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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/vr/cmd_buffer_surface_provider.h"
#include "base/check_op.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/gles2_lib.h"
#include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
#include "third_party/skia/include/gpu/ganesh/GrDirectContext.h"
#include "third_party/skia/include/gpu/ganesh/gl/GrGLDirectContext.h"
#include "third_party/skia/include/gpu/ganesh/gl/GrGLInterface.h"
#include "ui/gfx/geometry/size.h"
namespace vr {
CmdBufferSurfaceProvider::CmdBufferSurfaceProvider() {
auto* gles2_implementation =
static_cast<gpu::gles2::GLES2Implementation*>(gles2::GetGLContext());
DCHECK(gles2_implementation);
sk_sp<const GrGLInterface> gr_interface =
skia_bindings::CreateGLES2InterfaceBindings(gles2_implementation,
gles2_implementation);
gr_context_ = GrDirectContexts::MakeGL(std::move(gr_interface));
DCHECK(gr_context_);
}
CmdBufferSurfaceProvider::~CmdBufferSurfaceProvider() = default;
std::unique_ptr<SkiaSurfaceProvider::Texture>
CmdBufferSurfaceProvider::CreateTextureWithSkia(
const gfx::Size& size,
base::FunctionRef<void(SkCanvas*)> paint) {
// We need to store and restore previous FBO after skia draw.
GLint prev_fbo = 0;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &prev_fbo);
auto texture = CreateTextureWithSkiaImpl(gr_context_.get(), size, paint);
gr_context_->resetContext();
glBindFramebuffer(GL_FRAMEBUFFER, prev_fbo);
return texture;
}
} // namespace vr
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