| // 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/trace_event/trace_event.h" |
| #include "ui/gl/gl_bindings.h" |
| #include "ui/gl/gl_context.h" |
| #include "ui/gl/gl_context_egl.h" |
| #include "ui/gl/gl_context_stub.h" |
| #include "ui/gl/gl_egl_api_implementation.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_egl.h" |
| #include "ui/gl/gl_surface_stub.h" |
| |
| namespace gl { |
| namespace init { |
| |
| namespace { |
| |
| // Used to render into an already current context+surface, |
| // that we do not have ownership of (draw callback). |
| // TODO(boliu): Make this inherit from GLContextEGL. |
| class GLNonOwnedContext : public GLContextReal { |
| public: |
| explicit GLNonOwnedContext(GLShareGroup* share_group); |
| |
| // Implement GLContext. |
| bool Initialize(GLSurface* compatible_surface, |
| const GLContextAttribs& attribs) override; |
| bool MakeCurrent(GLSurface* surface) override; |
| void ReleaseCurrent(GLSurface* surface) override {} |
| bool IsCurrent(GLSurface* surface) override { return true; } |
| void* GetHandle() override { return nullptr; } |
| |
| protected: |
| ~GLNonOwnedContext() override {} |
| |
| private: |
| EGLDisplay display_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GLNonOwnedContext); |
| }; |
| |
| GLNonOwnedContext::GLNonOwnedContext(GLShareGroup* share_group) |
| : GLContextReal(share_group), display_(nullptr) {} |
| |
| bool GLNonOwnedContext::Initialize(GLSurface* compatible_surface, |
| const GLContextAttribs& attribs) { |
| display_ = eglGetDisplay(EGL_DEFAULT_DISPLAY); |
| return true; |
| } |
| |
| bool GLNonOwnedContext::MakeCurrent(GLSurface* surface) { |
| BindGLApi(); |
| SetCurrent(surface); |
| InitializeDynamicBindings(); |
| return true; |
| } |
| |
| } // namespace |
| |
| std::vector<GLImplementation> GetAllowedGLImplementations() { |
| std::vector<GLImplementation> impls; |
| impls.push_back(kGLImplementationEGLGLES2); |
| impls.push_back(kGLImplementationEGLANGLE); |
| return impls; |
| } |
| |
| bool GetGLWindowSystemBindingInfo(const GLVersionInfo& gl_info, |
| GLWindowSystemBindingInfo* info) { |
| switch (GetGLImplementation()) { |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| return GetGLWindowSystemBindingInfoEGL(info); |
| default: |
| return false; |
| } |
| } |
| |
| scoped_refptr<GLContext> CreateGLContext(GLShareGroup* share_group, |
| GLSurface* compatible_surface, |
| const GLContextAttribs& attribs) { |
| TRACE_EVENT0("gpu", "gl::init::CreateGLContext"); |
| switch (GetGLImplementation()) { |
| case kGLImplementationMockGL: |
| return scoped_refptr<GLContext>(new GLContextStub(share_group)); |
| case kGLImplementationStubGL: { |
| scoped_refptr<GLContextStub> stub_context = |
| new GLContextStub(share_group); |
| stub_context->SetUseStubApi(true); |
| return stub_context; |
| } |
| case kGLImplementationDisabled: |
| NOTREACHED(); |
| return nullptr; |
| default: |
| if (compatible_surface->GetHandle() || |
| compatible_surface->IsSurfaceless()) { |
| return InitializeGLContext(new GLContextEGL(share_group), |
| compatible_surface, attribs); |
| } else { |
| return InitializeGLContext(new GLNonOwnedContext(share_group), |
| compatible_surface, attribs); |
| } |
| } |
| } |
| |
| scoped_refptr<GLSurface> CreateViewGLSurface(gfx::AcceleratedWidget window) { |
| TRACE_EVENT0("gpu", "gl::init::CreateViewGLSurface"); |
| CHECK_NE(kGLImplementationNone, GetGLImplementation()); |
| switch (GetGLImplementation()) { |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| if (window != gfx::kNullAcceleratedWidget) { |
| return InitializeGLSurface(new NativeViewGLSurfaceEGL(window, nullptr)); |
| } else { |
| return InitializeGLSurface(new GLSurfaceStub()); |
| } |
| default: |
| NOTREACHED(); |
| return nullptr; |
| } |
| } |
| |
| scoped_refptr<GLSurface> CreateOffscreenGLSurfaceWithFormat( |
| const gfx::Size& size, GLSurfaceFormat format) { |
| TRACE_EVENT0("gpu", "gl::init::CreateOffscreenGLSurface"); |
| CHECK_NE(kGLImplementationNone, GetGLImplementation()); |
| switch (GetGLImplementation()) { |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: { |
| if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() && |
| (size.width() == 0 && size.height() == 0)) { |
| return InitializeGLSurfaceWithFormat(new SurfacelessEGL(size), format); |
| } else { |
| return InitializeGLSurfaceWithFormat(new PbufferGLSurfaceEGL(size), |
| format); |
| } |
| } |
| 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); |
| switch (implementation) { |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| SetDisabledExtensionsEGL(disabled_extensions); |
| break; |
| case kGLImplementationMockGL: |
| case kGLImplementationStubGL: |
| break; |
| default: |
| NOTREACHED(); |
| } |
| } |
| |
| bool InitializeExtensionSettingsOneOffPlatform() { |
| GLImplementation implementation = GetGLImplementation(); |
| DCHECK_NE(kGLImplementationNone, implementation); |
| switch (implementation) { |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| return InitializeExtensionSettingsOneOffEGL(); |
| case kGLImplementationMockGL: |
| case kGLImplementationStubGL: |
| return true; |
| default: |
| NOTREACHED(); |
| return false; |
| } |
| } |
| |
| } // namespace init |
| } // namespace gl |