Float formats are allowed for CopyTexImage with EXT_color_buffer_float

gpu/command_buffer/service/gles2_cmd_decoder.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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ skipping 13698 matching lines @@
   uint32_t channels_exist = GLES2Util::GetChannelsForFormat(read_format);
   uint32_t channels_needed = GLES2Util::GetChannelsForFormat(internal_format);
   if (!channels_needed ||
       (channels_needed & channels_exist) != channels_needed) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION, func_name, "incompatible format");
     return false;
   }
   if (feature_info_->IsWebGL2OrES3Context()) {
     GLint color_encoding = GetColorEncodingFromInternalFormat(read_format);
+    bool float_mismatch= feature_info_->ext_color_buffer_float_available() ?
+        (GLES2Util::IsIntegerFormat(internal_format) !=
+         GLES2Util::IsIntegerFormat(read_format)) :
+        GLES2Util::IsFloatFormat(internal_format);
     if (color_encoding != GetColorEncodingFromInternalFormat(internal_format) ||
-        GLES2Util::IsFloatFormat(internal_format) ||
+        float_mismatch ||
         (GLES2Util::IsSignedIntegerFormat(internal_format) !=
          GLES2Util::IsSignedIntegerFormat(read_format)) ||
         (GLES2Util::IsUnsignedIntegerFormat(internal_format) !=
          GLES2Util::IsUnsignedIntegerFormat(read_format))) {
       LOCAL_SET_GL_ERROR(
           GL_INVALID_OPERATION, func_name, "incompatible format");
       return false;
     }
   }
   if ((channels_needed & (GLES2Util::kDepth | GLES2Util::kStencil)) != 0) {
@@ skipping 5055 matching lines @@
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "base/macros.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu