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// Copyright (c) 2012 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 "ppapi/shared_impl/ppb_graphics_3d_shared.h"
#include "base/logging.h"
#include "gpu/command_buffer/client/gles2_cmd_helper.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/transfer_buffer.h"
#include "ppapi/c/pp_errors.h"
namespace ppapi {
PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(PP_Instance instance)
: Resource(instance) {
}
PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(const HostResource& host_resource)
: Resource(host_resource) {
}
PPB_Graphics3D_Shared::~PPB_Graphics3D_Shared() {
// Make sure that GLES2 implementation has already been destroyed.
DCHECK(!gles2_helper_.get());
DCHECK(!transfer_buffer_.get());
DCHECK(!gles2_impl_.get());
}
thunk::PPB_Graphics3D_API* PPB_Graphics3D_Shared::AsPPB_Graphics3D_API() {
return this;
}
int32_t PPB_Graphics3D_Shared::GetAttribs(int32_t* attrib_list) {
// TODO(alokp): Implement me.
return PP_ERROR_FAILED;
}
int32_t PPB_Graphics3D_Shared::SetAttribs(int32_t* attrib_list) {
// TODO(alokp): Implement me.
return PP_ERROR_FAILED;
}
int32_t PPB_Graphics3D_Shared::GetError() {
// TODO(alokp): Implement me.
return PP_ERROR_FAILED;
}
int32_t PPB_Graphics3D_Shared::ResizeBuffers(int32_t width, int32_t height) {
if ((width < 0) || (height < 0))
return PP_ERROR_BADARGUMENT;
gles2_impl()->ResizeCHROMIUM(width, height);
// TODO(alokp): Check if resize succeeded and return appropriate error code.
return PP_OK;
}
int32_t PPB_Graphics3D_Shared::SwapBuffers(PP_CompletionCallback callback) {
if (!callback.func) {
// Blocking SwapBuffers isn't supported (since we have to be on the main
// thread).
return PP_ERROR_BADARGUMENT;
}
if (HasPendingSwap()) {
// Already a pending SwapBuffers that hasn't returned yet.
return PP_ERROR_INPROGRESS;
}
swap_callback_ = new TrackedCallback(this, callback);
return DoSwapBuffers();
}
void* PPB_Graphics3D_Shared::MapTexSubImage2DCHROMIUM(GLenum target,
GLint level,
GLint xoffset,
GLint yoffset,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
GLenum access) {
return gles2_impl_->MapTexSubImage2DCHROMIUM(
target, level, xoffset, yoffset, width, height, format, type, access);
}
void PPB_Graphics3D_Shared::UnmapTexSubImage2DCHROMIUM(const void* mem) {
gles2_impl_->UnmapTexSubImage2DCHROMIUM(mem);
}
void PPB_Graphics3D_Shared::SwapBuffersACK(int32_t pp_error) {
DCHECK(HasPendingSwap());
TrackedCallback::ClearAndRun(&swap_callback_, pp_error);
}
bool PPB_Graphics3D_Shared::HasPendingSwap() const {
return TrackedCallback::IsPending(swap_callback_);
}
bool PPB_Graphics3D_Shared::CreateGLES2Impl(int32 command_buffer_size,
int32 transfer_buffer_size) {
gpu::CommandBuffer* command_buffer = GetCommandBuffer();
DCHECK(command_buffer);
// Create the GLES2 helper, which writes the command buffer protocol.
gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer));
if (!gles2_helper_->Initialize(command_buffer_size))
return false;
// Create a transfer buffer used to copy resources between the renderer
// process and the GPU process.
const int32 kMinTransferBufferSize = 256 * 1024;
const int32 kMaxTransferBufferSize = 16 * 1024 * 1024;
transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
// Create the object exposing the OpenGL API.
gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
gles2_helper_.get(),
transfer_buffer_.get(),
false,
true));
if (!gles2_impl_->Initialize(
transfer_buffer_size,
kMinTransferBufferSize,
std::max(kMaxTransferBufferSize, transfer_buffer_size))) {
return false;
}
return true;
}
void PPB_Graphics3D_Shared::DestroyGLES2Impl() {
gles2_impl_.reset();
transfer_buffer_.reset();
gles2_helper_.reset();
}
} // namespace ppapi
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