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// 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_context.h"
#include "ui/gl/gl_context_egl.h"
#include "ui/gl/gl_context_osmesa.h"
#include "ui/gl/gl_context_stub.h"
#include "ui/gl/gl_context_wgl.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_osmesa.h"
#include "ui/gl/gl_surface_osmesa_win.h"
#include "ui/gl/gl_surface_stub.h"
#include "ui/gl/gl_surface_wgl.h"
#include "ui/gl/gl_wgl_api_implementation.h"
#include "ui/gl/vsync_provider_win.h"
namespace gl {
namespace init {
std::vector<GLImplementation> GetAllowedGLImplementations() {
std::vector<GLImplementation> impls;
impls.push_back(kGLImplementationEGLGLES2);
impls.push_back(kGLImplementationDesktopGL);
impls.push_back(kGLImplementationOSMesaGL);
impls.push_back(kGLImplementationSwiftShaderGL);
return impls;
}
bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
switch (GetGLImplementation()) {
case kGLImplementationDesktopGL:
return GetGLWindowSystemBindingInfoWGL(info);
case kGLImplementationEGLGLES2:
return GetGLWindowSystemBindingInfoEGL(info);
default:
return false;
}
}
#if !defined(TOOLKIT_QT)
scoped_refptr<GLContext> CreateGLContext(GLShareGroup* share_group,
GLSurface* compatible_surface,
const GLContextAttribs& attribs) {
TRACE_EVENT0("gpu", "gl::init::CreateGLContext");
switch (GetGLImplementation()) {
case kGLImplementationOSMesaGL:
return InitializeGLContext(new GLContextOSMesa(share_group),
compatible_surface, attribs);
case kGLImplementationSwiftShaderGL:
case kGLImplementationEGLGLES2:
return InitializeGLContext(new GLContextEGL(share_group),
compatible_surface, attribs);
case kGLImplementationDesktopGL:
return InitializeGLContext(new GLContextWGL(share_group),
compatible_surface, attribs);
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 kGLImplementationOSMesaGL:
return InitializeGLSurface(new GLSurfaceOSMesaWin(window));
case kGLImplementationSwiftShaderGL:
case kGLImplementationEGLGLES2: {
std::unique_ptr<gfx::VSyncProvider> sync_provider(
new VSyncProviderWin(window));
return CreateNativeViewGLSurfaceEGL(window, std::move(sync_provider));
}
case kGLImplementationDesktopGL:
return InitializeGLSurface(new NativeViewGLSurfaceWGL(window));
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return new GLSurfaceStub;
default:
NOTREACHED();
return nullptr;
}
}
scoped_refptr<GLSurface> CreateNativeViewGLSurfaceEGL(
gfx::AcceleratedWidget window,
std::unique_ptr<gfx::VSyncProvider> sync_provider) {
DCHECK_EQ(kGLImplementationEGLGLES2, GetGLImplementation());
DCHECK(window != gfx::kNullAcceleratedWidget);
return InitializeGLSurface(
new NativeViewGLSurfaceEGL(window, std::move(sync_provider)));
}
scoped_refptr<GLSurface> CreateOffscreenGLSurfaceWithFormat(
const gfx::Size& size, GLSurfaceFormat format) {
TRACE_EVENT0("gpu", "gl::init::CreateOffscreenGLSurface");
switch (GetGLImplementation()) {
case kGLImplementationOSMesaGL:
format.SetDefaultPixelLayout(GLSurfaceFormat::PIXEL_LAYOUT_RGBA);
return InitializeGLSurfaceWithFormat(
new GLSurfaceOSMesa(format, size), format);
case kGLImplementationSwiftShaderGL:
case kGLImplementationEGLGLES2:
if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() &&
size.width() == 0 && size.height() == 0) {
return InitializeGLSurfaceWithFormat(new SurfacelessEGL(size), format);
} else {
return InitializeGLSurfaceWithFormat(new PbufferGLSurfaceEGL(size),
format);
}
case kGLImplementationDesktopGL:
return InitializeGLSurfaceWithFormat(
new PbufferGLSurfaceWGL(size), format);
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return new GLSurfaceStub;
default:
NOTREACHED();
return nullptr;
}
}
#endif
void SetDisabledExtensionsPlatform(const std::string& disabled_extensions) {
GLImplementation implementation = GetGLImplementation();
DCHECK_NE(kGLImplementationNone, implementation);
switch (implementation) {
case kGLImplementationDesktopGL:
SetDisabledExtensionsWGL(disabled_extensions);
break;
case kGLImplementationEGLGLES2:
SetDisabledExtensionsEGL(disabled_extensions);
break;
case kGLImplementationSwiftShaderGL:
case kGLImplementationOSMesaGL:
case kGLImplementationMockGL:
case kGLImplementationStubGL:
break;
default:
NOTREACHED();
}
}
bool InitializeExtensionSettingsOneOffPlatform() {
GLImplementation implementation = GetGLImplementation();
DCHECK_NE(kGLImplementationNone, implementation);
switch (implementation) {
case kGLImplementationDesktopGL:
return InitializeExtensionSettingsOneOffWGL();
case kGLImplementationEGLGLES2:
return InitializeExtensionSettingsOneOffEGL();
case kGLImplementationSwiftShaderGL:
case kGLImplementationOSMesaGL:
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return true;
default:
NOTREACHED();
return false;
}
}
} // namespace init
} // namespace gl
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