Restore gl scissor state when switching FBO targets on Qualcomm

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 <set>
 
 #include "base/command_line.h"
 #include "base/string_number_conversions.h"
@@ skipping 74 matching lines @@
       enable_shader_name_hashing(false) {
 }
 
 FeatureInfo::Workarounds::Workarounds()
     : clear_alpha_in_readpixels(false),
       needs_glsl_built_in_function_emulation(false),
       needs_offscreen_buffer_workaround(false),
       reverse_point_sprite_coord_origin(false),
       set_texture_filter_before_generating_mipmap(false),
       use_current_program_after_successful_link(false),
+      restore_scissor_on_fbo_change(false),
       max_texture_size(0),
       max_cube_map_texture_size(0) {
 }
 
 FeatureInfo::FeatureInfo() {
   static const GLenum kAlphaTypes[] = {
       GL_UNSIGNED_BYTE,
   };
   static const GLenum kRGBTypes[] = {
       GL_UNSIGNED_BYTE,
@@ skipping 559 matching lines @@
     AddExtensionString("GL_CHROMIUM_swapbuffers_complete_callback");
 
   if (!feature_flags_.disable_workarounds) {
     workarounds_.set_texture_filter_before_generating_mipmap = true;
     workarounds_.clear_alpha_in_readpixels = true;
 
     if (is_nvidia) {
       workarounds_.use_current_program_after_successful_link = true;
     }
 
+    if (is_qualcomm) {
+      workarounds_.restore_scissor_on_fbo_change = true;
+    }
+
 #if defined(OS_MACOSX)
     workarounds_.needs_offscreen_buffer_workaround = is_nvidia;
     workarounds_.needs_glsl_built_in_function_emulation = is_amd;
 
     if ((is_amd || is_intel) &&
         gfx::GetGLImplementation() == gfx::kGLImplementationDesktopGL) {
       workarounds_.reverse_point_sprite_coord_origin = true;
     }
 
     // Limit Intel on Mac to 4096 max tex size and 1024 max cube map tex size.
@@ skipping 25 matching lines @@
   if (extensions_.find(str) == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu