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- // 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 <GLES3/gl3.h>
- #include <stdint.h>
- #include <vector>
- #include "build/build_config.h"
- #include "gpu/command_buffer/tests/gl_manager.h"
- #include "gpu/command_buffer/tests/gl_test_utils.h"
- #include "gpu/config/gpu_test_config.h"
- #include "testing/gmock/include/gmock/gmock.h"
- #include "testing/gtest/include/gtest/gtest.h"
- #include "ui/gfx/extension_set.h"
- #include "ui/gl/gl_context.h"
- #include "ui/gl/gl_version_info.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.
- GpuDriverBugWorkarounds workarounds;
- workarounds.gl_clear_broken = true;
- gl_.InitializeWithWorkarounds(GLManager::Options(), workarounds);
- DCHECK(gl_.workarounds().gl_clear_broken);
- } else {
- gl_.Initialize(GLManager::Options());
- DCHECK(!gl_.workarounds().gl_clear_broken);
- }
- }
- bool IsApplicable() {
- // The workaround doesn't use VAOs which would cause a failure on a core
- // context and the hardware for each the workaround is necessary has a buggy
- // VAO implementation. So we skip testing the workaround on core profiles.
- return !GetParam() ||
- !gl_.context()->GetVersionInfo()->is_desktop_core_profile;
- }
- 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_SUITE_P(GLClearFramebufferTestWithParam,
- GLClearFramebufferTest,
- ::testing::Values(true, false));
- TEST_P(GLClearFramebufferTest, ClearColor) {
- if (!IsApplicable()) {
- return;
- }
- glClearColor(1.0f, 0.5f, 0.25f, 0.5f);
- glClear(GL_COLOR_BUFFER_BIT);
- // Verify.
- const uint8_t expected[] = {255, 128, 64, 128};
- EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 1 /* tolerance */, expected,
- nullptr));
- }
- TEST_P(GLClearFramebufferTest, ClearColorWithMask) {
- if (!IsApplicable()) {
- return;
- }
- 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_t expected[] = {255, 0, 0, 0};
- EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, expected,
- nullptr));
- }
- // crbug.com/434094
- #if !BUILDFLAG(IS_MAC)
- TEST_P(GLClearFramebufferTest, ClearColorWithScissor) {
- if (!IsApplicable()) {
- return;
- }
- // TODO(jonahr): Test fails on Linux with ANGLE/passthrough
- // (crbug.com/1099770)
- gpu::GPUTestBotConfig bot_config;
- if (bot_config.LoadCurrentConfig(nullptr) &&
- bot_config.Matches("linux passthrough")) {
- return;
- }
- glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
- glClear(GL_COLOR_BUFFER_BIT);
- // Verify.
- const uint8_t expected[] = {255, 255, 255, 255};
- EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, expected,
- nullptr));
- 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,
- nullptr));
- }
- #endif
- TEST_P(GLClearFramebufferTest, ClearDepthStencil) {
- if (!IsApplicable()) {
- return;
- }
- // TODO(kainino): https://crbug.com/782317
- if (GPUTestBotConfig::CurrentConfigMatches("Intel")) {
- return;
- }
- const GLuint kStencilRef = 1 << 2;
- InitDraw();
- SetDrawColor(1.0f, 0.0f, 0.0f, 1.0f);
- DrawQuad();
- // Verify.
- const uint8_t kRed[] = {255, 0, 0, 255};
- const uint8_t kGreen[] = {0, 255, 0, 255};
- EXPECT_TRUE(
- GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kRed, nullptr));
- 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, nullptr));
- glStencilFunc(GL_EQUAL, kStencilRef, 0xFFFFFFFF);
- DrawQuad();
- // Verify - stencil should have passed, so green.
- EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0 /* tolerance */, kGreen,
- nullptr));
- 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,
- nullptr));
- 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, nullptr));
- }
- TEST_P(GLClearFramebufferTest, SeparateFramebufferClear) {
- const char* extension_string =
- reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
- gfx::ExtensionSet extensions = gfx::MakeExtensionSet(extension_string);
- bool has_separate_framebuffer =
- gfx::HasExtension(extensions, "GL_CHROMIUM_framebuffer_multisample");
- if (!IsApplicable() || !has_separate_framebuffer) {
- return;
- }
- glClearColor(0.f, 0.f, 0.f, 1.f);
- glClear(GL_COLOR_BUFFER_BIT);
- // Bind incomplete read framebuffer, should not affect clear.
- GLuint fbo;
- glGenFramebuffers(1, &fbo);
- glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
- EXPECT_NE(glCheckFramebufferStatus(GL_READ_FRAMEBUFFER),
- static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE));
- glClearColor(1.f, 0.f, 0.f, 1.f);
- glClear(GL_COLOR_BUFFER_BIT);
- glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
- const uint8_t kRed[] = {255, 0, 0, 255};
- EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, kRed, nullptr));
- // Bind complete, but smaller read framebuffer, should not affect clear.
- GLuint texture;
- glGenTextures(1, &texture);
- glBindTexture(GL_TEXTURE_2D, texture);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE,
- nullptr);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
- glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
- GL_TEXTURE_2D, texture, 0);
- EXPECT_EQ(glCheckFramebufferStatus(GL_READ_FRAMEBUFFER),
- static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE));
- glClearColor(0.f, 1.f, 0.f, 1.f);
- glClear(GL_COLOR_BUFFER_BIT);
- glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
- const uint8_t kGreen[] = {0, 255, 0, 255};
- EXPECT_TRUE(GLTestHelper::CheckPixels(3, 3, 1, 1, 0, kGreen, nullptr));
- }
- class ES3ClearBufferTest : public testing::Test {
- protected:
- static const GLsizei kCanvasSize = 4;
- void SetUp() override {
- GLManager::Options options;
- options.size = gfx::Size(kCanvasSize, kCanvasSize);
- options.context_type = CONTEXT_TYPE_OPENGLES3;
- gl_.Initialize(options);
- }
- bool ShouldSkipTest() const {
- // If a driver isn't capable of supporting ES3 context, creating
- // ContextGroup will fail.
- // See crbug.com/654709.
- return (!gl_.decoder() || !gl_.decoder()->GetContextGroup());
- }
- void TearDown() override {
- gl_.Destroy();
- }
- GLManager gl_;
- };
- TEST_F(ES3ClearBufferTest, ClearBuffersuiv) {
- if (ShouldSkipTest())
- return;
- // This is a regression test for https://crbug.com/908749
- GLuint value[1] = {0u};
- glClearBufferuiv(GL_STENCIL, 0, value);
- // The above call should not crash in ASAN build.
- EXPECT_EQ(static_cast<GLenum>(GL_INVALID_ENUM), glGetError());
- GLTestHelper::CheckGLError("no errors", __LINE__);
- }
- } // namespace gpu
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