SRGB_EXT is a valid format of texture in WebGL1.0 and ES2.0 contexts

gpu/command_buffer/service/feature_info.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/feature_info.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
@@ skipping 524 matching lines @@
     AddExtensionString("GL_OES_element_index_uint");
     validators_.index_type.AddValue(GL_UNSIGNED_INT);
   }
 
   // With EXT_sRGB, unsized SRGB_EXT and SRGB_ALPHA_EXT are accepted by the
   // <format> and <internalformat> parameter of TexImage2D. GLES3 adds support
   // for SRGB Textures but the accepted internal formats for TexImage2D are only
   // sized formats GL_SRGB8 and GL_SRGB8_ALPHA8. Also, SRGB_EXT isn't a valid
   // <format> in this case. So, even with GLES3 explicitly check for
   // GL_EXT_sRGB.
-  if (((gl_version_info_->is_es3 || extensions.Contains("GL_OES_rgb8_rgba8")) &&
-       extensions.Contains("GL_EXT_sRGB")) ||
-      gfx::HasDesktopGLFeatures()) {
+  if ((((gl_version_info_->is_es3 ||
+         extensions.Contains("GL_OES_rgb8_rgba8")) &&
+        extensions.Contains("GL_EXT_sRGB")) ||
+       gfx::HasDesktopGLFeatures()) &&
+      (context_type_ == CONTEXT_TYPE_WEBGL1 ||
+       context_type_ == CONTEXT_TYPE_OPENGLES2)) {
     AddExtensionString("GL_EXT_sRGB");
     validators_.texture_internal_format.AddValue(GL_SRGB_EXT);
     validators_.texture_internal_format.AddValue(GL_SRGB_ALPHA_EXT);
     validators_.texture_format.AddValue(GL_SRGB_EXT);
     validators_.texture_format.AddValue(GL_SRGB_ALPHA_EXT);
     validators_.render_buffer_format.AddValue(GL_SRGB8_ALPHA8_EXT);
     validators_.frame_buffer_parameter.AddValue(
         GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT);
+    validators_.texture_unsized_internal_format.AddValue(GL_SRGB_EXT);
     validators_.texture_unsized_internal_format.AddValue(GL_SRGB_ALPHA_EXT);
   }
 
   bool enable_texture_format_bgra8888 = false;
   bool enable_read_format_bgra = false;
   bool enable_render_buffer_bgra = false;
   bool enable_immutable_texture_format_bgra_on_es3 =
       extensions.Contains("GL_APPLE_texture_format_BGRA8888");
 
   // Check if we should allow GL_EXT_texture_format_BGRA8888.
@@ skipping 801 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu