Ozone GBM: support R_8 format to GpuMemoryBuffers

ui/gl/gl_image_ozone_native_pixmap.cc

 // Copyright 2015 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 "ui/gl/gl_image_ozone_native_pixmap.h"
 
 #define FOURCC(a, b, c, d)                                        \
   ((static_cast<uint32_t>(a)) | (static_cast<uint32_t>(b) << 8) | \
    (static_cast<uint32_t>(c) << 16) | (static_cast<uint32_t>(d) << 24))
 
+#define DRM_FORMAT_R8 FOURCC('R', '8', ' ', ' ')
 #define DRM_FORMAT_ARGB8888 FOURCC('A', 'R', '2', '4')
 #define DRM_FORMAT_ABGR8888 FOURCC('A', 'B', '2', '4')
 #define DRM_FORMAT_XRGB8888 FOURCC('X', 'R', '2', '4')
 #define DRM_FORMAT_XBGR8888 FOURCC('X', 'B', '2', '4')
 
 namespace gfx {
 namespace {
 
 bool ValidInternalFormat(unsigned internalformat) {
   switch (internalformat) {
     case GL_RGB:
     case GL_RGBA:
     case GL_BGRA_EXT:
+    case GL_RED_EXT:
       return true;
     default:
       return false;
   }
 }
 
 bool ValidFormat(BufferFormat format) {
   switch (format) {
+    case BufferFormat::R_8:
     case BufferFormat::RGBA_8888:
     case BufferFormat::RGBX_8888:
     case BufferFormat::BGRA_8888:
     case BufferFormat::BGRX_8888:
       return true;
     case BufferFormat::ATC:
     case BufferFormat::ATCIA:
     case BufferFormat::DXT1:
     case BufferFormat::DXT5:
     case BufferFormat::ETC1:
-    case BufferFormat::R_8:
     case BufferFormat::RGBA_4444:
     case BufferFormat::YUV_420:
     case BufferFormat::YUV_420_BIPLANAR:
     case BufferFormat::UYVY_422:
       return false;
   }
 
   NOTREACHED();
   return false;
 }
 
 EGLint FourCC(BufferFormat format) {
   switch (format) {
+    case BufferFormat::R_8:
+      return DRM_FORMAT_R8;
     case BufferFormat::RGBA_8888:
       return DRM_FORMAT_ABGR8888;
     case BufferFormat::RGBX_8888:
       return DRM_FORMAT_XBGR8888;
     case BufferFormat::BGRA_8888:
       return DRM_FORMAT_ARGB8888;
     case BufferFormat::BGRX_8888:
       return DRM_FORMAT_XRGB8888;
     case BufferFormat::ATC:
     case BufferFormat::ATCIA:
     case BufferFormat::DXT1:
     case BufferFormat::DXT5:
     case BufferFormat::ETC1:
-    case BufferFormat::R_8:
     case BufferFormat::RGBA_4444:
     case BufferFormat::YUV_420:
     case BufferFormat::YUV_420_BIPLANAR:
     case BufferFormat::UYVY_422:
       NOTREACHED();
       return 0;
   }
 
   NOTREACHED();
   return 0;
@@ skipping 86 matching lines @@
 }
 
 void GLImageOzoneNativePixmap::OnMemoryDump(
     base::trace_event::ProcessMemoryDump* pmd,
     uint64_t process_tracing_id,
     const std::string& dump_name) {
   // TODO(ericrk): Implement GLImage OnMemoryDump. crbug.com/514914
 }
 
 }  // namespace gfx