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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/check_op.h"
#include "base/notreached.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_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_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(kGLImplementationEGLANGLE);
impls.push_back(kGLImplementationDesktopGL);
impls.push_back(kGLImplementationSwiftShaderGL);
return impls;
}
bool GetGLWindowSystemBindingInfo(const GLVersionInfo& gl_info,
GLWindowSystemBindingInfo* info) {
switch (GetGLImplementation()) {
case kGLImplementationDesktopGL:
return GetGLWindowSystemBindingInfoWGL(info);
case kGLImplementationEGLANGLE:
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 kGLImplementationSwiftShaderGL:
case kGLImplementationEGLANGLE:
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 kGLImplementationSwiftShaderGL:
case kGLImplementationEGLANGLE: {
DCHECK_NE(window, gfx::kNullAcceleratedWidget);
return InitializeGLSurface(base::MakeRefCounted<NativeViewGLSurfaceEGL>(
window, std::make_unique<VSyncProviderWin>(window)));
}
case kGLImplementationDesktopGL:
return InitializeGLSurface(
base::MakeRefCounted<NativeViewGLSurfaceWGL>(window));
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 kGLImplementationSwiftShaderGL:
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 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 kGLImplementationEGLANGLE:
SetDisabledExtensionsEGL(disabled_extensions);
break;
case kGLImplementationSwiftShaderGL:
case kGLImplementationMockGL:
case kGLImplementationStubGL:
break;
default:
NOTREACHED();
}
}
bool InitializeExtensionSettingsOneOffPlatform() {
GLImplementation implementation = GetGLImplementation();
DCHECK_NE(kGLImplementationNone, implementation);
switch (implementation) {
case kGLImplementationDesktopGL:
return InitializeExtensionSettingsOneOffWGL();
case kGLImplementationEGLANGLE:
return InitializeExtensionSettingsOneOffEGL();
case kGLImplementationSwiftShaderGL:
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return true;
default:
NOTREACHED();
return false;
}
}
} // namespace init
} // namespace gl
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