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// Copyright 2023 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"
#import <UIKit/UIKit.h>
#include "base/trace_event/trace_event.h"
#include "ui/gl/gl_context_egl.h"
#include "ui/gl/gl_context_stub.h"
#include "ui/gl/gl_surface_egl.h"
#include "ui/gl/gl_surface_stub.h"
namespace gl::init {
std::vector<GLImplementationParts> GetAllowedGLImplementations() {
std::vector<GLImplementationParts> impls;
impls.emplace_back(gl::ANGLEImplementation::kMetal);
return impls;
}
bool GetGLWindowSystemBindingInfo(const GLVersionInfo& gl_info,
GLWindowSystemBindingInfo* info) {
return false;
}
scoped_refptr<GLContext> CreateGLContext(GLShareGroup* share_group,
GLSurface* compatible_surface,
const GLContextAttribs& attribs) {
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;
}
default:
NOTREACHED();
}
}
scoped_refptr<GLSurface> CreateViewGLSurface(GLDisplay* display,
gfx::AcceleratedWidget window) {
TRACE_EVENT0("gpu", "gl::init::CreateViewGLSurface");
CHECK_NE(kGLImplementationNone, GetGLImplementation());
switch (GetGLImplementation()) {
case kGLImplementationEGLANGLE:
if (window != gfx::kNullAcceleratedWidget) {
UIView* view = (__bridge id)(void*)window;
void* layer = (__bridge void*)view.layer;
return InitializeGLSurface(
new NativeViewGLSurfaceEGL(display->GetAs<gl::GLDisplayEGL>(),
layer, /*vsync_provider=*/nullptr));
} else {
return InitializeGLSurface(new GLSurfaceStub());
}
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);
// TODO(zmo): Implement this if needs arise.
}
bool InitializeExtensionSettingsOneOffPlatform(GLDisplay* display) {
GLImplementation implementation = GetGLImplementation();
DCHECK_NE(kGLImplementationNone, implementation);
// TODO(zmo): Implement this if needs arise.
return true;
}
} // namespace gl::init
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