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// Copyright 2013 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/gl_image_io_surface.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/io_surface_support_mac.h"
namespace gfx {
GLImageIOSurface::GLImageIOSurface(gfx::Size size)
: io_surface_support_(IOSurfaceSupport::Initialize()),
size_(size) {
CHECK(io_surface_support_);
}
GLImageIOSurface::~GLImageIOSurface() {
Destroy();
}
bool GLImageIOSurface::Initialize(gfx::GpuMemoryBufferHandle buffer) {
io_surface_.reset(io_surface_support_->IOSurfaceLookup(buffer.io_surface_id));
if (!io_surface_) {
LOG(ERROR) << "IOSurface lookup failed";
return false;
}
return true;
}
void GLImageIOSurface::Destroy() {
}
gfx::Size GLImageIOSurface::GetSize() {
return size_;
}
bool GLImageIOSurface::BindTexImage(unsigned target) {
if (target != GL_TEXTURE_RECTANGLE_ARB) {
// This might be supported in the future. For now, perform strict
// validation so we know what's going on.
LOG(ERROR) << "IOSurface requires TEXTURE_RECTANGLE_ARB target";
return false;
}
CGLContextObj cgl_context = static_cast<CGLContextObj>(
GLContext::GetCurrent()->GetHandle());
DCHECK(io_surface_);
CGLError cgl_error = io_surface_support_->CGLTexImageIOSurface2D(
cgl_context,
target,
GL_RGBA,
size_.width(),
size_.height(),
GL_BGRA,
GL_UNSIGNED_INT_8_8_8_8_REV,
io_surface_.get(),
0);
if (cgl_error != kCGLNoError) {
LOG(ERROR) << "Error in CGLTexImageIOSurface2D";
return false;
}
return true;
}
void GLImageIOSurface::ReleaseTexImage(unsigned target) {
}
void GLImageIOSurface::WillUseTexImage() {
}
void GLImageIOSurface::DidUseTexImage() {
}
void GLImageIOSurface::WillModifyTexImage() {
}
void GLImageIOSurface::DidModifyTexImage() {
}
} // namespace gfx
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