| // 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 "android_webview/browser/gpu_memory_buffer_impl.h" |
| |
| #include "android_webview/public/browser/draw_gl.h" |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "gpu/command_buffer/client/gl_in_process_context.h" |
| #include "gpu/command_buffer/client/gpu_memory_buffer.h" |
| #include "ui/gfx/size.h" |
| |
| namespace android_webview { |
| |
| // Provides hardware rendering functions from the Android glue layer. |
| AwDrawGLFunctionTable* g_gl_draw_functions = NULL; |
| |
| GpuMemoryBufferImpl::GpuMemoryBufferImpl(gfx::Size size) |
| : buffer_id_(g_gl_draw_functions->create_graphic_buffer( |
| size.width(), size.height())), |
| size_(size), |
| mapped_(false) { |
| } |
| |
| GpuMemoryBufferImpl::~GpuMemoryBufferImpl() { |
| g_gl_draw_functions->release_graphic_buffer(buffer_id_); |
| } |
| |
| void GpuMemoryBufferImpl::Map(gpu::GpuMemoryBuffer::AccessMode mode, |
| void** vaddr) { |
| DCHECK(buffer_id_ != 0); |
| AwMapMode map_mode = MAP_READ_ONLY; |
| switch (mode) { |
| case GpuMemoryBuffer::READ_ONLY: |
| map_mode = MAP_READ_ONLY; |
| break; |
| case GpuMemoryBuffer::WRITE_ONLY: |
| map_mode = MAP_WRITE_ONLY; |
| break; |
| case GpuMemoryBuffer::READ_WRITE: |
| map_mode = MAP_READ_WRITE; |
| break; |
| default: |
| LOG(DFATAL) << "Unknown map mode: " << mode; |
| } |
| int err = g_gl_draw_functions->map(buffer_id_, map_mode, vaddr); |
| DCHECK(err == 0); |
| mapped_ = true; |
| } |
| |
| void GpuMemoryBufferImpl::Unmap() { |
| DCHECK(buffer_id_ != 0); |
| int err = g_gl_draw_functions->unmap(buffer_id_); |
| DCHECK(err == 0); |
| mapped_ = false; |
| } |
| |
| void* GpuMemoryBufferImpl::GetNativeBuffer() { |
| DCHECK(buffer_id_ != 0); |
| return g_gl_draw_functions->get_native_buffer(buffer_id_); |
| } |
| |
| uint32 GpuMemoryBufferImpl::GetStride() { |
| DCHECK(buffer_id_ != 0); |
| return g_gl_draw_functions->get_stride(buffer_id_); |
| } |
| |
| bool GpuMemoryBufferImpl::IsMapped() { |
| return mapped_; |
| } |
| |
| bool GpuMemoryBufferImpl::InitCheck() { |
| return buffer_id_ != 0; |
| } |
| |
| // static |
| scoped_ptr<gpu::GpuMemoryBuffer> GpuMemoryBufferImpl::CreateGpuMemoryBuffer( |
| int width, int height) { |
| DCHECK(width > 0); |
| DCHECK(height > 0); |
| scoped_ptr<GpuMemoryBufferImpl> result(new GpuMemoryBufferImpl( |
| gfx::Size(width, height))); |
| |
| // Check if the buffer allocation succeeded. |
| if (!result->InitCheck()) |
| return scoped_ptr<GpuMemoryBuffer>(); |
| |
| return result.PassAs<gpu::GpuMemoryBuffer>(); |
| } |
| |
| // static |
| void GpuMemoryBufferImpl::SetAwDrawGLFunctionTable( |
| AwDrawGLFunctionTable* table) { |
| g_gl_draw_functions = table; |
| gpu::GLInProcessContext::SetGpuMemoryBufferCreator(&CreateGpuMemoryBuffer); |
| } |
| |
| } // namespace android_webview |