Reland of Extend CopyTextureCHROMIUM to more ES 3.0 texture formats.

gpu/command_buffer/common/gles2_cmd_utils.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.
 
 // This file is here so other GLES2 related files can have a common set of
 // includes where appropriate.
 
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 
 #include <GLES2/gl2.h>
@@ skipping 465 matching lines @@
       return 1;
 
     // bad enum
     default:
       return 0;
   }
 }
 
 namespace {
 
+// Return the number of bytes per element, based on the element type.
+int BytesPerElement(int type) {
+  switch (type) {
+    case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+      return 8;
+    case GL_FLOAT:
+    case GL_UNSIGNED_INT_24_8_OES:
+    case GL_UNSIGNED_INT:
+    case GL_INT:
+    case GL_UNSIGNED_INT_2_10_10_10_REV:
+    case GL_UNSIGNED_INT_10F_11F_11F_REV:
+    case GL_UNSIGNED_INT_5_9_9_9_REV:
+      return 4;
+    case GL_HALF_FLOAT:
+    case GL_HALF_FLOAT_OES:
+    case GL_UNSIGNED_SHORT:
+    case GL_SHORT:
+    case GL_UNSIGNED_SHORT_5_6_5:
+    case GL_UNSIGNED_SHORT_4_4_4_4:
+    case GL_UNSIGNED_SHORT_5_5_5_1:
+      return 2;
+    case GL_UNSIGNED_BYTE:
+    case GL_BYTE:
+      return 1;
+    default:
+      return 0;
+  }
+}
+
+}  // anonymous namespace
+
 // Return the number of elements per group of a specified format.
-int ElementsPerGroup(int format, int type) {
+int GLES2Util::ElementsPerGroup(int format, int type) {
   switch (type) {
     case GL_UNSIGNED_SHORT_5_6_5:
     case GL_UNSIGNED_SHORT_4_4_4_4:
     case GL_UNSIGNED_SHORT_5_5_5_1:
     case GL_UNSIGNED_INT_24_8_OES:
     case GL_UNSIGNED_INT_2_10_10_10_REV:
     case GL_UNSIGNED_INT_10F_11F_11F_REV:
     case GL_UNSIGNED_INT_5_9_9_9_REV:
     case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
        return 1;
@@ skipping 24 matching lines @@
     case GL_DEPTH24_STENCIL8_OES:
     case GL_DEPTH_STENCIL_OES:
     case GL_RED_EXT:
     case GL_RED_INTEGER:
        return 1;
     default:
        return 0;
   }
 }
 
-// Return the number of bytes per element, based on the element type.
-int BytesPerElement(int type) {
-  switch (type) {
-    case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
-      return 8;
-    case GL_FLOAT:
-    case GL_UNSIGNED_INT_24_8_OES:
-    case GL_UNSIGNED_INT:
-    case GL_INT:
-    case GL_UNSIGNED_INT_2_10_10_10_REV:
-    case GL_UNSIGNED_INT_10F_11F_11F_REV:
-    case GL_UNSIGNED_INT_5_9_9_9_REV:
-      return 4;
-    case GL_HALF_FLOAT:
-    case GL_HALF_FLOAT_OES:
-    case GL_UNSIGNED_SHORT:
-    case GL_SHORT:
-    case GL_UNSIGNED_SHORT_5_6_5:
-    case GL_UNSIGNED_SHORT_4_4_4_4:
-    case GL_UNSIGNED_SHORT_5_5_5_1:
-       return 2;
-    case GL_UNSIGNED_BYTE:
-    case GL_BYTE:
-       return 1;
-    default:
-       return 0;
-  }
-}
-
-}  // anonymous namespace
-
 uint32_t GLES2Util::ComputeImageGroupSize(int format, int type) {
   int bytes_per_element = BytesPerElement(type);
   DCHECK_GE(8, bytes_per_element);
   int elements_per_group = ElementsPerGroup(format, type);
   DCHECK_GE(4, elements_per_group);
   return  bytes_per_element * elements_per_group;
 }
 
 bool GLES2Util::ComputeImageRowSizeHelper(int width,
                                           uint32_t bytes_per_group,
@@ skipping 1379 matching lines @@
     }
   }
 
   return true;
 }
 
 #include "gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu