Reland [Command buffer]: Generate INVALID_OPERATION if designated attachments in read fb miss image

gpu/command_buffer/service/gles2_cmd_decoder_unittest_framebuffers.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 3943 matching lines @@
     EXPECT_CALL(*gl_, CheckFramebufferStatusEXT(GL_READ_FRAMEBUFFER))
         .WillOnce(Return(GL_FRAMEBUFFER_COMPLETE))
         .RetiresOnSaturation();
     SetupExpectationsForFramebufferClearing(GL_DRAW_FRAMEBUFFER,  // target
                                             GL_COLOR_BUFFER_BIT,  // clear bits
                                             0, 0, 0, 0,           // color
                                             0,                    // stencil
                                             1.0f,                 // depth
                                             false,  // scissor test
                                             0, 0, 128, 64);
-    EXPECT_CALL(*gl_, BlitFramebufferEXT(0, 0, _, _, 0, 0, _, _,
-                                      GL_COLOR_BUFFER_BIT, GL_LINEAR))
-        .Times(1)
-        .RetiresOnSaturation();
     BlitFramebufferCHROMIUM cmd;
     cmd.Init(0, 0, 1, 1, 0, 0, 1, 1, GL_COLOR_BUFFER_BIT, GL_LINEAR);
     EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
-    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+    // Generate INVALID_OPERATION because of missing read buffer image.
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
   }
 }
 
 TEST_P(GLES3DecoderTest, BlitFramebufferMissingDepthOrStencil) {
   // Run BlitFramebufferCHROMIUM with depth or stencil bits, from/to a read/draw
-  // framebuffer that doesn't have depth/stencil. The bits should be silently
-  // ignored.
+  // framebuffer that doesn't have depth/stencil. It should generate
+  // INVALID_OPERATION.
   DoBindRenderbuffer(GL_RENDERBUFFER, client_renderbuffer_id_,
                      kServiceRenderbufferId);
   DoRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8,
                         GL_DEPTH24_STENCIL8, 1, 1, GL_NO_ERROR);
   GLuint color_renderbuffer = client_renderbuffer_id_ + 1;
   GLuint color_renderbuffer_service = kServiceRenderbufferId + 1;
   EXPECT_CALL(*gl_, GenRenderbuffersEXT(1, _))
       .WillOnce(SetArgPointee<1>(color_renderbuffer_service))
       .RetiresOnSaturation();
   DoBindRenderbuffer(GL_RENDERBUFFER, color_renderbuffer,
@@ skipping 27 matching lines @@
             GL_STENCIL_BUFFER_BIT,  // clear bits
         0,
         0, 0, 0,  // color
         0,        // stencil
         1.0f,     // depth
         false,    // scissor test
         0, 0, 128, 64);
     EXPECT_CALL(*gl_, CheckFramebufferStatusEXT(GL_READ_FRAMEBUFFER))
         .WillOnce(Return(GL_FRAMEBUFFER_COMPLETE))
         .RetiresOnSaturation();
-    EXPECT_CALL(*gl_, BlitFramebufferEXT(0, 0, 1, 1, 0, 0, 1, 1,
-                                         _, _))
-        .Times(0);
     BlitFramebufferCHROMIUM cmd;
     cmd.Init(0, 0, 1, 1, 0, 0, 1, 1, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
     EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
-    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
     cmd.Init(0, 0, 1, 1, 0, 0, 1, 1, GL_STENCIL_BUFFER_BIT, GL_NEAREST);
     EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
-    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+    EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
   }
 
   // Switch FBOs and try the same.
   DoBindFramebuffer(GL_READ_FRAMEBUFFER, client_framebuffer_id_,
                     kServiceFramebufferId);
   DoBindFramebuffer(GL_DRAW_FRAMEBUFFER, color_fbo, kNewServiceId);
   {
     EXPECT_CALL(*gl_, BlitFramebufferEXT(0, 0, 1, 1, 0, 0, 1, 1,
                                          _, _))
         .Times(0);
     BlitFramebufferCHROMIUM cmd;
     cmd.Init(0, 0, 1, 1, 0, 0, 1, 1, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
     EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
     EXPECT_EQ(GL_NO_ERROR, GetGLError());
     cmd.Init(0, 0, 1, 1, 0, 0, 1, 1, GL_STENCIL_BUFFER_BIT, GL_NEAREST);
     EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
     EXPECT_EQ(GL_NO_ERROR, GetGLError());
   }
 }
 
 // TODO(gman): PixelStorei
 
 // TODO(gman): SwapBuffers
 
 }  // namespace gles2
 }  // namespace gpu