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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 "ppapi/shared_impl/graphics_3d_impl.h"
#include "base/logging.h"
#include "gpu/command_buffer/client/gles2_cmd_helper.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "ppapi/c/pp_errors.h"
namespace ppapi {
Graphics3DImpl::Graphics3DImpl()
: transfer_buffer_id_(-1),
swap_callback_(PP_BlockUntilComplete()) {
}
Graphics3DImpl::~Graphics3DImpl() {
// Make sure that GLES2 implementation has already been destroyed.
DCHECK_EQ(transfer_buffer_id_, -1);
DCHECK(!gles2_helper_.get());
DCHECK(!gles2_impl_.get());
}
int32_t Graphics3DImpl::GetAttribs(int32_t* attrib_list) {
// TODO(alokp): Implement me.
return PP_ERROR_FAILED;
}
int32_t Graphics3DImpl::SetAttribs(int32_t* attrib_list) {
// TODO(alokp): Implement me.
return PP_ERROR_FAILED;
}
int32_t Graphics3DImpl::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_ = callback;
return DoSwapBuffers();
}
void Graphics3DImpl::SwapBuffersACK(int32_t pp_error) {
DCHECK(HasPendingSwap());
PP_RunAndClearCompletionCallback(&swap_callback_, pp_error);
}
bool Graphics3DImpl::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.
transfer_buffer_id_ =
command_buffer->CreateTransferBuffer(transfer_buffer_size, -1);
if (transfer_buffer_id_ < 0)
return false;
// Map the buffer into the renderer process's address space.
gpu::Buffer transfer_buffer =
command_buffer->GetTransferBuffer(transfer_buffer_id_);
if (!transfer_buffer.ptr)
return false;
// Create the object exposing the OpenGL API.
gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
gles2_helper_.get(),
transfer_buffer.size,
transfer_buffer.ptr,
transfer_buffer_id_,
false));
return true;
}
void Graphics3DImpl::DestroyGLES2Impl() {
gles2_impl_.reset();
if (transfer_buffer_id_ != -1) {
gpu::CommandBuffer* command_buffer = GetCommandBuffer();
DCHECK(command_buffer);
command_buffer->DestroyTransferBuffer(transfer_buffer_id_);
transfer_buffer_id_ = -1;
}
gles2_helper_.reset();
}
} // namespace ppapi
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