Add texture swizzle back to command buffer.

gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.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 <stddef.h>
 #include <stdint.h>
 
 #include "base/command_line.h"
@@ skipping 4702 matching lines @@
   BindTexture cmd;
   cmd.Init(GL_TEXTURE_1D, client_texture_id_);
   EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
   EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
 
   cmd.Init(GL_TEXTURE_3D, client_texture_id_);
   EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
   EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
 }
 
+TEST_P(GLES3DecoderTest, TexSwizzleAllowed) {
+  const GLenum kTarget = GL_TEXTURE_2D;
+  const GLenum kSwizzleParam = GL_TEXTURE_SWIZZLE_R;
+  const GLenum kSwizzleValue = GL_BLUE;
+  const GLenum kInvalidSwizzleValue = GL_RG;
+
+  {
+    EXPECT_CALL(*gl_, TexParameteri(kTarget, kSwizzleParam, kSwizzleValue));
+    TexParameteri cmd;
+    cmd.Init(kTarget, kSwizzleParam, kSwizzleValue);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+  }
+
+  {
+    TexParameteri cmd;
+    cmd.Init(kTarget, kSwizzleParam, kInvalidSwizzleValue);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
+  }
+
+  {
+    EXPECT_CALL(*gl_, GetError())
+        .WillOnce(Return(GL_NO_ERROR))
+        .WillOnce(Return(GL_NO_ERROR))
+        .RetiresOnSaturation();
+    typedef GetTexParameteriv::Result Result;
+    Result* result = static_cast<Result*>(shared_memory_address_);
+    result->size = 0;
+    GetTexParameteriv cmd;
+    cmd.Init(kTarget, kSwizzleParam, shared_memory_id_, shared_memory_offset_);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(decoder_->GetGLES2Util()->GLGetNumValuesReturned(kSwizzleParam),
+              result->GetNumResults());
+    EXPECT_EQ(GL_NO_ERROR, GetGLError());
+    EXPECT_EQ(kSwizzleValue, static_cast<GLenum>(result->GetData()[0]));
+  }
+}
+
+TEST_P(WebGL2DecoderTest, TexSwizzleDisabled) {
+  const GLenum kTarget = GL_TEXTURE_2D;
+  const GLenum kSwizzleParam = GL_TEXTURE_SWIZZLE_R;
+  const GLenum kSwizzleValue = GL_BLUE;
+
+  {
+    TexParameteri cmd;
+    cmd.Init(kTarget, kSwizzleParam, kSwizzleValue);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
+  }
+
+  {
+    typedef GetTexParameteriv::Result Result;
+    Result* result = static_cast<Result*>(shared_memory_address_);
+    result->size = 0;
+    GetTexParameteriv cmd;
+    cmd.Init(kTarget, kSwizzleParam, shared_memory_id_, shared_memory_offset_);
+    EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+    EXPECT_EQ(GL_INVALID_ENUM, GetGLError());
+  }
+}
+
 // TODO(gman): Complete this test.
 // TEST_P(GLES2DecoderTest, CompressedTexImage2DGLError) {
 // }
 
 // TODO(gman): CompressedTexImage2D
 
 // TODO(gman): CompressedTexImage2DImmediate
 
 // TODO(gman): CompressedTexSubImage2DImmediate
 
 // TODO(gman): TexImage2D
 
 // TODO(gman): TexImage2DImmediate
 
 // TODO(gman): TexSubImage2DImmediate
 
 }  // namespace gles2
 }  // namespace gpu