Index: gpu/command_buffer/tests/gl_clear_framebuffer_unittest.cc |
diff --git a/gpu/command_buffer/tests/gl_clear_framebuffer_unittest.cc b/gpu/command_buffer/tests/gl_clear_framebuffer_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..8a925c8548f207cbe8d117278fa48a7e43a4e88e |
--- /dev/null |
+++ b/gpu/command_buffer/tests/gl_clear_framebuffer_unittest.cc |
@@ -0,0 +1,200 @@ |
+// 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. |
+ |
+#ifndef GL_GLEXT_PROTOTYPES |
+#define GL_GLEXT_PROTOTYPES |
+#endif |
+ |
+#include <GLES2/gl2.h> |
+#include <GLES2/gl2ext.h> |
+#include <GLES2/gl2extchromium.h> |
+ |
+#include <vector> |
+ |
+#include "base/command_line.h" |
+#include "base/strings/string_number_conversions.h" |
+#include "gpu/command_buffer/service/gpu_switches.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 { |
+ |
+// A collection of tests that exercise the glClear workaround. |
+class GLClearFramebufferTest : public testing::TestWithParam<bool> { |
+ public: |
+ GLClearFramebufferTest() : color_handle_(0u), depth_handle_(0u) {} |
+ |
+ protected: |
+ void SetUp() override { |
+ if (GetParam()) { |
+ // Force the glClear() workaround so we can test it here. |
+ CommandLine command_line(base::CommandLine::NO_PROGRAM); |
+ command_line.AppendSwitchASCII(switches::kGpuDriverBugWorkarounds, |
+ base::IntToString(gpu::GL_CLEAR_BROKEN)); |
+ gl_.InitializeWithCommandLine(GLManager::Options(), &command_line); |
+ DCHECK(gl_.workarounds().gl_clear_broken); |
+ } else { |
+ gl_.Initialize(GLManager::Options()); |
+ DCHECK(!gl_.workarounds().gl_clear_broken); |
+ } |
+ } |
+ |
+ void InitDraw(); |
+ void SetDrawColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a); |
+ void SetDrawDepth(GLfloat depth); |
+ void DrawQuad(); |
+ |
+ void TearDown() override { |
+ GLTestHelper::CheckGLError("no errors", __LINE__); |
+ gl_.Destroy(); |
+ } |
+ |
+ private: |
+ GLManager gl_; |
+ GLuint color_handle_; |
+ GLuint depth_handle_; |
+}; |
+ |
+void GLClearFramebufferTest::InitDraw() { |
+ static const char* v_shader_str = |
+ "attribute vec4 a_Position;\n" |
+ "uniform float u_depth;\n" |
+ "void main()\n" |
+ "{\n" |
+ " gl_Position = a_Position;\n" |
+ " gl_Position.z = u_depth;\n" |
+ "}\n"; |
+ static const char* f_shader_str = |
+ "precision mediump float;\n" |
+ "uniform vec4 u_draw_color;\n" |
+ "void main()\n" |
+ "{\n" |
+ " gl_FragColor = u_draw_color;\n" |
+ "}\n"; |
+ |
+ GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str); |
+ DCHECK(program); |
+ glUseProgram(program); |
+ GLuint position_loc = glGetAttribLocation(program, "a_Position"); |
+ |
+ GLTestHelper::SetupUnitQuad(position_loc); |
+ color_handle_ = glGetUniformLocation(program, "u_draw_color"); |
+ DCHECK(color_handle_ != static_cast<GLuint>(-1)); |
+ depth_handle_ = glGetUniformLocation(program, "u_depth"); |
+ DCHECK(depth_handle_ != static_cast<GLuint>(-1)); |
+} |
+ |
+void GLClearFramebufferTest::SetDrawColor(GLfloat r, |
+ GLfloat g, |
+ GLfloat b, |
+ GLfloat a) { |
+ glUniform4f(color_handle_, r, g, b, a); |
+} |
+ |
+void GLClearFramebufferTest::SetDrawDepth(GLfloat depth) { |
+ glUniform1f(depth_handle_, depth); |
+} |
+ |
+void GLClearFramebufferTest::DrawQuad() { |
+ glDrawArrays(GL_TRIANGLES, 0, 6); |
+} |
+ |
+INSTANTIATE_TEST_CASE_P(GLClearFramebufferTestWithParam, |
+ GLClearFramebufferTest, |
+ ::testing::Values(true, false)); |
+ |
+TEST_P(GLClearFramebufferTest, ClearColor) { |
+ glClearColor(1.0f, 0.5f, 0.25f, 0.5f); |
+ glClear(GL_COLOR_BUFFER_BIT); |
+ |
+ // Verify. |
+ const uint8 expected[] = {255, 128, 64, 128}; |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 1 /* tolerance */, expected)); |
+} |
+ |
+TEST_P(GLClearFramebufferTest, ClearColorWithMask) { |
+ glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE); |
+ glClearColor(1.0f, 1.0f, 1.0f, 1.0f); |
+ glClear(GL_COLOR_BUFFER_BIT); |
+ |
+ // Verify. |
+ const uint8 expected[] = {255, 0, 0, 0}; |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, expected)); |
+} |
+ |
+// crbug.com/434094 |
+#if !defined(OS_MACOSX) |
+TEST_P(GLClearFramebufferTest, ClearColorWithScissor) { |
+ glClearColor(1.0f, 1.0f, 1.0f, 1.0f); |
+ glClear(GL_COLOR_BUFFER_BIT); |
+ |
+ // Verify. |
+ const uint8 expected[] = {255, 255, 255, 255}; |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, expected)); |
+ |
+ glScissor(0, 0, 0, 0); |
+ glEnable(GL_SCISSOR_TEST); |
+ glClearColor(0, 0, 0, 0); |
+ glClear(GL_COLOR_BUFFER_BIT); |
+ |
+ // Verify - no changes. |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, expected)); |
+} |
+#endif |
+ |
+TEST_P(GLClearFramebufferTest, ClearDepthStencil) { |
+ const GLuint kStencilRef = 1 << 2; |
+ InitDraw(); |
+ SetDrawColor(1.0f, 0.0f, 0.0f, 1.0f); |
+ DrawQuad(); |
+ // Verify. |
+ const uint8 kRed[] = {255, 0, 0, 255}; |
+ const uint8 kGreen[] = {0, 255, 0, 255}; |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kRed)); |
+ |
+ glClearStencil(kStencilRef); |
+ glClear(GL_STENCIL_BUFFER_BIT); |
+ glEnable(GL_STENCIL_TEST); |
+ glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); |
+ glStencilFunc(GL_NOTEQUAL, kStencilRef, 0xFFFFFFFF); |
+ |
+ SetDrawColor(0.0f, 1.0f, 0.0f, 1.0f); |
+ DrawQuad(); |
+ // Verify - stencil should have failed, so still red. |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kRed)); |
+ |
+ glStencilFunc(GL_EQUAL, kStencilRef, 0xFFFFFFFF); |
+ DrawQuad(); |
+ // Verify - stencil should have passed, so green. |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kGreen)); |
+ |
+ glEnable(GL_DEPTH_TEST); |
+ glClearDepthf(0.0f); |
+ glClear(GL_DEPTH_BUFFER_BIT); |
+ |
+ SetDrawDepth(0.5f); |
+ SetDrawColor(1.0f, 0.0f, 0.0f, 1.0f); |
+ DrawQuad(); |
+ // Verify - depth test should have failed, so still green. |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kGreen)); |
+ |
+ glClearDepthf(0.9f); |
+ glClear(GL_DEPTH_BUFFER_BIT); |
+ DrawQuad(); |
+ // Verify - depth test should have passed, so red. |
+ EXPECT_TRUE( |
+ GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kRed)); |
+} |
+ |
+} // namespace gpu |