Change CHROMIUM_image declarations to support multi planar input.

gpu/command_buffer/service/image_factory.cc

 // Copyright 2014 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/image_factory.h"
 
 #include "gpu/command_buffer/common/capabilities.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace gpu {
 
 ImageFactory::ImageFactory() {
 }
 
 ImageFactory::~ImageFactory() {
 }
 
 // static
+int ImageFactory::GpuMemoryBufferCountForImageFormat(unsigned internalformat) {
+  switch (internalformat) {
+    case GL_RGB:
+    case GL_RGBA:
+    case GL_ATC_RGB_AMD:
+    case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
+    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+    case GL_ETC1_RGB8_OES:
+      return 1;
+    default:
+      NOTREACHED();
+      return 0;
+  }
+}
+
+// static
 gfx::GpuMemoryBuffer::Format ImageFactory::ImageFormatToGpuMemoryBufferFormat(
-    unsigned internalformat) {
-  switch (internalformat) {
-    case GL_RGB:
-      return gfx::GpuMemoryBuffer::RGBX_8888;
-    case GL_RGBA:
-      return gfx::GpuMemoryBuffer::RGBA_8888;
-    case GL_ATC_RGB_AMD:
-      return gfx::GpuMemoryBuffer::ATC;
-    case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
-      return gfx::GpuMemoryBuffer::ATCIA;
-    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
-      return gfx::GpuMemoryBuffer::DXT1;
-    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
-      return gfx::GpuMemoryBuffer::DXT5;
-    case GL_ETC1_RGB8_OES:
-      return gfx::GpuMemoryBuffer::ETC1;
+    unsigned internalformat,
+    int buffer_index) {
+  switch (buffer_index) {
+    case 0:
+      switch (internalformat) {
+        case GL_RGB:
+        case GL_RGBA:
+          return gfx::GpuMemoryBuffer::RGBA_8888;
+        case GL_ATC_RGB_AMD:
+          return gfx::GpuMemoryBuffer::ATC;
+        case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
+          return gfx::GpuMemoryBuffer::ATCIA;
+        case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+          return gfx::GpuMemoryBuffer::DXT1;
+        case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+          return gfx::GpuMemoryBuffer::DXT5;
+        case GL_ETC1_RGB8_OES:
+          return gfx::GpuMemoryBuffer::ETC1;
+        default:
+          NOTREACHED();
+          return gfx::GpuMemoryBuffer::RGBA_8888;
+      }
     default:
       NOTREACHED();
       return gfx::GpuMemoryBuffer::RGBA_8888;
   }
 }
 
 // static
 gfx::GpuMemoryBuffer::Usage ImageFactory::ImageUsageToGpuMemoryBufferUsage(
     unsigned usage) {
   switch (usage) {
     case GL_MAP_CHROMIUM:
       return gfx::GpuMemoryBuffer::MAP;
     case GL_SCANOUT_CHROMIUM:
       return gfx::GpuMemoryBuffer::SCANOUT;
     default:
       NOTREACHED();
       return gfx::GpuMemoryBuffer::MAP;
   }
 }
 
 // static
 bool ImageFactory::IsImageFormatCompatibleWithGpuMemoryBufferFormat(
     unsigned internalformat,
+    int buffer_index,
     gfx::GpuMemoryBuffer::Format format) {
-  switch (internalformat) {
-    case GL_RGB:
-      switch (format) {
-        case gfx::GpuMemoryBuffer::ATC:
-        case gfx::GpuMemoryBuffer::ATCIA:
-        case gfx::GpuMemoryBuffer::DXT1:
-        case gfx::GpuMemoryBuffer::DXT5:
-        case gfx::GpuMemoryBuffer::ETC1:
-        case gfx::GpuMemoryBuffer::RGBX_8888:
-          return true;
-        case gfx::GpuMemoryBuffer::RGBA_8888:
-        case gfx::GpuMemoryBuffer::BGRA_8888:
+  switch (buffer_index) {
+    case 0:
+      switch (internalformat) {
+        case GL_RGB:
+          switch (format) {
+            case gfx::GpuMemoryBuffer::ATC:
+            case gfx::GpuMemoryBuffer::ATCIA:
+            case gfx::GpuMemoryBuffer::DXT1:
+            case gfx::GpuMemoryBuffer::DXT5:
+            case gfx::GpuMemoryBuffer::ETC1:
+            case gfx::GpuMemoryBuffer::RGBX_8888:
+              return true;
+            case gfx::GpuMemoryBuffer::RGBA_8888:
+            case gfx::GpuMemoryBuffer::BGRA_8888:
+              return false;
+          }
+        case GL_RGBA:
+          switch (format) {
+            case gfx::GpuMemoryBuffer::RGBX_8888:
+              return false;
+            case gfx::GpuMemoryBuffer::ATC:
+            case gfx::GpuMemoryBuffer::ATCIA:
+            case gfx::GpuMemoryBuffer::DXT1:
+            case gfx::GpuMemoryBuffer::DXT5:
+            case gfx::GpuMemoryBuffer::ETC1:
+            case gfx::GpuMemoryBuffer::RGBA_8888:
+            case gfx::GpuMemoryBuffer::BGRA_8888:
+              return true;
+          }
+        default:
+          NOTREACHED();
           return false;
       }
-      NOTREACHED();
-      return false;
-    case GL_RGBA:
-      switch (format) {
-        case gfx::GpuMemoryBuffer::RGBX_8888:
-          return false;
-        case gfx::GpuMemoryBuffer::ATC:
-        case gfx::GpuMemoryBuffer::ATCIA:
-        case gfx::GpuMemoryBuffer::DXT1:
-        case gfx::GpuMemoryBuffer::DXT5:
-        case gfx::GpuMemoryBuffer::ETC1:
-        case gfx::GpuMemoryBuffer::RGBA_8888:
-        case gfx::GpuMemoryBuffer::BGRA_8888:
-          return true;
-      }
-      NOTREACHED();
-      return false;
     default:
       NOTREACHED();
       return false;
   }
 }
 
 // static
 bool ImageFactory::IsGpuMemoryBufferFormatSupported(
     gfx::GpuMemoryBuffer::Format format,
     const gpu::Capabilities& capabilities) {
@@ skipping 35 matching lines @@
     case gfx::GpuMemoryBuffer::BGRA_8888:
     case gfx::GpuMemoryBuffer::RGBX_8888:
       return true;
   }
 
   NOTREACHED();
   return false;
 }
 
 }  // namespace gpu