CompilerD3D::CompilerD3D(const gl::Data &data, ShShaderOutput outputType)
: mSpec(data.clientVersion > 2 ? SH_GLES3_SPEC : SH_GLES2_SPEC),
mOutputType(outputType),
mResources(),
mFragmentCompiler(NULL),
mVertexCompiler(NULL)
{
ASSERT(data.clientVersion == 2 || data.clientVersion == 3);
const gl::Caps &caps = *data.caps;
const gl::Extensions &extensions = *data.extensions;
ShInitBuiltInResources(&mResources);
mResources.MaxVertexAttribs = caps.maxVertexAttributes;
mResources.MaxVertexUniformVectors = caps.maxVertexUniformVectors;
mResources.MaxVaryingVectors = caps.maxVaryingVectors;
mResources.MaxVertexTextureImageUnits = caps.maxVertexTextureImageUnits;
mResources.MaxCombinedTextureImageUnits = caps.maxCombinedTextureImageUnits;
mResources.MaxTextureImageUnits = caps.maxTextureImageUnits;
mResources.MaxFragmentUniformVectors = caps.maxFragmentUniformVectors;
mResources.MaxDrawBuffers = caps.maxDrawBuffers;
mResources.OES_standard_derivatives = extensions.standardDerivatives;
mResources.EXT_draw_buffers = extensions.drawBuffers;
mResources.EXT_shader_texture_lod = 1;
// resources.OES_EGL_image_external = mRenderer->getShareHandleSupport() ? 1 : 0; // TODO: commented out until the extension is actually supported.
mResources.FragmentPrecisionHigh = 1; // Shader Model 2+ always supports FP24 (s16e7) which corresponds to highp
mResources.EXT_frag_depth = 1; // Shader Model 2+ always supports explicit depth output
// GLSL ES 3.0 constants
mResources.MaxVertexOutputVectors = caps.maxVertexOutputComponents / 4;
mResources.MaxFragmentInputVectors = caps.maxFragmentInputComponents / 4;
mResources.MinProgramTexelOffset = caps.minProgramTexelOffset;
mResources.MaxProgramTexelOffset = caps.maxProgramTexelOffset;
}
// Perform a one-time initialization of the shader compiler (or after being destructed by releaseCompiler)
void Shader::initializeCompiler()
{
if (!mFragmentCompiler)
{
int result = ShInitialize();
if (result)
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
Context *context = getContext();
resources.MaxVertexAttribs = MAX_VERTEX_ATTRIBS;
resources.MaxVertexUniformVectors = MAX_VERTEX_UNIFORM_VECTORS;
resources.MaxVaryingVectors = context->getMaximumVaryingVectors();
resources.MaxVertexTextureImageUnits = context->getMaximumVertexTextureImageUnits();
resources.MaxCombinedTextureImageUnits = context->getMaximumCombinedTextureImageUnits();
resources.MaxTextureImageUnits = MAX_TEXTURE_IMAGE_UNITS;
resources.MaxFragmentUniformVectors = context->getMaximumFragmentUniformVectors();
resources.MaxDrawBuffers = MAX_DRAW_BUFFERS;
resources.OES_standard_derivatives = 1;
// resources.OES_EGL_image_external = getDisplay()->isD3d9ExDevice() ? 1 : 0; // TODO: commented out until the extension is actually supported.
mFragmentCompiler = ShConstructCompiler(SH_FRAGMENT_SHADER, SH_GLES2_SPEC, SH_HLSL_OUTPUT, &resources);
mVertexCompiler = ShConstructCompiler(SH_VERTEX_SHADER, SH_GLES2_SPEC, SH_HLSL_OUTPUT, &resources);
}
}
}
void GraphicsContext3DPrivate::initializeANGLE()
{
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
m_context->getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
m_context->getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
m_context->getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
m_context->getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
m_context->getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
m_context->getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
m_context->getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
Extensions3D* extensions = m_context->getExtensions();
if (extensions->supports("GL_ARB_texture_rectangle"))
ANGLEResources.ARB_texture_rectangle = 1;
GC3Dint range[2], precision;
m_context->getShaderPrecisionFormat(GraphicsContext3D::FRAGMENT_SHADER, GraphicsContext3D::HIGH_FLOAT, range, &precision);
ANGLEResources.FragmentPrecisionHigh = (range[0] || range[1] || precision);
m_context->m_compiler.setResources(ANGLEResources);
}
Shader::Shader(ResourceManager *manager, GLuint handle) : mHandle(handle), mResourceManager(manager)
{
mSource = NULL;
mHlsl = NULL;
mInfoLog = NULL;
// Perform a one-time initialization of the shader compiler (or after being destructed by releaseCompiler)
if (!mFragmentCompiler)
{
int result = ShInitialize();
if (result)
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
Context *context = getContext();
resources.MaxVertexAttribs = MAX_VERTEX_ATTRIBS;
resources.MaxVertexUniformVectors = MAX_VERTEX_UNIFORM_VECTORS;
resources.MaxVaryingVectors = context->getMaximumVaryingVectors();
resources.MaxVertexTextureImageUnits = MAX_VERTEX_TEXTURE_IMAGE_UNITS;
resources.MaxCombinedTextureImageUnits = MAX_COMBINED_TEXTURE_IMAGE_UNITS;
resources.MaxTextureImageUnits = MAX_TEXTURE_IMAGE_UNITS;
resources.MaxFragmentUniformVectors = context->getMaximumFragmentUniformVectors();
resources.MaxDrawBuffers = MAX_DRAW_BUFFERS;
resources.OES_standard_derivatives = 1;
mFragmentCompiler = ShConstructCompiler(SH_FRAGMENT_SHADER, SH_GLES2_SPEC, &resources);
mVertexCompiler = ShConstructCompiler(SH_VERTEX_SHADER, SH_GLES2_SPEC, &resources);
}
}
mRefCount = 0;
mDeleteStatus = false;
}
// Perform a one-time initialization of the shader compiler (or after being destructed by releaseCompiler)
void Shader::initializeCompiler()
{
if (!mFragmentCompiler)
{
int result = ShInitialize();
if (result)
{
ShShaderOutput hlslVersion = (mRenderer->getMajorShaderModel() >= 4) ? SH_HLSL11_OUTPUT : SH_HLSL9_OUTPUT;
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
resources.MaxVertexAttribs = MAX_VERTEX_ATTRIBS;
resources.MaxVertexUniformVectors = mRenderer->getMaxVertexUniformVectors();
resources.MaxVaryingVectors = mRenderer->getMaxVaryingVectors();
resources.MaxVertexTextureImageUnits = 0;
resources.MaxCombinedTextureImageUnits = mRenderer->getMaxCombinedTextureImageUnits();
resources.MaxTextureImageUnits = MAX_TEXTURE_IMAGE_UNITS;
resources.MaxFragmentUniformVectors = mRenderer->getMaxFragmentUniformVectors();
resources.MaxDrawBuffers = mRenderer->getMaxRenderTargets();
resources.OES_standard_derivatives = mRenderer->getDerivativeInstructionSupport();
resources.EXT_draw_buffers = mRenderer->getMaxRenderTargets() > 1;
// resources.OES_EGL_image_external = mRenderer->getShareHandleSupport() ? 1 : 0; // TODO: commented out until the extension is actually supported.
resources.FragmentPrecisionHigh = 1; // Shader Model 2+ always supports FP24 (s16e7) which corresponds to highp
resources.EXT_frag_depth = 1; // Shader Model 2+ always supports explicit depth output
mFragmentCompiler = ShConstructCompiler(SH_FRAGMENT_SHADER, SH_GLES2_SPEC, hlslVersion, &resources);
mVertexCompiler = ShConstructCompiler(SH_VERTEX_SHADER, SH_GLES2_SPEC, hlslVersion, &resources);
}
}
}
webgl::ShaderValidator*
WebGLContext::CreateShaderValidator(GLenum shaderType) const
{
if (mBypassShaderValidation)
return nullptr;
ShShaderSpec spec = IsWebGL2() ? SH_WEBGL2_SPEC : SH_WEBGL_SPEC;
ShShaderOutput outputLanguage = gl->IsGLES() ? SH_ESSL_OUTPUT
: SH_GLSL_OUTPUT;
// If we're using WebGL2 we want a more specific version of GLSL
if (IsWebGL2())
outputLanguage = ShaderOutput(gl);
ShBuiltInResources resources;
memset(&resources, 0, sizeof(resources));
ShInitBuiltInResources(&resources);
resources.HashFunction = webgl::IdentifierHashFunc;
resources.MaxVertexAttribs = mGLMaxVertexAttribs;
resources.MaxVertexUniformVectors = mGLMaxVertexUniformVectors;
resources.MaxVaryingVectors = mGLMaxVaryingVectors;
resources.MaxVertexTextureImageUnits = mGLMaxVertexTextureImageUnits;
resources.MaxCombinedTextureImageUnits = mGLMaxTextureUnits;
resources.MaxTextureImageUnits = mGLMaxTextureImageUnits;
resources.MaxFragmentUniformVectors = mGLMaxFragmentUniformVectors;
resources.MaxDrawBuffers = mGLMaxDrawBuffers;
if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::EXT_frag_depth))
resources.EXT_frag_depth = 1;
if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::OES_standard_derivatives))
resources.OES_standard_derivatives = 1;
if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::WEBGL_draw_buffers))
resources.EXT_draw_buffers = 1;
if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::EXT_shader_texture_lod))
resources.EXT_shader_texture_lod = 1;
// Tell ANGLE to allow highp in frag shaders. (unless disabled)
// If underlying GLES doesn't have highp in frag shaders, it should complain anyways.
resources.FragmentPrecisionHigh = mDisableFragHighP ? 0 : 1;
if (gl->WorkAroundDriverBugs()) {
#ifdef XP_MACOSX
if (gl->Vendor() == gl::GLVendor::NVIDIA) {
// Work around bug 890432
resources.MaxExpressionComplexity = 1000;
}
#endif
}
int compileOptions = webgl::ChooseValidatorCompileOptions(resources, gl);
return webgl::ShaderValidator::Create(shaderType, spec, outputLanguage, resources,
compileOptions);
}
virtual void SetUp()
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
resources.MaxDrawBuffers = 8;
initTranslator(resources);
}
void SetUp() override
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
mTranslator = new TranslatorESSL(GL_FRAGMENT_SHADER, SH_WEBGL2_SPEC);
ASSERT_TRUE(mTranslator->Init(resources));
}
void SetUp() override
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
mTranslator = new TranslatorESSL(GL_VERTEX_SHADER, SH_GLES3_SPEC);
ASSERT_TRUE(mTranslator->Init(resources));
}
virtual void SetUp()
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
mTranslator = new TranslatorESSL(GL_FRAGMENT_SHADER, SH_GLES3_SPEC);
ASSERT_TRUE(mTranslator->Init(resources));
}
PassOwnPtr<ANGLEPlatformBridge> CustomFilterGlobalContext::createShaderValidator(ShShaderSpec shaderSpec)
{
OwnPtr<ANGLEPlatformBridge> validator = adoptPtr(new ANGLEPlatformBridge(SH_ESSL_OUTPUT, shaderSpec));
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
validator->setResources(resources);
return validator.release();
}
bool compileWithSettings(ShShaderOutput output, const std::string &shaderString,
std::string *translatedCode, std::string *infoLog)
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
resources.WEBGL_debug_shader_precision = 1;
return compileTestShader(GL_FRAGMENT_SHADER, SH_GLES2_SPEC, output, shaderString, &resources,
translatedCode, infoLog);
}
virtual void SetUp()
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
mTranslator = new TranslatorGLSL(
GL_FRAGMENT_SHADER, SH_GLES2_SPEC, SH_GLSL_COMPATIBILITY_OUTPUT);
ASSERT_TRUE(mTranslator->Init(resources));
}
virtual void SetUp()
{
allocator.push();
SetGlobalPoolAllocator(&allocator);
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
mTranslatorESSL = new TranslatorESSL(GL_FRAGMENT_SHADER, SH_GLES3_SPEC);
ASSERT_TRUE(mTranslatorESSL->Init(resources));
}
virtual void SetUp()
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
resources.WEBGL_debug_shader_precision = 1;
mTranslatorESSL = new TranslatorESSL(GL_FRAGMENT_SHADER, SH_GLES2_SPEC);
ASSERT_TRUE(mTranslatorESSL->Init(resources));
mTranslatorGLSL = new TranslatorGLSL(
GL_FRAGMENT_SHADER, SH_GLES2_SPEC, SH_GLSL_COMPATIBILITY_OUTPUT);
ASSERT_TRUE(mTranslatorGLSL->Init(resources));
}
//
// Set up the per compile resources
//
void GenerateResources(ShBuiltInResources* resources)
{
ShInitBuiltInResources(resources);
resources->MaxVertexAttribs = 8;
resources->MaxVertexUniformVectors = 128;
resources->MaxVaryingVectors = 8;
resources->MaxVertexTextureImageUnits = 0;
resources->MaxCombinedTextureImageUnits = 8;
resources->MaxTextureImageUnits = 8;
resources->MaxFragmentUniformVectors = 16;
resources->MaxDrawBuffers = 1;
resources->OES_standard_derivatives = 0;
resources->OES_EGL_image_external = 0;
}
// Perform a one-time initialization of the shader compiler (or after being destructed by releaseCompiler)
void ShaderD3D::initializeCompiler()
{
if (!mFragmentCompiler)
{
bool result = ShInitialize();
if (result)
{
ShShaderSpec specVersion = (mRenderer->getCurrentClientVersion() >= 3) ? SH_GLES3_SPEC : SH_GLES2_SPEC;
ShShaderOutput hlslVersion = (mRenderer->getMajorShaderModel() >= 4) ? SH_HLSL11_OUTPUT : SH_HLSL9_OUTPUT;
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
// TODO(geofflang): use context's caps
const gl::Caps &caps = mRenderer->getRendererCaps();
const gl::Extensions &extensions = mRenderer->getRendererExtensions();
resources.MaxVertexAttribs = caps.maxVertexAttributes;
resources.MaxVertexUniformVectors = caps.maxVertexUniformVectors;
resources.MaxVaryingVectors = caps.maxVaryingVectors;
resources.MaxVertexTextureImageUnits = caps.maxVertexTextureImageUnits;
resources.MaxCombinedTextureImageUnits = caps.maxCombinedTextureImageUnits;
resources.MaxTextureImageUnits = caps.maxTextureImageUnits;
resources.MaxFragmentUniformVectors = caps.maxFragmentUniformVectors;
resources.MaxDrawBuffers = caps.maxDrawBuffers;
resources.OES_standard_derivatives = extensions.standardDerivatives;
resources.EXT_draw_buffers = extensions.drawBuffers;
resources.EXT_shader_texture_lod = 1;
// resources.OES_EGL_image_external = mRenderer->getShareHandleSupport() ? 1 : 0; // TODO: commented out until the extension is actually supported.
resources.FragmentPrecisionHigh = 1; // Shader Model 2+ always supports FP24 (s16e7) which corresponds to highp
resources.EXT_frag_depth = 1; // Shader Model 2+ always supports explicit depth output
// GLSL ES 3.0 constants
resources.MaxVertexOutputVectors = caps.maxVertexOutputComponents / 4;
resources.MaxFragmentInputVectors = caps.maxFragmentInputComponents / 4;
resources.MinProgramTexelOffset = caps.minProgramTexelOffset;
resources.MaxProgramTexelOffset = caps.maxProgramTexelOffset;
mFragmentCompiler = ShConstructCompiler(GL_FRAGMENT_SHADER, specVersion, hlslVersion, &resources);
mVertexCompiler = ShConstructCompiler(GL_VERTEX_SHADER, specVersion, hlslVersion, &resources);
}
}
}
// Set up the per compile resources
static void GenerateResources(ShBuiltInResources *res)
{
ShInitBuiltInResources(res);
res->MaxVertexAttribs = 8;
res->MaxVertexUniformVectors = 128;
res->MaxVaryingVectors = 8;
res->MaxVertexTextureImageUnits = 0;
res->MaxCombinedTextureImageUnits = 8;
res->MaxTextureImageUnits = 8;
res->MaxFragmentUniformVectors = 16;
res->MaxDrawBuffers = 1;
res->OES_standard_derivatives = 0;
res->OES_EGL_image_external = 0;
res->MaxExpressionComplexity = kMaxExpressionComplexity;
res->MaxCallStackDepth = kMaxCallStackDepth;
res->MaxFunctionParameters = kMaxFunctionParameters;
}
Compiler::Compiler(rx::GLImplFactory *implFactory, const ContextState &state)
: mImplementation(implFactory->createCompiler()),
mSpec(SelectShaderSpec(state.getClientMajorVersion(), state.getClientMinorVersion())),
mOutputType(mImplementation->getTranslatorOutputType()),
mResources(),
mFragmentCompiler(nullptr),
mVertexCompiler(nullptr)
{
ASSERT(state.getClientMajorVersion() == 2 || state.getClientMajorVersion() == 3);
const gl::Caps &caps = state.getCaps();
const gl::Extensions &extensions = state.getExtensions();
ShInitBuiltInResources(&mResources);
mResources.MaxVertexAttribs = caps.maxVertexAttributes;
mResources.MaxVertexUniformVectors = caps.maxVertexUniformVectors;
mResources.MaxVaryingVectors = caps.maxVaryingVectors;
mResources.MaxVertexTextureImageUnits = caps.maxVertexTextureImageUnits;
mResources.MaxCombinedTextureImageUnits = caps.maxCombinedTextureImageUnits;
mResources.MaxTextureImageUnits = caps.maxTextureImageUnits;
mResources.MaxFragmentUniformVectors = caps.maxFragmentUniformVectors;
mResources.MaxDrawBuffers = caps.maxDrawBuffers;
mResources.OES_standard_derivatives = extensions.standardDerivatives;
mResources.EXT_draw_buffers = extensions.drawBuffers;
mResources.EXT_shader_texture_lod = extensions.shaderTextureLOD;
mResources.OES_EGL_image_external = extensions.eglImageExternal;
mResources.OES_EGL_image_external_essl3 = extensions.eglImageExternalEssl3;
mResources.NV_EGL_stream_consumer_external = extensions.eglStreamConsumerExternal;
// TODO: use shader precision caps to determine if high precision is supported?
mResources.FragmentPrecisionHigh = 1;
mResources.EXT_frag_depth = extensions.fragDepth;
// GLSL ES 3.0 constants
mResources.MaxVertexOutputVectors = caps.maxVertexOutputComponents / 4;
mResources.MaxFragmentInputVectors = caps.maxFragmentInputComponents / 4;
mResources.MinProgramTexelOffset = caps.minProgramTexelOffset;
mResources.MaxProgramTexelOffset = caps.maxProgramTexelOffset;
}
Compiler::Compiler(rx::ImplFactory *implFactory, const gl::Data &data)
: mImplementation(implFactory->createCompiler()),
mSpec(data.clientVersion > 2 ? SH_GLES3_SPEC : SH_GLES2_SPEC),
mOutputType(mImplementation->getTranslatorOutputType()),
mResources(),
mFragmentCompiler(nullptr),
mVertexCompiler(nullptr)
{
ASSERT(data.clientVersion == 2 || data.clientVersion == 3);
const gl::Caps &caps = *data.caps;
const gl::Extensions &extensions = *data.extensions;
ShInitBuiltInResources(&mResources);
mResources.MaxVertexAttribs = caps.maxVertexAttributes;
mResources.MaxVertexUniformVectors = caps.maxVertexUniformVectors;
mResources.MaxVaryingVectors = caps.maxVaryingVectors;
mResources.MaxVertexTextureImageUnits = caps.maxVertexTextureImageUnits;
mResources.MaxCombinedTextureImageUnits = caps.maxCombinedTextureImageUnits;
mResources.MaxTextureImageUnits = caps.maxTextureImageUnits;
mResources.MaxFragmentUniformVectors = caps.maxFragmentUniformVectors;
mResources.MaxDrawBuffers = caps.maxDrawBuffers;
mResources.OES_standard_derivatives = extensions.standardDerivatives;
mResources.EXT_draw_buffers = extensions.drawBuffers;
mResources.EXT_shader_texture_lod = extensions.shaderTextureLOD;
// TODO: disabled until the extension is actually supported.
mResources.OES_EGL_image_external = 0;
// TODO: use shader precision caps to determine if high precision is supported?
mResources.FragmentPrecisionHigh = 1;
mResources.EXT_frag_depth = extensions.fragDepth;
// GLSL ES 3.0 constants
mResources.MaxVertexOutputVectors = caps.maxVertexOutputComponents / 4;
mResources.MaxFragmentInputVectors = caps.maxFragmentInputComponents / 4;
mResources.MinProgramTexelOffset = caps.minProgramTexelOffset;
mResources.MaxProgramTexelOffset = caps.maxProgramTexelOffset;
}
// Test that using invariant varyings doesn't trigger a double delete.
TEST(ShaderVariableTest, InvariantDoubleDeleteBug)
{
ShBuiltInResources resources;
ShInitBuiltInResources(&resources);
ShHandle compiler = ShConstructCompiler(GL_VERTEX_SHADER, SH_GLES2_SPEC,
SH_GLSL_COMPATIBILITY_OUTPUT, &resources);
EXPECT_NE(static_cast<ShHandle>(0), compiler);
const char *program[] =
{
"attribute vec4 position;\n"
"varying float v;\n"
"invariant v;\n"
"void main() {\n"
" v = 1.0;\n"
" gl_Position = position;\n"
"}"
};
EXPECT_TRUE(ShCompile(compiler, program, 1, SH_OBJECT_CODE));
EXPECT_TRUE(ShCompile(compiler, program, 1, SH_OBJECT_CODE));
ShDestruct(compiler);
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3D::Attributes attrs, HostWindow* hostWindow, bool)
: m_currentWidth(0)
, m_currentHeight(0)
, m_attrs(attrs)
, m_texture(0)
, m_compositorTexture(0)
, m_fbo(0)
#if defined(QT_OPENGL_ES_2)
, m_depthBuffer(0)
, m_stencilBuffer(0)
#else
, m_depthStencilBuffer(0)
#endif
, m_layerComposited(false)
, m_internalColorFormat(0)
, m_boundFBO(0)
, m_activeTexture(GL_TEXTURE0)
, m_boundTexture0(0)
, m_multisampleFBO(0)
, m_multisampleDepthStencilBuffer(0)
, m_multisampleColorBuffer(0)
, m_private(adoptPtr(new GraphicsContext3DPrivate(this, hostWindow)))
{
#if !defined(QT_OPENGL_ES_2)
validateAttributes();
#endif
if (!m_private->m_surface) {
LOG_ERROR("GraphicsContext3D: QGLWidget initialization failed.");
m_private = nullptr;
return;
}
static bool initialized = false;
static bool success = true;
if (!initialized) {
success = initializeOpenGLShims();
initialized = true;
}
if (!success) {
m_private = nullptr;
return;
}
// Create buffers for the canvas FBO.
glGenFramebuffers(/* count */ 1, &m_fbo);
glGenTextures(1, &m_texture);
glBindTexture(GraphicsContext3D::TEXTURE_2D, m_texture);
glTexParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
glTexParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
glTexParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
glTexParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
glBindTexture(GraphicsContext3D::TEXTURE_2D, 0);
// Create a multisample FBO.
if (m_attrs.antialias) {
glGenFramebuffers(1, &m_multisampleFBO);
glBindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
m_boundFBO = m_multisampleFBO;
glGenRenderbuffers(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
glGenRenderbuffers(1, &m_multisampleDepthStencilBuffer);
} else {
// Bind canvas FBO.
glBindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
m_boundFBO = m_fbo;
#if defined(QT_OPENGL_ES_2)
if (m_attrs.depth)
glGenRenderbuffers(1, &m_depthBuffer);
if (m_attrs.stencil)
glGenRenderbuffers(1, &m_stencilBuffer);
#else
if (m_attrs.stencil || m_attrs.depth)
glGenRenderbuffers(1, &m_depthStencilBuffer);
#endif
}
#if !defined(QT_OPENGL_ES_2)
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
m_compiler.setResources(ANGLEResources);
glEnable(GL_POINT_SPRITE);
glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
#endif
glClearColor(0.0, 0.0, 0.0, 0.0);
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3D::Attributes attributes, HostWindow*, bool)
: m_currentWidth(0)
, m_currentHeight(0)
, m_attrs(attributes)
, m_texture(0)
, m_fbo(0)
, m_depthStencilBuffer(0)
, m_boundFBO(0)
, m_activeTexture(GL_TEXTURE0)
, m_boundTexture0(0)
, m_multisampleFBO(0)
, m_multisampleDepthStencilBuffer(0)
, m_multisampleColorBuffer(0)
, m_private(GraphicsContext3DPrivate::create(this))
{
makeContextCurrent();
validateAttributes();
// Create a texture to render into.
::glGenTextures(1, &m_texture);
::glBindTexture(GL_TEXTURE_2D, m_texture);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
::glBindTexture(GL_TEXTURE_2D, 0);
// Create an FBO.
::glGenFramebuffersEXT(1, &m_fbo);
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
m_boundFBO = m_fbo;
if (!m_attrs.antialias && (m_attrs.stencil || m_attrs.depth))
::glGenRenderbuffersEXT(1, &m_depthStencilBuffer);
// Create a multisample FBO.
if (m_attrs.antialias) {
::glGenFramebuffersEXT(1, &m_multisampleFBO);
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_multisampleFBO);
m_boundFBO = m_multisampleFBO;
::glGenRenderbuffersEXT(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
::glGenRenderbuffersEXT(1, &m_multisampleDepthStencilBuffer);
}
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
m_compiler.setResources(ANGLEResources);
::glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
::glEnable(GL_POINT_SPRITE);
::glClearColor(0, 0, 0, 0);
}
void SetUp() override
{
ShInitBuiltInResources(&mResources);
mCompiler = nullptr;
mResources.EXT_frag_depth = GetParam();
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3DAttributes attributes, HostWindow*, GraphicsContext3D::RenderStyle renderStyle)
: m_currentWidth(0)
, m_currentHeight(0)
, m_attrs(attributes)
, m_texture(0)
, m_compositorTexture(0)
, m_fbo(0)
#if USE(COORDINATED_GRAPHICS_THREADED)
, m_intermediateTexture(0)
#endif
, m_depthStencilBuffer(0)
, m_layerComposited(false)
, m_multisampleFBO(0)
, m_multisampleDepthStencilBuffer(0)
, m_multisampleColorBuffer(0)
, m_private(std::make_unique<GraphicsContext3DPrivate>(this, renderStyle))
{
makeContextCurrent();
validateAttributes();
if (renderStyle == RenderOffscreen) {
// Create a texture to render into.
::glGenTextures(1, &m_texture);
::glBindTexture(GL_TEXTURE_2D, m_texture);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
::glBindTexture(GL_TEXTURE_2D, 0);
// Create an FBO.
::glGenFramebuffers(1, &m_fbo);
::glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
#if USE(COORDINATED_GRAPHICS_THREADED)
::glGenTextures(1, &m_compositorTexture);
::glBindTexture(GL_TEXTURE_2D, m_compositorTexture);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
::glGenTextures(1, &m_intermediateTexture);
::glBindTexture(GL_TEXTURE_2D, m_intermediateTexture);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
::glBindTexture(GL_TEXTURE_2D, 0);
#endif
m_state.boundFBO = m_fbo;
if (!m_attrs.antialias && (m_attrs.stencil || m_attrs.depth))
::glGenRenderbuffers(1, &m_depthStencilBuffer);
// Create a multisample FBO.
if (m_attrs.antialias) {
::glGenFramebuffers(1, &m_multisampleFBO);
::glBindFramebuffer(GL_FRAMEBUFFER, m_multisampleFBO);
m_state.boundFBO = m_multisampleFBO;
::glGenRenderbuffers(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
::glGenRenderbuffers(1, &m_multisampleDepthStencilBuffer);
}
}
#if !USE(OPENGL_ES_2)
::glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
if (GLContext::current()->version() >= 320) {
// From version 3.2 on we use the OpenGL Core profile, so request that ouput to the shader compiler.
// OpenGL version 3.2 uses GLSL version 1.50.
m_compiler = ANGLEWebKitBridge(SH_GLSL_150_CORE_OUTPUT);
// From version 3.2 on we use the OpenGL Core profile, and we need a VAO for rendering.
// A VAO could be created and bound by each component using GL rendering (TextureMapper, WebGL, etc). This is
// a simpler solution: the first GraphicsContext3D created on a GLContext will create and bind a VAO for that context.
GC3Dint currentVAO = 0;
getIntegerv(GraphicsContext3D::VERTEX_ARRAY_BINDING, ¤tVAO);
if (!currentVAO) {
m_vao = createVertexArray();
bindVertexArray(m_vao);
}
} else {
// For lower versions request the compatibility output to the shader compiler.
m_compiler = ANGLEWebKitBridge(SH_GLSL_COMPATIBILITY_OUTPUT);
// GL_POINT_SPRITE is needed in lower versions.
::glEnable(GL_POINT_SPRITE);
}
#else
m_compiler = ANGLEWebKitBridge(SH_ESSL_OUTPUT);
#endif
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
GC3Dint range[2], precision;
getShaderPrecisionFormat(GraphicsContext3D::FRAGMENT_SHADER, GraphicsContext3D::HIGH_FLOAT, range, &precision);
ANGLEResources.FragmentPrecisionHigh = (range[0] || range[1] || precision);
m_compiler.setResources(ANGLEResources);
::glClearColor(0, 0, 0, 0);
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3D::Attributes attrs, HostWindow* hostWindow, GraphicsContext3D::RenderStyle renderStyle)
: m_currentWidth(0)
, m_currentHeight(0)
, m_compiler(isGLES2Compliant() ? SH_ESSL_OUTPUT : SH_GLSL_OUTPUT)
, m_attrs(attrs)
, m_renderStyle(renderStyle)
, m_texture(0)
, m_compositorTexture(0)
, m_fbo(0)
#if USE(OPENGL_ES_2)
, m_depthBuffer(0)
, m_stencilBuffer(0)
#endif
, m_depthStencilBuffer(0)
, m_layerComposited(false)
, m_internalColorFormat(0)
, m_boundFBO(0)
, m_activeTexture(GL_TEXTURE0)
, m_boundTexture0(0)
, m_multisampleFBO(0)
, m_multisampleDepthStencilBuffer(0)
, m_multisampleColorBuffer(0)
, m_private(adoptPtr(new GraphicsContext3DPrivate(this, hostWindow, renderStyle)))
{
validateAttributes();
if (!m_private)
return;
static bool initializedShims = false;
static bool success = true;
if (!initializedShims) {
success = initializeOpenGLShims();
initializedShims = true;
}
if (!success) {
m_private = nullptr;
return;
}
if (renderStyle == RenderToCurrentGLContext) {
// Evas doesn't allow including gl headers and Evas_GL headers at the same time,
// so we need to query the current gl context/surface here instead of in GraphicsContext3DPrivate.
void* currentContext = (void*)glXGetCurrentContext();
void* currentSurface = (void*)glXGetCurrentDrawable();
m_private->setCurrentGLContext(currentContext, currentSurface);
}
if (renderStyle == RenderOffscreen) {
// Create buffers for the canvas FBO.
glGenFramebuffers(/* count */ 1, &m_fbo);
// Create a texture to render into.
glGenTextures(1, &m_texture);
glBindTexture(GraphicsContext3D::TEXTURE_2D, m_texture);
glTexParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
glTexParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
glTexParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
glTexParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
glBindTexture(GraphicsContext3D::TEXTURE_2D, 0);
// Create a multisample FBO.
if (m_attrs.antialias) {
glGenFramebuffers(1, &m_multisampleFBO);
glBindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
m_boundFBO = m_multisampleFBO;
glGenRenderbuffers(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
glGenRenderbuffers(1, &m_multisampleDepthStencilBuffer);
} else {
// Bind canvas FBO.
glBindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
m_boundFBO = m_fbo;
#if USE(OPENGL_ES_2)
if (m_attrs.depth)
glGenRenderbuffers(1, &m_depthBuffer);
if (m_context->m_attrs.stencil)
glGenRenderbuffers(1, &m_stencilBuffer);
#endif
if (m_attrs.stencil || m_attrs.depth)
glGenRenderbuffers(1, &m_depthStencilBuffer);
}
}
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
m_compiler.setResources(ANGLEResources);
#if !USE(OPENGL_ES_2)
glEnable(GL_POINT_SPRITE);
glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
#endif
}
virtual void SetUp()
{
ShInitBuiltInResources(&mResources);
mCompiler = NULL;
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3D::Attributes attributes, HostWindow*, GraphicsContext3D::RenderStyle renderStyle)
: m_currentWidth(0)
, m_currentHeight(0)
, m_attrs(attributes)
, m_texture(0)
, m_fbo(0)
, m_depthStencilBuffer(0)
, m_multisampleFBO(0)
, m_multisampleDepthStencilBuffer(0)
, m_multisampleColorBuffer(0)
, m_private(GraphicsContext3DPrivate::create(this, renderStyle))
{
makeContextCurrent();
validateAttributes();
if (renderStyle == RenderOffscreen) {
// Create a texture to render into.
::glGenTextures(1, &m_texture);
::glBindTexture(GL_TEXTURE_2D, m_texture);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
::glBindTexture(GL_TEXTURE_2D, 0);
// Create an FBO.
::glGenFramebuffers(1, &m_fbo);
::glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
m_state.boundFBO = m_fbo;
if (!m_attrs.antialias && (m_attrs.stencil || m_attrs.depth))
::glGenRenderbuffers(1, &m_depthStencilBuffer);
// Create a multisample FBO.
if (m_attrs.antialias) {
::glGenFramebuffers(1, &m_multisampleFBO);
::glBindFramebuffer(GL_FRAMEBUFFER, m_multisampleFBO);
m_state.boundFBO = m_multisampleFBO;
::glGenRenderbuffers(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
::glGenRenderbuffers(1, &m_multisampleDepthStencilBuffer);
}
}
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
GC3Dint range[2], precision;
getShaderPrecisionFormat(GraphicsContext3D::FRAGMENT_SHADER, GraphicsContext3D::HIGH_FLOAT, range, &precision);
ANGLEResources.FragmentPrecisionHigh = (range[0] || range[1] || precision);
m_compiler.setResources(ANGLEResources);
#if !USE(OPENGL_ES_2)
::glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
::glEnable(GL_POINT_SPRITE);
#endif
::glClearColor(0, 0, 0, 0);
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3D::Attributes attrs, HostWindow*, GraphicsContext3D::RenderStyle renderStyle)
: m_currentWidth(0)
, m_currentHeight(0)
, m_context(BlackBerry::Platform::Graphics::createWebGLContext())
, m_compiler(SH_ESSL_OUTPUT)
, m_attrs(attrs)
, m_texture(0)
, m_fbo(0)
, m_depthStencilBuffer(0)
, m_layerComposited(false)
, m_internalColorFormat(GL_RGBA)
, m_isImaginationHardware(0)
{
if (renderStyle != RenderDirectlyToHostWindow) {
#if USE(ACCELERATED_COMPOSITING)
m_compositingLayer = WebGLLayerWebKitThread::create();
#endif
makeContextCurrent();
// Create a texture to render into.
::glGenTextures(1, &m_texture);
::glBindTexture(GL_TEXTURE_2D, m_texture);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
::glBindTexture(GL_TEXTURE_2D, 0);
// Create an FBO.
::glGenFramebuffers(1, &m_fbo);
::glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
if (m_attrs.stencil || m_attrs.depth)
::glGenRenderbuffers(1, &m_depthStencilBuffer);
m_state.boundFBO = m_fbo;
#if USE(ACCELERATED_COMPOSITING)
static_cast<WebGLLayerWebKitThread*>(m_compositingLayer.get())->setWebGLContext(this);
#endif
}
makeContextCurrent();
const char* renderer = reinterpret_cast<const char*>(::glGetString(GL_RENDERER));
m_isImaginationHardware = std::strstr(renderer, "PowerVR SGX");
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
GC3Dint range[2], precision;
getShaderPrecisionFormat(GraphicsContext3D::FRAGMENT_SHADER, GraphicsContext3D::HIGH_FLOAT, range, &precision);
ANGLEResources.FragmentPrecisionHigh = (range[0] || range[1] || precision);
m_compiler.setResources(ANGLEResources);
::glClearColor(0, 0, 0, 0);
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3D::Attributes attrs, HostWindow* hostWindow, GraphicsContext3D::RenderStyle renderStyle)
: m_currentWidth(0)
, m_currentHeight(0)
, m_compiler(isGLES2Compliant() ? SH_ESSL_OUTPUT : SH_GLSL_OUTPUT)
, m_attrs(attrs)
, m_renderStyle(renderStyle)
, m_texture(0)
, m_compositorTexture(0)
, m_fbo(0)
#if USE(OPENGL_ES_2)
, m_depthBuffer(0)
, m_stencilBuffer(0)
#endif
, m_depthStencilBuffer(0)
, m_layerComposited(false)
, m_internalColorFormat(0)
, m_multisampleFBO(0)
, m_multisampleDepthStencilBuffer(0)
, m_multisampleColorBuffer(0)
, m_private(GraphicsContext3DPrivate::create(this, hostWindow))
{
if (!m_private)
return;
validateAttributes();
if (renderStyle == RenderOffscreen) {
// Create buffers for the canvas FBO.
glGenFramebuffers(1, &m_fbo);
// Create a texture to render into.
glGenTextures(1, &m_texture);
glBindTexture(GraphicsContext3D::TEXTURE_2D, m_texture);
glTexParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
glTexParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
glTexParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
glTexParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
glBindTexture(GraphicsContext3D::TEXTURE_2D, 0);
// Create a multisample FBO.
if (m_attrs.antialias) {
glGenFramebuffers(1, &m_multisampleFBO);
glBindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
m_state.boundFBO = m_multisampleFBO;
glGenRenderbuffers(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
glGenRenderbuffers(1, &m_multisampleDepthStencilBuffer);
} else {
// Bind canvas FBO.
glBindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
m_state.boundFBO = m_fbo;
#if USE(OPENGL_ES_2)
if (m_attrs.depth)
glGenRenderbuffers(1, &m_depthBuffer);
if (m_attrs.stencil)
glGenRenderbuffers(1, &m_stencilBuffer);
#endif
if (m_attrs.stencil || m_attrs.depth)
glGenRenderbuffers(1, &m_depthStencilBuffer);
}
}
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
ShInitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
GC3Dint range[2], precision;
getShaderPrecisionFormat(GraphicsContext3D::FRAGMENT_SHADER, GraphicsContext3D::HIGH_FLOAT, range, &precision);
ANGLEResources.FragmentPrecisionHigh = (range[0] || range[1] || precision);
m_compiler.setResources(ANGLEResources);
#if !USE(OPENGL_ES_2)
glEnable(GL_POINT_SPRITE);
glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
#endif
if (renderStyle != RenderToCurrentGLContext)
glClearColor(0.0, 0.0, 0.0, 0.0);
}
