static void setup_framebuffer(const GrGLInterface* gl, int screenWidth, int screenHeight) { //Setup framebuffer GrGLuint texture; GR_GL_CALL(gl, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); GR_GL_CALL(gl, PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); GR_GL_CALL(gl, GenTextures(1, &texture)); GR_GL_CALL(gl, ActiveTexture(GR_GL_TEXTURE15)); GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, texture)); GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_MAG_FILTER, GR_GL_NEAREST)); GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_MIN_FILTER, GR_GL_NEAREST)); GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_WRAP_S, GR_GL_CLAMP_TO_EDGE)); GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_WRAP_T, GR_GL_CLAMP_TO_EDGE)); GR_GL_CALL(gl, TexImage2D(GR_GL_TEXTURE_2D, 0, //level GR_GL_RGBA8, //internal format screenWidth, // width screenHeight, // height 0, //border GR_GL_RGBA, //format GR_GL_UNSIGNED_BYTE, // type NULL)); // bind framebuffer GrGLuint framebuffer; GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, 0)); GR_GL_CALL(gl, GenFramebuffers(1, &framebuffer)); GR_GL_CALL(gl, BindFramebuffer(GR_GL_FRAMEBUFFER, framebuffer)); GR_GL_CALL(gl, FramebufferTexture2D(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, GR_GL_TEXTURE_2D, texture, 0)); GR_GL_CALL(gl, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); GR_GL_CALL(gl, Viewport(0, 0, screenWidth, screenHeight)); }
bool SkGLContextHelper::init(int width, int height) { if (fGL) { fGL->unref(); this->destroyGLContext(); } fGL = this->createGLContext(); if (fGL) { const GrGLubyte* temp; GrGLBinding bindingInUse = GrGLGetBindingInUse(this->gl()); if (!fGL->validate(bindingInUse) || !fExtensions.init(bindingInUse, fGL)) { fGL = NULL; this->destroyGLContext(); return false; } SK_GL_RET(*this, temp, GetString(GR_GL_VERSION)); const char* versionStr = reinterpret_cast<const char*>(temp); GrGLVersion version = GrGLGetVersionFromString(versionStr); // clear any existing GL erorrs GrGLenum error; do { SK_GL_RET(*this, error, GetError()); } while (GR_GL_NO_ERROR != error); SK_GL(*this, GenFramebuffers(1, &fFBO)); SK_GL(*this, BindFramebuffer(GR_GL_FRAMEBUFFER, fFBO)); SK_GL(*this, GenRenderbuffers(1, &fColorBufferID)); SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, fColorBufferID)); if (kES_GrGLBinding == bindingInUse) { SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_RGBA8, width, height)); } else { SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_RGBA, width, height)); } SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, GR_GL_RENDERBUFFER, fColorBufferID)); SK_GL(*this, GenRenderbuffers(1, &fDepthStencilBufferID)); SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, fDepthStencilBufferID)); // Some drivers that support packed depth stencil will only succeed // in binding a packed format an FBO. However, we can't rely on packed // depth stencil being available. bool supportsPackedDepthStencil; if (kES_GrGLBinding == bindingInUse) { supportsPackedDepthStencil = version >= GR_GL_VER(3,0) || this->hasExtension("GL_OES_packed_depth_stencil"); } else { supportsPackedDepthStencil = version >= GR_GL_VER(3,0) || this->hasExtension("GL_EXT_packed_depth_stencil") || this->hasExtension("GL_ARB_framebuffer_object"); } if (supportsPackedDepthStencil) { // ES2 requires sized internal formats for RenderbufferStorage // On Desktop we let the driver decide. GrGLenum format = kES_GrGLBinding == bindingInUse ? GR_GL_DEPTH24_STENCIL8 : GR_GL_DEPTH_STENCIL; SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, format, width, height)); SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_DEPTH_ATTACHMENT, GR_GL_RENDERBUFFER, fDepthStencilBufferID)); } else { GrGLenum format = kES_GrGLBinding == bindingInUse ? GR_GL_STENCIL_INDEX8 : GR_GL_STENCIL_INDEX; SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, format, width, height)); } SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_STENCIL_ATTACHMENT, GR_GL_RENDERBUFFER, fDepthStencilBufferID)); SK_GL(*this, Viewport(0, 0, width, height)); SK_GL(*this, ClearStencil(0)); SK_GL(*this, Clear(GR_GL_STENCIL_BUFFER_BIT)); SK_GL_RET(*this, error, GetError()); GrGLenum status; SK_GL_RET(*this, status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); if (GR_GL_FRAMEBUFFER_COMPLETE != status || GR_GL_NO_ERROR != error) { fFBO = 0; fColorBufferID = 0; fDepthStencilBufferID = 0; fGL->unref(); fGL = NULL; this->destroyGLContext(); return false; } else { return true; } } return false; }
GLuint GLInterfaceWrapper::CreateFramebuffer() const { GLuint buffer = 0; GenFramebuffers( 1, &buffer ); return buffer; }
void GL::Initialize() { MOZ_ASSERT(IsCurrent()); memset(mSupportedExtensions, 0, sizeof(mSupportedExtensions)); stringstream extensions(reinterpret_cast<const char*>(GetString(GL_EXTENSIONS))); istream_iterator<string> iter(extensions); istream_iterator<string> end; for (; iter != end; iter++) { const string& extension = *iter; if (*iter == "GL_EXT_direct_state_access") { mSupportedExtensions[EXT_direct_state_access] = true; continue; } if (*iter == "GL_NV_path_rendering") { mSupportedExtensions[NV_path_rendering] = true; continue; } if (*iter == "GL_EXT_framebuffer_multisample") { mSupportedExtensions[EXT_framebuffer_multisample] = true; continue; } if (*iter == "GL_EXT_framebuffer_blit") { mSupportedExtensions[EXT_framebuffer_blit] = true; continue; } if (*iter == "GL_EXT_texture_filter_anisotropic") { mSupportedExtensions[EXT_texture_filter_anisotropic] = true; continue; } } GetIntegerv(GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize); GetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); GetIntegerv(GL_MAX_CLIP_PLANES, &mMaxClipPlanes); if (HasExtension(EXT_texture_filter_anisotropic)) { GetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &mMaxAnisotropy); } else { mMaxAnisotropy = 1; } GenFramebuffers(1, &mTextureFramebuffer1D); GenFramebuffers(1, &mTextureFramebuffer2D); TexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); TexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); EnableClientState(GL_VERTEX_ARRAY); EnableClientState(GL_TEXTURE_COORD_ARRAY); DebugMessageCallback(GLDebugCallback, nullptr); DebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, nullptr, GL_TRUE); Enable(GL_DEBUG_OUTPUT); mIsValid = true; }
bool SkGLContext::init(int width, int height) { if (fGL) { fGL->unref(); this->destroyGLContext(); } fGL = this->createGLContext(); if (fGL) { // clear any existing GL erorrs GrGLenum error; do { error = SK_GL(*this, GetError()); } while (GR_GL_NO_ERROR != error); GrGLuint cbID; GrGLuint dsID; SK_GL(*this, GenFramebuffers(1, &fFBO)); SK_GL(*this, BindFramebuffer(GR_GL_FRAMEBUFFER, fFBO)); SK_GL(*this, GenRenderbuffers(1, &cbID)); SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, cbID)); if (fGL->supportsES2()) { SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_RGBA8, width, height)); } else { SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_RGBA, width, height)); } SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, GR_GL_RENDERBUFFER, cbID)); SK_GL(*this, GenRenderbuffers(1, &dsID)); SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, dsID)); if (fGL->supportsES2()) { SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_STENCIL_INDEX8, width, height)); } else { SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, GR_GL_DEPTH_STENCIL, width, height)); SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_DEPTH_ATTACHMENT, GR_GL_RENDERBUFFER, dsID)); } SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_STENCIL_ATTACHMENT, GR_GL_RENDERBUFFER, dsID)); SK_GL(*this, Viewport(0, 0, width, height)); SK_GL(*this, ClearStencil(0)); SK_GL(*this, Clear(GR_GL_STENCIL_BUFFER_BIT)); error = SK_GL(*this, GetError()); GrGLenum status = SK_GL(*this, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); if (GR_GL_FRAMEBUFFER_COMPLETE != status || GR_GL_NO_ERROR != error) { fFBO = 0; fGL->unref(); fGL = NULL; this->destroyGLContext(); return false; } else { return true; } } return false; }