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// Copyright (c) 2011 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 "gpu/command_buffer/service/gpu_scheduler.h"
#include "ui/gfx/gl/gl_context.h"
#include "ui/gfx/gl/gl_share_group.h"
#include "ui/gfx/gl/gl_surface.h"
#if defined(TOUCH_UI)
#include "third_party/angle/include/EGL/egl.h"
#include "third_party/angle/include/EGL/eglext.h"
#include "ui/gfx/gl/gl_surface_egl.h"
#include "ui/gfx/gl/gl_bindings.h"
#endif
using ::base::SharedMemory;
namespace gpu {
bool GpuScheduler::Initialize(
gfx::PluginWindowHandle window,
const gfx::Size& size,
const gles2::DisallowedExtensions& disallowed_extensions,
const char* allowed_extensions,
const std::vector<int32>& attribs,
gfx::GLShareGroup* share_group) {
// Create either a view or pbuffer based GLSurface.
scoped_refptr<gfx::GLSurface> surface;
#if defined(TOUCH_UI)
surface = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
#else
if (window)
surface = gfx::GLSurface::CreateViewGLSurface(window);
else
surface = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
#endif
if (!surface.get()) {
LOG(ERROR) << "GpuScheduler::Initialize failed.\n";
Destroy();
return false;
}
// Create a GLContext and attach the surface.
scoped_refptr<gfx::GLContext> context(
gfx::GLContext::CreateGLContext(share_group, surface.get()));
if (!context.get()) {
LOG(ERROR) << "CreateGLContext failed.\n";
Destroy();
return false;
}
return InitializeCommon(surface,
context,
size,
disallowed_extensions,
allowed_extensions,
attribs);
}
void GpuScheduler::Destroy() {
DestroyCommon();
}
void GpuScheduler::WillSwapBuffers() {
#if defined(TOUCH_UI)
front_surface_.swap(back_surface_);
DCHECK_NE(front_surface_.get(), static_cast<AcceleratedSurface*>(NULL));
gfx::Size expected_size = front_surface_->size();
if (!back_surface_.get() || back_surface_->size() != expected_size) {
wrapped_resize_callback_->Run(expected_size);
} else {
glFramebufferTexture2DEXT(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D,
back_surface_->texture(),
0);
}
++swap_buffers_count_;
glFlush();
#endif
if (wrapped_swap_buffers_callback_.get()) {
wrapped_swap_buffers_callback_->Run();
}
}
#if defined(TOUCH_UI)
uint64 GpuScheduler::GetBackSurfaceId() {
if (!back_surface_.get())
return 0;
return back_surface_->pixmap();
}
uint64 GpuScheduler::GetFrontSurfaceId() {
if (!front_surface_.get())
return 0;
return front_surface_->pixmap();
}
uint64 GpuScheduler::swap_buffers_count() const {
return swap_buffers_count_;
}
uint64 GpuScheduler::acknowledged_swap_buffers_count() const {
return acknowledged_swap_buffers_count_;
}
void GpuScheduler::set_acknowledged_swap_buffers_count(
uint64 acknowledged_swap_buffers_count) {
acknowledged_swap_buffers_count_ = acknowledged_swap_buffers_count;
}
void GpuScheduler::CreateBackSurface(const gfx::Size& size) {
decoder()->ResizeOffscreenFrameBuffer(size);
decoder()->UpdateOffscreenFrameBufferSize();
back_surface_ = new AcceleratedSurface(size);
surfaces_[back_surface_->pixmap()] = back_surface_;
glFramebufferTexture2DEXT(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D,
back_surface_->texture(),
0);
glFlush();
}
void GpuScheduler::ReleaseSurface(uint64 surface_id) {
DCHECK_NE(surfaces_[surface_id].get(), back_surface_.get());
DCHECK_NE(surfaces_[surface_id].get(), front_surface_.get());
surfaces_.erase(surface_id);
}
#endif
} // namespace gpu
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