gpu/command_buffer/tests/gl_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <GLES2/gl2.h>
   6 #include <GLES2/gl2ext.h>
   7
   8 #include "gpu/command_buffer/service/feature_info.h"
   9 #include "gpu/command_buffer/tests/gl_manager.h"
  10 #include "gpu/command_buffer/tests/gl_test_utils.h"
  11 #include "testing/gmock/include/gmock/gmock.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13
  14 namespace gpu {
  15
  16 class GLTest : public testing::Test {
  17  protected:
  18   void SetUp() override { gl_.Initialize(GLManager::Options()); }
  19
  20   void TearDown() override { gl_.Destroy(); }
  21
  22   GLManager gl_;
  23 };
  24
  25 // Test that GL is at least minimally working.
  26 TEST_F(GLTest, Basic) {
  27   glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  28   glClear(GL_COLOR_BUFFER_BIT);
  29   uint8 expected[] = { 0, 255, 0, 255, };
  30   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected));
  31   GLTestHelper::CheckGLError("no errors", __LINE__);
  32 }
  33
  34 TEST_F(GLTest, BasicFBO) {
  35   GLuint tex = 0;
  36   glGenTextures(1, &tex);
  37   GLuint fbo = 0;
  38   glGenFramebuffers(1, &fbo);
  39   glBindTexture(GL_TEXTURE_2D, tex);
  40   scoped_ptr<uint8[]> pixels(new uint8 [16*16*4]);
  41   memset(pixels.get(), 0, 16*16*4);
  42   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 16, 0, GL_RGBA, GL_UNSIGNED_BYTE,
  43                pixels.get());
  44   glGenerateMipmap(GL_TEXTURE_2D);
  45   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  46   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  47   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  48   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  49   glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  50   glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
  51                          tex, 0);
  52   EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
  53             glCheckFramebufferStatus(GL_FRAMEBUFFER));
  54   glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  55   glClear(GL_COLOR_BUFFER_BIT);
  56   uint8 expected[] = { 0, 255, 0, 255, };
  57   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 16, 16, 0, expected));
  58   glDeleteFramebuffers(1, &fbo);
  59   glDeleteTextures(1, &tex);
  60   GLTestHelper::CheckGLError("no errors", __LINE__);
  61 }
  62
  63 TEST_F(GLTest, SimpleShader) {
  64   static const char* v_shader_str =
  65       "attribute vec4 a_Position;\n"
  66       "void main()\n"
  67       "{\n"
  68       "   gl_Position = a_Position;\n"
  69       "}\n";
  70   static const char* f_shader_str =
  71       "precision mediump float;\n"
  72       "void main()\n"
  73       "{\n"
  74       "  gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
  75       "}\n";
  76
  77   GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str);
  78   glUseProgram(program);
  79   GLuint position_loc = glGetAttribLocation(program, "a_Position");
  80
  81   GLTestHelper::SetupUnitQuad(position_loc);
  82
  83   uint8 expected_clear[] = { 127, 0, 255, 0, };
  84   glClearColor(0.5f, 0.0f, 1.0f, 0.0f);
  85   glClear(GL_COLOR_BUFFER_BIT);
  86   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 1, expected_clear));
  87   uint8 expected_draw[] = { 0, 255, 0, 255, };
  88   glDrawArrays(GL_TRIANGLES, 0, 6);
  89   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_draw));
  90 }
  91
  92 TEST_F(GLTest, FeatureFlagsMatchCapabilities) {
  93   scoped_refptr<gles2::FeatureInfo> features = new gles2::FeatureInfo;
  94   EXPECT_TRUE(features->Initialize());
  95   const auto& caps = gl_.GetCapabilities();
  96   const auto& flags = features->feature_flags();
  97   EXPECT_EQ(caps.egl_image_external, flags.oes_egl_image_external);
  98   EXPECT_EQ(caps.texture_format_bgra8888, flags.ext_texture_format_bgra8888);
  99   EXPECT_EQ(caps.texture_format_etc1, flags.oes_compressed_etc1_rgb8_texture);
 100   EXPECT_EQ(caps.texture_rectangle, flags.arb_texture_rectangle);
 101   EXPECT_EQ(caps.texture_usage, flags.angle_texture_usage);
 102   EXPECT_EQ(caps.texture_storage, flags.ext_texture_storage);
 103   EXPECT_EQ(caps.discard_framebuffer, flags.ext_discard_framebuffer);
 104   EXPECT_EQ(caps.sync_query, flags.chromium_sync_query);
 105   EXPECT_EQ(caps.blend_equation_advanced, flags.blend_equation_advanced);
 106   EXPECT_EQ(caps.blend_equation_advanced_coherent,
 107             flags.blend_equation_advanced_coherent);
 108   EXPECT_EQ(caps.texture_rg, flags.ext_texture_rg);
 109 }
 110
 111 TEST_F(GLTest, GetString) {
 112   EXPECT_STREQ(
 113       "OpenGL ES 2.0 Chromium",
 114       reinterpret_cast<const char*>(glGetString(GL_VERSION)));
 115   EXPECT_STREQ(
 116       "OpenGL ES GLSL ES 1.0 Chromium",
 117       reinterpret_cast<const char*>(glGetString(GL_SHADING_LANGUAGE_VERSION)));
 118   EXPECT_STREQ(
 119       "Chromium",
 120       reinterpret_cast<const char*>(glGetString(GL_RENDERER)));
 121   EXPECT_STREQ(
 122       "Chromium",
 123       reinterpret_cast<const char*>(glGetString(GL_VENDOR)));
 124 }
 125
 126 }  // namespace gpu
 127