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// Copyright 2016 The Chromium Authors
// 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_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/vsync_provider_win.h"
namespace gl {
namespace init {
std::vector<GLImplementationParts> GetAllowedGLImplementations() {
std::vector<GLImplementationParts> impls;
impls.emplace_back(kGLImplementationEGLANGLE);
return impls;
}
bool GetGLWindowSystemBindingInfo(const GLVersionInfo& gl_info,
GLWindowSystemBindingInfo* info) {
switch (GetGLImplementation()) {
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 kGLImplementationEGLANGLE:
return InitializeGLContext(new GLContextEGL(share_group),
compatible_surface, attribs);
case kGLImplementationMockGL:
case kGLImplementationStubGL: {
scoped_refptr<GLContextStub> stub_context =
base::MakeRefCounted<GLContextStub>(share_group);
if (GetGLImplementation() == kGLImplementationStubGL) {
stub_context->SetUseStubApi(true);
}
// The stub ctx needs to be initialized so that the gl::GLContext can
// store the |compatible_surface|.
stub_context->Initialize(compatible_surface, attribs);
return stub_context;
}
case kGLImplementationDisabled:
return nullptr;
default:
DUMP_WILL_BE_NOTREACHED();
return nullptr;
}
}
scoped_refptr<GLSurface> CreateViewGLSurface(GLDisplay* display,
gfx::AcceleratedWidget window) {
TRACE_EVENT0("gpu", "gl::init::CreateViewGLSurface");
switch (GetGLImplementation()) {
case kGLImplementationEGLANGLE: {
DCHECK_NE(window, gfx::kNullAcceleratedWidget);
return InitializeGLSurface(base::MakeRefCounted<NativeViewGLSurfaceEGL>(
display->GetAs<gl::GLDisplayEGL>(), window,
std::make_unique<VSyncProviderWin>(window)));
}
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return InitializeGLSurface(new GLSurfaceStub());
default:
NOTREACHED();
}
}
scoped_refptr<GLSurface> CreateOffscreenGLSurface(GLDisplay* display,
const gfx::Size& size) {
TRACE_EVENT0("gpu", "gl::init::CreateOffscreenGLSurface");
switch (GetGLImplementation()) {
case kGLImplementationEGLANGLE: {
GLDisplayEGL* display_egl = display->GetAs<gl::GLDisplayEGL>();
if (display_egl->IsEGLSurfacelessContextSupported() &&
size.width() == 0 && size.height() == 0) {
return InitializeGLSurface(new SurfacelessEGL(display_egl, size));
} else {
return InitializeGLSurface(new PbufferGLSurfaceEGL(display_egl, size));
}
}
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return InitializeGLSurface(new GLSurfaceStub());
default:
NOTREACHED();
}
}
void SetDisabledExtensionsPlatform(const std::string& disabled_extensions) {
GLImplementation implementation = GetGLImplementation();
DCHECK_NE(kGLImplementationNone, implementation);
switch (implementation) {
case kGLImplementationEGLANGLE:
SetDisabledExtensionsEGL(disabled_extensions);
break;
case kGLImplementationMockGL:
case kGLImplementationStubGL:
break;
default:
NOTREACHED();
}
}
bool InitializeExtensionSettingsOneOffPlatform(GLDisplay* display) {
GLImplementation implementation = GetGLImplementation();
DCHECK_NE(kGLImplementationNone, implementation);
switch (implementation) {
case kGLImplementationEGLANGLE:
return InitializeExtensionSettingsOneOffEGL(
display->GetAs<GLDisplayEGL>());
case kGLImplementationMockGL:
case kGLImplementationStubGL:
return true;
default:
NOTREACHED();
}
}
} // namespace init
} // namespace gl
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