gpu: Move native memory buffer configuration into //gpu

gpu/ipc/host/gpu_memory_buffer_support.cc

Index: gpu/ipc/host/gpu_memory_buffer_support.cc
diff --git a/gpu/ipc/host/gpu_memory_buffer_support.cc b/gpu/ipc/host/gpu_memory_buffer_support.cc
new file mode 100644
index 0000000000000000000000000000000000000000..566a9a3a8522d2d2c605f2d0d700fab5366aaa4c
--- /dev/null
+++ b/gpu/ipc/host/gpu_memory_buffer_support.cc
@@ -0,0 +1,85 @@
+// Copyright 2016 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/ipc/host/gpu_memory_buffer_support.h"
+
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "build/build_config.h"
+#include "gpu/ipc/common/gpu_memory_buffer_support.h"
+#include "gpu/ipc/host/gpu_switches.h"
+#include "ui/gl/gl_switches.h"
+
+namespace gpu {
+
+bool AreNativeGpuMemoryBuffersEnabled() {
+  // Disable native buffers when using Mesa.
+  if (base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kUseGL) == gl::kGLImplementationOSMesaName) {
+    return false;
+  }
+
+#if defined(OS_MACOSX)
+  return !base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kDisableNativeGpuMemoryBuffers);
+#else
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableNativeGpuMemoryBuffers);
+#endif
+}
+
+GpuMemoryBufferConfigurationSet GetNativeGpuMemoryBufferConfigurations() {
+  GpuMemoryBufferConfigurationSet configurations;
+
+  if (AreNativeGpuMemoryBuffersEnabled()) {
+    const gfx::BufferFormat kNativeFormats[] = {
+        gfx::BufferFormat::R_8,
+        gfx::BufferFormat::RG_88,
+        gfx::BufferFormat::BGR_565,
+        gfx::BufferFormat::RGBA_4444,
+        gfx::BufferFormat::RGBA_8888,
+        gfx::BufferFormat::BGRA_8888,
+        gfx::BufferFormat::UYVY_422,
+        gfx::BufferFormat::YVU_420,
+        gfx::BufferFormat::YUV_420_BIPLANAR};
+    const gfx::BufferUsage kNativeUsages[] = {
+        gfx::BufferUsage::GPU_READ, gfx::BufferUsage::SCANOUT,
+        gfx::BufferUsage::GPU_READ_CPU_READ_WRITE,
+        gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT};
+    for (auto& format : kNativeFormats) {
+      for (auto& usage : kNativeUsages) {
+        if (IsNativeGpuMemoryBufferConfigurationSupported(format, usage))
+          configurations.insert(std::make_pair(format, usage));
+      }
+    }
+  }
+
+#if defined(USE_OZONE) || defined(OS_MACOSX)
+  // Disable native buffers only when using Mesa.
+  bool force_native_gpu_read_write_formats =
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kUseGL) != gl::kGLImplementationOSMesaName;
+#else
+  bool force_native_gpu_read_write_formats = false;
+#endif
+  if (force_native_gpu_read_write_formats) {
+    const gfx::BufferFormat kGPUReadWriteFormats[] = {
+        gfx::BufferFormat::BGR_565,   gfx::BufferFormat::RGBA_8888,
+        gfx::BufferFormat::RGBX_8888, gfx::BufferFormat::BGRA_8888,
+        gfx::BufferFormat::BGRX_8888, gfx::BufferFormat::UYVY_422,
+        gfx::BufferFormat::YVU_420,   gfx::BufferFormat::YUV_420_BIPLANAR};
+    const gfx::BufferUsage kGPUReadWriteUsages[] = {gfx::BufferUsage::GPU_READ,
+                                                    gfx::BufferUsage::SCANOUT};
+    for (auto& format : kGPUReadWriteFormats) {
+      for (auto& usage : kGPUReadWriteUsages) {
+        if (IsNativeGpuMemoryBufferConfigurationSupported(format, usage))
+          configurations.insert(std::make_pair(format, usage));
+      }
+    }
+  }
+
+  return configurations;
+}
+
+}  // namespace gpu