Add support for compressed GPU memory buffers.

content/common/gpu/gpu_command_buffer_stub.cc

 // 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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/hash.h"
 #include "base/json/json_writer.h"
 #include "base/memory/shared_memory.h"
@@ skipping 122 matching lines @@
   scoped_ptr<base::DictionaryValue> res(new base::DictionaryValue);
   res->SetInteger("renderer_pid", channel->renderer_pid());
   res->SetDouble("used_bytes", channel->GetMemoryUsage());
   res->SetDouble("limit_bytes",
                  channel->gpu_channel_manager()
                      ->gpu_memory_manager()
                      ->GetMaximumClientAllocation());
   return new DevToolsChannelData(res.release());
 }
 
+bool IsSupportedImageFormat(const gpu::Capabilities& capabilities,
+                            gfx::GpuMemoryBuffer::Format format) {
+  switch (format) {
+    case gfx::GpuMemoryBuffer::ATC:
+    case gfx::GpuMemoryBuffer::ATCIA:
+      return capabilities.texture_format_atc;
+    case gfx::GpuMemoryBuffer::BGRA_8888:
+      return capabilities.texture_format_bgra8888;
+    case gfx::GpuMemoryBuffer::DXT1:
+      return capabilities.texture_format_dxt1;
+    case gfx::GpuMemoryBuffer::DXT5:
+      return capabilities.texture_format_dxt5;
+    case gfx::GpuMemoryBuffer::ETC1:
+      return capabilities.texture_format_etc1;
+    case gfx::GpuMemoryBuffer::RGBA_8888:
+    case gfx::GpuMemoryBuffer::RGBX_8888:
+      return true;
+  }
+
+  NOTREACHED();
+  return false;
+}
+
 }  // namespace
 
 GpuCommandBufferStub::GpuCommandBufferStub(
     GpuChannel* channel,
     GpuCommandBufferStub* share_group,
     const gfx::GLSurfaceHandle& handle,
     gpu::gles2::MailboxManager* mailbox_manager,
     gpu::gles2::SubscriptionRefSet* subscription_ref_set,
     gpu::ValueStateMap* pending_valuebuffer_state,
     const gfx::Size& size,
@@ skipping 796 matching lines @@
   if (!decoder_)
     return;
 
   gpu::gles2::ImageManager* image_manager = decoder_->GetImageManager();
   DCHECK(image_manager);
   if (image_manager->LookupImage(id)) {
     LOG(ERROR) << "Image already exists with same ID.";
     return;
   }
 
+  if (!IsSupportedImageFormat(decoder_->GetCapabilities(), format)) {
+    LOG(ERROR) << "Image format is not supported.";
+    return;
+  }
+
   scoped_refptr<gfx::GLImage> image = channel()->CreateImageForGpuMemoryBuffer(
       handle, size, format, internalformat);
   if (!image.get())
     return;
 
   image_manager->AddImage(image.get(), id);
 }
 
 void GpuCommandBufferStub::OnDestroyImage(int32 id) {
   TRACE_EVENT0("gpu", "GpuCommandBufferStub::OnDestroyImage");
@@ skipping 108 matching lines @@
 uint64 GpuCommandBufferStub::GetMemoryUsage() const {
   return GetMemoryManager()->GetClientMemoryUsage(this);
 }
 
 void GpuCommandBufferStub::SwapBuffersCompleted(
     const std::vector<ui::LatencyInfo>& latency_info) {
   Send(new GpuCommandBufferMsg_SwapBuffersCompleted(route_id_, latency_info));
 }
 
 }  // namespace content