Disable scissor test during texture copies

cc/texture_copier_unittest.cc

 // Copyright 2011 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 "config.h"
 
 #include "cc/texture_copier.h"
 
 #include "cc/test/fake_web_graphics_context_3d.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/khronos/GLES2/gl2.h"
 
 using namespace cc;
 using namespace WebKit;
 using testing::InSequence;
 using testing::Test;
 using testing::_;
 
 namespace {
 
 class MockContext : public FakeWebGraphicsContext3D {
 public:
     MOCK_METHOD2(bindFramebuffer, void(WGC3Denum, WebGLId));
     MOCK_METHOD3(texParameteri, void(WGC3Denum target, WGC3Denum pname, WGC3Dint param));
+    MOCK_METHOD1(disable, void(WGC3Denum cap));
+    MOCK_METHOD1(enable, void(WGC3Denum cap));
 
     MOCK_METHOD3(drawArrays, void(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count));
 };
 
 TEST(TextureCopierTest, testDrawArraysCopy)
 {
     scoped_ptr<MockContext> mockContext(new MockContext);
 
     {
         InSequence sequence;
 
+        EXPECT_CALL(*mockContext, disable(GL_SCISSOR_TEST));
+
         // Here we check just some essential properties of copyTexture() to avoid mirroring the full implementation.
         EXPECT_CALL(*mockContext, bindFramebuffer(GL_FRAMEBUFFER, _));
 
         // Make sure linear filtering is disabled during the copy.
         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
 
+        EXPECT_CALL(*mockContext, disable(GL_BLEND));
+
         EXPECT_CALL(*mockContext, drawArrays(_, _, _));
 
-        // Linear filtering should be restored.
+        // Linear filtering, default framebuffer and scissor test should be restored.
         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
-
-        // Default framebuffer should be restored
         EXPECT_CALL(*mockContext, bindFramebuffer(GL_FRAMEBUFFER, 0));
+        EXPECT_CALL(*mockContext, enable(GL_SCISSOR_TEST));
     }
 
     int sourceTextureId = 1;
     int destTextureId = 2;
     gfx::Size size(256, 128);
     scoped_ptr<AcceleratedTextureCopier> copier(AcceleratedTextureCopier::create(mockContext.get(), false));
     TextureCopier::Parameters copy = { sourceTextureId, destTextureId, size };
     copier->copyTexture(copy);
 }
 
 }  // anonymous namespace