| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/gl/init/gl_factory.h" |
| |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/trace_event/trace_event.h" |
| #include "ui/gl/gl_bindings.h" |
| #include "ui/gl/gl_context_cgl.h" |
| #include "ui/gl/gl_context_stub.h" |
| #include "ui/gl/gl_features.h" |
| #include "ui/gl/gl_implementation.h" |
| #include "ui/gl/gl_share_group.h" |
| #include "ui/gl/gl_surface.h" |
| #include "ui/gl/gl_surface_stub.h" |
| #include "ui/gl/gl_switches.h" |
| |
| #if BUILDFLAG(USE_EGL_ON_MAC) |
| #include "ui/gl/gl_context_egl.h" |
| #include "ui/gl/gl_surface_egl.h" |
| #endif // BUILDFLAG(USE_EGL_ON_MAC) |
| |
| namespace gl { |
| namespace init { |
| |
| namespace { |
| |
| // A "no-op" surface. It is not required that a CGLContextObj have an |
| // associated drawable (pbuffer or fullscreen context) in order to be |
| // made current. Everywhere this surface type is used, we allocate an |
| // FBO at the user level as the drawable of the associated context. |
| class NoOpGLSurface : public GLSurface { |
| public: |
| explicit NoOpGLSurface(const gfx::Size& size) : size_(size) {} |
| |
| // Implement GLSurface. |
| bool Initialize(GLSurfaceFormat format) override { return true; } |
| void Destroy() override {} |
| bool IsOffscreen() override { return true; } |
| gfx::SwapResult SwapBuffers(const PresentationCallback& callback) override { |
| NOTREACHED() << "Cannot call SwapBuffers on a NoOpGLSurface."; |
| return gfx::SwapResult::SWAP_FAILED; |
| } |
| gfx::Size GetSize() override { return size_; } |
| void* GetHandle() override { return nullptr; } |
| void* GetDisplay() override { return nullptr; } |
| bool IsSurfaceless() const override { return true; } |
| GLSurfaceFormat GetFormat() override { return GLSurfaceFormat(); } |
| |
| protected: |
| ~NoOpGLSurface() override {} |
| |
| private: |
| gfx::Size size_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NoOpGLSurface); |
| }; |
| |
| } // namespace |
| |
| std::vector<GLImplementation> GetAllowedGLImplementations() { |
| std::vector<GLImplementation> impls; |
| impls.push_back(kGLImplementationDesktopGLCoreProfile); |
| #if BUILDFLAG(USE_EGL_ON_MAC) |
| impls.push_back(kGLImplementationEGLGLES2); |
| impls.push_back(kGLImplementationSwiftShaderGL); |
| #endif // BUILDFLAG(USE_EGL_ON_MAC) |
| impls.push_back(kGLImplementationDesktopGL); |
| impls.push_back(kGLImplementationAppleGL); |
| return impls; |
| } |
| |
| bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) { |
| return false; |
| } |
| |
| scoped_refptr<GLContext> CreateGLContext(GLShareGroup* share_group, |
| GLSurface* compatible_surface, |
| const GLContextAttribs& attribs) { |
| TRACE_EVENT0("gpu", "gl::init::CreateGLContext"); |
| switch (GetGLImplementation()) { |
| case kGLImplementationDesktopGL: |
| case kGLImplementationDesktopGLCoreProfile: |
| case kGLImplementationAppleGL: |
| return InitializeGLContext(new GLContextCGL(share_group), |
| compatible_surface, attribs); |
| #if BUILDFLAG(USE_EGL_ON_MAC) |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationSwiftShaderGL: |
| return InitializeGLContext(new GLContextEGL(share_group), |
| compatible_surface, attribs); |
| #endif // BUILDFLAG(USE_EGL_ON_MAC) |
| case kGLImplementationMockGL: |
| return new GLContextStub(share_group); |
| case kGLImplementationStubGL: { |
| scoped_refptr<GLContextStub> stub_context = |
| new GLContextStub(share_group); |
| stub_context->SetUseStubApi(true); |
| return stub_context; |
| } |
| default: |
| NOTREACHED(); |
| return nullptr; |
| } |
| } |
| |
| scoped_refptr<GLSurface> CreateViewGLSurface(gfx::AcceleratedWidget window) { |
| TRACE_EVENT0("gpu", "gl::init::CreateViewGLSurface"); |
| switch (GetGLImplementation()) { |
| case kGLImplementationDesktopGL: |
| case kGLImplementationDesktopGLCoreProfile: |
| case kGLImplementationAppleGL: |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationSwiftShaderGL: { |
| NOTIMPLEMENTED() << "No onscreen support on Mac."; |
| return nullptr; |
| } |
| case kGLImplementationMockGL: |
| case kGLImplementationStubGL: |
| return new GLSurfaceStub; |
| default: |
| NOTREACHED(); |
| return nullptr; |
| } |
| } |
| |
| scoped_refptr<GLSurface> CreateOffscreenGLSurfaceWithFormat( |
| const gfx::Size& size, GLSurfaceFormat format) { |
| TRACE_EVENT0("gpu", "gl::init::CreateOffscreenGLSurface"); |
| switch (GetGLImplementation()) { |
| case kGLImplementationDesktopGL: |
| case kGLImplementationDesktopGLCoreProfile: |
| case kGLImplementationAppleGL: |
| return InitializeGLSurfaceWithFormat( |
| new NoOpGLSurface(size), format); |
| #if BUILDFLAG(USE_EGL_ON_MAC) |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationSwiftShaderGL: |
| if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() && |
| size.width() == 0 && size.height() == 0) { |
| return InitializeGLSurfaceWithFormat(new SurfacelessEGL(size), format); |
| } else { |
| return InitializeGLSurfaceWithFormat(new PbufferGLSurfaceEGL(size), |
| format); |
| } |
| #endif // BUILDFLAG(USE_EGL_ON_MAC) |
| case kGLImplementationMockGL: |
| case kGLImplementationStubGL: |
| return new GLSurfaceStub; |
| default: |
| NOTREACHED(); |
| return nullptr; |
| } |
| } |
| |
| void SetDisabledExtensionsPlatform(const std::string& disabled_extensions) { |
| GLImplementation implementation = GetGLImplementation(); |
| DCHECK_NE(kGLImplementationNone, implementation); |
| // TODO(zmo): Implement this if needs arise. |
| } |
| |
| bool InitializeExtensionSettingsOneOffPlatform() { |
| GLImplementation implementation = GetGLImplementation(); |
| DCHECK_NE(kGLImplementationNone, implementation); |
| // TODO(zmo): Implement this if needs arise. |
| return true; |
| } |
| |
| } // namespace init |
| } // namespace gl |