Add initial support for NV_path_rendering extension to gpu command buffer

gpu/command_buffer/tests/gl_chromium_path_rendering_unittest.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 <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <GLES2/gl2extchromium.h>
+
+#include "gpu/command_buffer/tests/gl_manager.h"
+#include "gpu/command_buffer/tests/gl_test_utils.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace gpu {
+
+class CHROMIUMPathRenderingTest : public testing::Test {
+public:
+  static const GLsizei kResolution = 100;
+
+protected:
+  virtual void SetUp() {
+    GLManager::Options options;
+    options.size = gfx::Size(kResolution, kResolution);
+    gl_.Initialize(options);
+  }
+
+  virtual void TearDown() {
+    gl_.Destroy();
+  }
+
+  template<typename T>
+  void AssertEqualMatrix(const GLfloat* expected, const T* actual) {
+    for (size_t i = 0; i < 16; ++i) {
+      ASSERT_EQ(static_cast<T>(expected[i]), actual[i]);

[vmiura, 2014/04/15 18:02:43]

nit: EXPECT_EQ instead of ASSERT_EQ?

[Kimmo Kinnunen, 2014/04/23 12:26:55]

Done.

+    }
+  }
+  GLManager gl_;
+};
+
+TEST_F(CHROMIUMPathRenderingTest, TestMatrix) {
+  if (!GLTestHelper::HasExtension("GL_CHROMIUM_path_rendering")) {
+    return;
+  }
+  GLfloat identity_matrix[16] = {
+    1.0f, 0.0f, 0.0f, 0.0f,
+    0.0f, 1.0f, 0.0f, 0.0f,
+    0.0f, 0.0f, 1.0f, 0.0f,
+    0.0f, 0.0f, 0.0f, 1.0f
+  };
+  GLfloat seq_matrix[16] = {
+    0.0f, 1.0f, 2.0f, 3.0f,
+    4.0f, 5.0f, 6.0f, 7.0f,
+    8.0f, 9.0f, 10.0f, 11.0f,
+    12.0f, 13.0f, 14.0f, 15.0f
+  };
+  GLenum matrix_modes[] = {
+    GL_MODELVIEW_CHROMIUM, GL_PROJECTION_CHROMIUM
+  };
+  GLenum get_matrix_modes[] = {
+    GL_MODELVIEW_MATRIX_CHROMIUM, GL_PROJECTION_MATRIX_CHROMIUM
+  };
+
+  for (size_t i = 0; i < arraysize(matrix_modes); ++i) {
+    GLfloat mf[16];
+    GLint mi[16];
+    memset(mf, 0, sizeof(mf));
+    memset(mi, 0, sizeof(mi));
+    glGetFloatv(get_matrix_modes[i], mf);
+    glMatrixLoadIdentityCHROMIUM(matrix_modes[i]);
+    glGetFloatv(get_matrix_modes[i], mf);
+    glGetIntegerv(get_matrix_modes[i], mi);
+    AssertEqualMatrix(identity_matrix, mf);
+    AssertEqualMatrix(identity_matrix, mi);
+
+    memset(mf, 0, sizeof(mf));
+    memset(mi, 0, sizeof(mi));
+    glMatrixLoadfCHROMIUM(matrix_modes[i], seq_matrix);
+    glGetFloatv(get_matrix_modes[i], mf);
+    glGetIntegerv(get_matrix_modes[i], mi);
+    AssertEqualMatrix(seq_matrix, mf);
+    AssertEqualMatrix(seq_matrix, mi);
+    EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
+  }
+}
+
+TEST_F(CHROMIUMPathRenderingTest, TestMatrixErrors) {
+  if (!GLTestHelper::HasExtension("GL_CHROMIUM_path_rendering")) {
+    return;
+  }
+  GLfloat mf[16];
+  memset(mf, 0, sizeof(mf));
+
+  // This should fail.
+  glMatrixLoadfCHROMIUM(GL_MODELVIEW_CHROMIUM - 1, mf);
+  EXPECT_EQ(static_cast<GLenum>(GL_INVALID_ENUM), glGetError());
+
+  glMatrixLoadfCHROMIUM(GL_MODELVIEW_CHROMIUM, mf);
+  EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
+
+  // This should fail.
+  glMatrixLoadIdentityCHROMIUM(GL_PROJECTION_CHROMIUM + 1);
+  EXPECT_EQ(static_cast<GLenum>(GL_INVALID_ENUM), glGetError());
+
+  glMatrixLoadIdentityCHROMIUM(GL_PROJECTION_CHROMIUM);
+  EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
+}
+
+}  // namespace gpu