command_buffer: Implement CHROMIUM_framebuffer_mixed_samples extension

gpu/command_buffer/service/context_state_impl_autogen.h

 // 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 47 matching lines @@
   depth_clear = 1.0f;
   stencil_clear = 0;
   color_mask_red = true;
   cached_color_mask_red = true;
   color_mask_green = true;
   cached_color_mask_green = true;
   color_mask_blue = true;
   cached_color_mask_blue = true;
   color_mask_alpha = true;
   cached_color_mask_alpha = true;
+  coverage_modulation = GL_NONE;
   cull_mode = GL_BACK;
   depth_func = GL_LESS;
   depth_mask = true;
   cached_depth_mask = true;
   z_near = 0.0f;
   z_far = 1.0f;
   front_face = GL_CCW;
   hint_generate_mipmap = GL_DONT_CARE;
   hint_fragment_shader_derivative = GL_DONT_CARE;
   line_width = 1.0f;
@@ skipping 189 matching lines @@
     if ((depth_clear != prev_state->depth_clear))
       glClearDepth(depth_clear);
     if ((stencil_clear != prev_state->stencil_clear))
       glClearStencil(stencil_clear);
     if ((cached_color_mask_red != prev_state->cached_color_mask_red) ||
         (cached_color_mask_green != prev_state->cached_color_mask_green) ||
         (cached_color_mask_blue != prev_state->cached_color_mask_blue) ||
         (cached_color_mask_alpha != prev_state->cached_color_mask_alpha))
       glColorMask(cached_color_mask_red, cached_color_mask_green,
                   cached_color_mask_blue, cached_color_mask_alpha);
+    if (feature_info_->feature_flags().chromium_framebuffer_mixed_samples)
+      if ((coverage_modulation != prev_state->coverage_modulation))
+        glCoverageModulationNV(coverage_modulation);
     if ((cull_mode != prev_state->cull_mode))
       glCullFace(cull_mode);
     if ((depth_func != prev_state->depth_func))
       glDepthFunc(depth_func);
     if ((cached_depth_mask != prev_state->cached_depth_mask))
       glDepthMask(cached_depth_mask);
     if ((z_near != prev_state->z_near) || (z_far != prev_state->z_far))
       glDepthRange(z_near, z_far);
     if ((front_face != prev_state->front_face))
       glFrontFace(front_face);
@@ skipping 122 matching lines @@
                  blend_color_alpha);
     glBlendEquationSeparate(blend_equation_rgb, blend_equation_alpha);
     glBlendFuncSeparate(blend_source_rgb, blend_dest_rgb, blend_source_alpha,
                         blend_dest_alpha);
     glClearColor(color_clear_red, color_clear_green, color_clear_blue,
                  color_clear_alpha);
     glClearDepth(depth_clear);
     glClearStencil(stencil_clear);
     glColorMask(cached_color_mask_red, cached_color_mask_green,
                 cached_color_mask_blue, cached_color_mask_alpha);
+    if (feature_info_->feature_flags().chromium_framebuffer_mixed_samples)
+      glCoverageModulationNV(coverage_modulation);
     glCullFace(cull_mode);
     glDepthFunc(depth_func);
     glDepthMask(cached_depth_mask);
     glDepthRange(z_near, z_far);
     glFrontFace(front_face);
     if (!feature_info_->gl_version_info().is_desktop_core_profile) {
       glHint(GL_GENERATE_MIPMAP_HINT, hint_generate_mipmap);
     }
     if (feature_info_->feature_flags().oes_standard_derivatives) {
       glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES,
@@ skipping 157 matching lines @@
       return true;
     case GL_COLOR_WRITEMASK:
       *num_written = 4;
       if (params) {
         params[0] = static_cast<GLint>(color_mask_red);
         params[1] = static_cast<GLint>(color_mask_green);
         params[2] = static_cast<GLint>(color_mask_blue);
         params[3] = static_cast<GLint>(color_mask_alpha);
       }
       return true;
+    case GL_COVERAGE_MODULATION_CHROMIUM:
+      *num_written = 1;
+      if (params) {
+        params[0] = static_cast<GLint>(coverage_modulation);
+      }
+      return true;
     case GL_CULL_FACE_MODE:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLint>(cull_mode);
       }
       return true;
     case GL_DEPTH_FUNC:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLint>(depth_func);
@@ skipping 412 matching lines @@
       return true;
     case GL_COLOR_WRITEMASK:
       *num_written = 4;
       if (params) {
         params[0] = static_cast<GLfloat>(color_mask_red);
         params[1] = static_cast<GLfloat>(color_mask_green);
         params[2] = static_cast<GLfloat>(color_mask_blue);
         params[3] = static_cast<GLfloat>(color_mask_alpha);
       }
       return true;
+    case GL_COVERAGE_MODULATION_CHROMIUM:
+      *num_written = 1;
+      if (params) {
+        params[0] = static_cast<GLfloat>(coverage_modulation);
+      }
+      return true;
     case GL_CULL_FACE_MODE:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(cull_mode);
       }
       return true;
     case GL_DEPTH_FUNC:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(depth_func);
@@ skipping 329 matching lines @@
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(enable_flags.sample_alpha_to_one_ext);
       }
       return true;
     default:
       return false;
   }
 }
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_IMPL_AUTOGEN_H_