Use IDCompositionSurface to implement DirectCompositionSurfaceWin.

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 1672 matching lines @@
 
   // Wrapper for glLinkProgram
   void DoLinkProgram(GLuint program);
 
   // Wrapper for glOverlayPromotionHintCHROMIUIM
   void DoOverlayPromotionHintCHROMIUM(GLuint client_id,
                                       GLboolean promotion_hint,
                                       GLint display_x,
                                       GLint display_y);
 
+  // Wrapper for glSetDrawRectangleCHROMIUM
+  void DoSetDrawRectangleCHROMIUM(GLint x, GLint y, GLint width, GLint height);
+
   // Wrapper for glReadBuffer
   void DoReadBuffer(GLenum src);
 
   // Wrapper for glRenderbufferStorage.
   void DoRenderbufferStorage(
       GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
 
   // Handler for glRenderbufferStorageMultisampleCHROMIUM.
   void DoRenderbufferStorageMultisampleCHROMIUM(
       GLenum target, GLsizei samples, GLenum internalformat,
@@ skipping 630 matching lines @@
   int commands_to_process_;
 
   bool has_robustness_extension_;
   error::ContextLostReason context_lost_reason_;
   bool context_was_lost_;
   bool reset_by_robustness_extension_;
   bool supports_post_sub_buffer_;
   bool supports_swap_buffers_with_damage_;
   bool supports_commit_overlay_planes_;
   bool supports_async_swap_;
+  bool supports_set_draw_rectangle_ = false;
 
   // These flags are used to override the state of the shared feature_info_
   // member.  Because the same FeatureInfo instance may be shared among many
   // contexts, the assumptions on the availablity of extensions in WebGL
   // contexts may be broken.  These flags override the shared state to preserve
   // WebGL semantics.
   bool derivatives_explicitly_enabled_;
   bool frag_depth_explicitly_enabled_;
   bool draw_buffers_explicitly_enabled_;
   bool shader_texture_lod_explicitly_enabled_;
@@ skipping 1181 matching lines @@
           .disable_post_sub_buffers_for_onscreen_surfaces &&
       !surface->IsOffscreen())
     supports_post_sub_buffer_ = false;
 
   supports_swap_buffers_with_damage_ = surface->SupportsSwapBuffersWithDamage();
 
   supports_commit_overlay_planes_ = surface->SupportsCommitOverlayPlanes();
 
   supports_async_swap_ = surface->SupportsAsyncSwap();
 
+  supports_set_draw_rectangle_ =
+      !offscreen && surface->SupportsSetDrawRectangle();

[sunnyps, 2017/01/28 01:33:58]

nit: Won't surface->SupportsSetDrawRectangle only return true if it's offscreen?

+
   if (workarounds().reverse_point_sprite_coord_origin) {
     glPointParameteri(GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
   }
 
   if (workarounds().unbind_fbo_on_context_switch) {
     context_->SetUnbindFboOnMakeCurrent();
   }
 
   if (workarounds().gl_clear_broken) {
     DCHECK(!clear_framebuffer_blit_.get());
@@ skipping 152 matching lines @@
   caps.iosurface = true;
 #endif
 
   caps.post_sub_buffer = supports_post_sub_buffer_;
   caps.swap_buffers_with_damage = supports_swap_buffers_with_damage_;
   caps.commit_overlay_planes = supports_commit_overlay_planes_;
   caps.surfaceless = surfaceless_;
   bool is_offscreen = !!offscreen_target_frame_buffer_.get();
   caps.flips_vertically = !is_offscreen && surface_->FlipsVertically();
   caps.msaa_is_slow = workarounds().msaa_is_slow;
+  caps.set_draw_rectangle = supports_set_draw_rectangle_;
 
   caps.blend_equation_advanced =
       feature_info_->feature_flags().blend_equation_advanced;
   caps.blend_equation_advanced_coherent =
       feature_info_->feature_flags().blend_equation_advanced_coherent;
   caps.texture_rg = feature_info_->feature_flags().ext_texture_rg;
   caps.texture_half_float_linear =
       feature_info_->feature_flags().enable_texture_half_float_linear;
   caps.image_ycbcr_422 =
       feature_info_->feature_flags().chromium_image_ycbcr_422;
@@ skipping 4909 matching lines @@
           GL_TEXTURE_EXTERNAL_OES, 0);
   if (!image) {
     LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glOverlayPromotionHintCHROMIUM",
                        "texture has no StreamTextureImage");
     return;
   }
 
   image->NotifyPromotionHint(promotion_hint != GL_FALSE, display_x, display_y);
 }
 
+void GLES2DecoderImpl::DoSetDrawRectangleCHROMIUM(GLint x,
+                                                  GLint y,
+                                                  GLint width,
+                                                  GLint height) {
+  Framebuffer* framebuffer = GetFramebufferInfoForTarget(GL_DRAW_FRAMEBUFFER);
+  if (framebuffer) {
+    LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glSetDrawRectangleCHROMIUM",
+                       "framebuffer must not be bound");
+    return;
+  }
+  if (!supports_set_draw_rectangle_) {
+    LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glSetDrawRectangleCHROMIUM",
+                       "surface doesn't support SetDrawRectangle");
+    return;
+  }
+  gfx::Rect rect(x, y, width, height);
+  if (!surface_->SetDrawRectangle(rect)) {
+    LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glSetDrawRectangleCHROMIUM",
+                       "failed on surface");
+  }
+}
+
 void GLES2DecoderImpl::DoReadBuffer(GLenum src) {
   Framebuffer* framebuffer = GetFramebufferInfoForTarget(GL_READ_FRAMEBUFFER);
   if (framebuffer) {
     if (src == GL_BACK) {
       LOCAL_SET_GL_ERROR(
           GL_INVALID_ENUM, "glReadBuffer",
           "invalid src for a named framebuffer");
       return;
     }
     framebuffer->set_read_buffer(src);
@@ skipping 10478 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