Tile Compression

gpu/command_buffer/service/async_pixel_transfer_manager_android.cc

 // 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 "gpu/command_buffer/service/async_pixel_transfer_manager.h"
 
+#include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/sys_info.h"
+#include "gpu/command_buffer/service/async_pixel_transfer_manager_compressed.h"
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_egl.h"
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_idle.h"
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_stub.h"
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_sync.h"
+#include "gpu/command_buffer/service/gpu_switches.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_implementation.h"
 
 namespace gpu {
 namespace {
 
 enum GpuType {
   GPU_BROADCOM,
   GPU_IMAGINATION,
   GPU_NVIDIA_ES31,
@@ skipping 31 matching lines @@
 
   return GPU_OTHER;
 }
 
 bool AllowTransferThreadForGpu() {
   GpuType gpu = GetGpuType();
   return gpu != GPU_BROADCOM && gpu != GPU_IMAGINATION &&
          gpu != GPU_NVIDIA_ES31 && gpu != GPU_ADRENO_420;
 }
 
+bool IsAsyncEGLUploadsDisabled(gfx::GLContext* context) {
+  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  if (!command_line.HasSwitch(switches::kDisableAsyncEGLUploadsIfCompressed))
+    return false;
+
+  if (context->HasExtension("GL_EXT_texture_compression_s3tc") ||
+      (context->HasExtension("GL_ANGLE_texture_compression_dxt1") &&
+       context->HasExtension("GL_ANGLE_texture_compression_dxt5")) ||
+      context->HasExtension("GL_OES_compressed_ETC1_RGB8_texture") ||
+      context->HasExtension("GL_AMD_compressed_ATC_texture") ||
+      context->HasExtension("GL_ATI_texture_compression_atitc")) {
+    if (!command_line.HasSwitch(
+            switches::kEnableAsyncPixelTransferManagerCompressed)) {
+      return true;
+    }
+  }
+
+  return false;
+}
 }
 
 // We only used threaded uploads when we can:
 // - Create EGLImages out of OpenGL textures (EGL_KHR_gl_texture_2D_image)
 // - Bind EGLImages to OpenGL textures (GL_OES_EGL_image)
 // - Use fences (to test for upload completion).
 // - The heap size is large enough.
+// - No compressed formats are used.
 // TODO(kaanb|epenner): Remove the IsImagination() check pending the
 // resolution of crbug.com/249147
 // TODO(kaanb|epenner): Remove the IsLowEndDevice() check pending the
 // resolution of crbug.com/271929
 AsyncPixelTransferManager* AsyncPixelTransferManager::Create(
     gfx::GLContext* context) {
   DCHECK(context->IsCurrent(NULL));
   switch (gfx::GetGLImplementation()) {
     case gfx::kGLImplementationEGLGLES2:
       DCHECK(context);
       if (!base::SysInfo::IsLowEndDevice() &&
           context->HasExtension("EGL_KHR_fence_sync") &&
           context->HasExtension("EGL_KHR_image") &&
           context->HasExtension("EGL_KHR_image_base") &&
           context->HasExtension("EGL_KHR_gl_texture_2D_image") &&
           context->HasExtension("GL_OES_EGL_image") &&
-          AllowTransferThreadForGpu()) {
+          AllowTransferThreadForGpu() && !IsAsyncEGLUploadsDisabled(context)) {
         TRACE_EVENT0("gpu", "AsyncPixelTransferManager_CreateWithThread");
-        return new AsyncPixelTransferManagerEGL;
+        const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+        if (command_line.HasSwitch(
+                switches::kEnableAsyncPixelTransferManagerCompressed))
+          return new AsyncPixelTransferManagerCompressed;
+        else
+          return new AsyncPixelTransferManagerEGL;
       }
       return new AsyncPixelTransferManagerIdle;
     case gfx::kGLImplementationOSMesaGL: {
       TRACE_EVENT0("gpu", "AsyncPixelTransferManager_CreateIdle");
       return new AsyncPixelTransferManagerIdle;
     }
     case gfx::kGLImplementationMockGL:
       return new AsyncPixelTransferManagerStub;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace gpu