",
"GetTransformFeedbackVaryingNV",
nullptr
}
},
{ (PRFuncPtr*) &mSymbols.fGetIntegeri_v,
{ "GetIntegeri_v",
"GetIntegerIndexedvEXT",
"GetIntegerIndexedvNV",
nullptr
}
},
{ nullptr, { nullptr } },
};
if (!LoadSymbols(transformFeedbackSymbols, trygl, prefix)) {
NS_ERROR("GL supports transform feedback without supplying its functions.");
MarkUnsupported(GLFeature::transform_feedback);
MarkUnsupported(GLFeature::bind_buffer_offset);
mSymbols.fBindBufferBase = nullptr;
mSymbols.fBindBufferRange = nullptr;
mSymbols.fBeginTransformFeedback = nullptr;
mSymbols.fEndTransformFeedback = nullptr;
mSymbols.fTransformFeedbackVaryings = nullptr;
mSymbols.fGetTransformFeedbackVarying = nullptr;
mSymbols.fGetIntegeri_v = nullptr;
}
}
if (IsSupported(GLFeature::bind_buffer_offset)) {
SymLoadStruct bindBufferOffsetSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferOffset,
{ "BindBufferOffset",
"BindBufferOffsetEXT",
"BindBufferOffsetNV",
nullptr
}
},
{ nullptr, { nullptr } },
};
if (!LoadSymbols(bindBufferOffsetSymbols, trygl, prefix)) {
NS_ERROR("GL supports BindBufferOffset without supplying its function.");
MarkUnsupported(GLFeature::bind_buffer_offset);
mSymbols.fBindBufferOffset = nullptr;
}
}
if (IsSupported(GLFeature::query_objects)) {
SymLoadStruct queryObjectsSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBeginQuery, { "BeginQuery", "BeginQueryEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGenQueries, { "GenQueries", "GenQueriesEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fDeleteQueries, { "DeleteQueries", "DeleteQueriesEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fEndQuery, { "EndQuery", "EndQueryEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryiv, { "GetQueryiv", "GetQueryivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, { "GetQueryObjectuiv", "GetQueryObjectuivEXT", nullptr } },
{ (PRFuncPtr*) &mSymbols.fIsQuery, { "IsQuery", "IsQueryEXT", nullptr } },
{ nullptr, { nullptr } },
};
if (!LoadSymbols(queryObjectsSymbols, trygl, prefix)) {
NS_ERROR("GL supports query objects without supplying its functions.");
MarkUnsupported(GLFeature::query_objects);