src/gpu/command_buffer/tests/gl_stream_draw_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/tests/gl_manager.h"
   9 #include "gpu/command_buffer/tests/gl_test_utils.h"
  10 #include "testing/gmock/include/gmock/gmock.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13
  14 #define SHADER(Src) #Src
  15
  16 namespace gpu {
  17
  18 class GLStreamDrawTest : public testing::Test {
  19  protected:
  20   static const int kSize = 4;
  21
  22   void SetUp() override {
  23     GLManager::Options options;
  24     options.size = gfx::Size(kSize, kSize);
  25     gl_.Initialize(options);
  26   }
  27
  28   void TearDown() override { gl_.Destroy(); }
  29
  30   GLManager gl_;
  31 };
  32
  33 namespace {
  34
  35 GLuint SetupProgram() {
  36   static const char* v_shader_str = SHADER(
  37       attribute vec4 a_position;
  38       attribute vec4 a_color;
  39       varying vec4 v_color;
  40       void main()
  41       {
  42          gl_Position = a_position;
  43          v_color = a_color;
  44       }
  45    );
  46
  47   static const char* f_shader_str = SHADER(
  48       precision mediump float;
  49       varying vec4 v_color;
  50       void main()
  51       {
  52         gl_FragColor = v_color;
  53       }
  54   );
  55
  56   GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str);
  57   glUseProgram(program);
  58   return program;
  59 }
  60
  61 }  // anonymous namespace.
  62
  63 TEST_F(GLStreamDrawTest, Basic) {
  64   static GLfloat float_red[4] = { 1.0f, 0.0f, 0.0f, 1.0f, };
  65   static GLfloat float_green[4] = { 0.0f, 1.0f, 0.0f, 1.0f, };
  66   static uint8 expected_red[4] =  {255, 0, 0, 255, };
  67   static uint8 expected_green[4] =  {0, 255, 0, 255, };
  68
  69   GLuint program = SetupProgram();
  70   GLuint position_loc = glGetAttribLocation(program, "a_position");
  71   GLuint color_loc = glGetAttribLocation(program, "a_color");
  72   GLTestHelper::SetupUnitQuad(position_loc);
  73   GLTestHelper::SetupColorsForUnitQuad(color_loc, float_red, GL_STREAM_DRAW);
  74   glDrawArrays(GL_TRIANGLES, 0, 6);
  75   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_red));
  76   GLTestHelper::SetupColorsForUnitQuad(color_loc, float_green, GL_STATIC_DRAW);
  77   glDrawArrays(GL_TRIANGLES, 0, 6);
  78   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green));
  79
  80   GLTestHelper::CheckGLError("no errors", __LINE__);
  81 }
  82
  83 // http://crbug.com/281565
  84 #if !defined(OS_ANDROID)
  85 TEST_F(GLStreamDrawTest, DrawElements) {
  86   static GLfloat float_red[4] = { 1.0f, 0.0f, 0.0f, 1.0f, };
  87   static GLfloat float_green[4] = { 0.0f, 1.0f, 0.0f, 1.0f, };
  88   static uint8 expected_red[4] =  {255, 0, 0, 255, };
  89   static uint8 expected_green[4] =  {0, 255, 0, 255, };
  90
  91   GLuint program = SetupProgram();
  92   GLuint position_loc = glGetAttribLocation(program, "a_position");
  93   GLuint color_loc = glGetAttribLocation(program, "a_color");
  94   GLTestHelper::SetupUnitQuad(position_loc);
  95   GLTestHelper::SetupColorsForUnitQuad(color_loc, float_red, GL_STREAM_DRAW);
  96
  97   GLuint index_buffer = 0;
  98   glGenBuffers(1, &index_buffer);
  99   glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, index_buffer);
 100   static GLubyte indices[] = { 0, 1, 2, 3, 4, 5, };
 101   glBufferData(
 102       GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STREAM_DRAW);
 103   glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, NULL);
 104   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_red));
 105   GLTestHelper::SetupColorsForUnitQuad(color_loc, float_green, GL_STATIC_DRAW);
 106
 107   glBufferData(
 108       GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
 109   glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, NULL);
 110   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green));
 111
 112   GLTestHelper::CheckGLError("no errors", __LINE__);
 113 }
 114 #endif
 115
 116 TEST_F(GLStreamDrawTest, VertexArrayObjects) {
 117   if (!GLTestHelper::HasExtension("GL_OES_vertex_array_object")) {
 118     return;
 119   }
 120
 121   static GLfloat float_red[4] = { 1.0f, 0.0f, 0.0f, 1.0f, };
 122   static GLfloat float_green[4] = { 0.0f, 1.0f, 0.0f, 1.0f, };
 123   static uint8 expected_red[4] =  {255, 0, 0, 255, };
 124   static uint8 expected_green[4] =  {0, 255, 0, 255, };
 125
 126   GLuint program = SetupProgram();
 127   GLuint position_loc = glGetAttribLocation(program, "a_position");
 128   GLuint color_loc = glGetAttribLocation(program, "a_color");
 129
 130   GLuint vaos[2];
 131   glGenVertexArraysOES(2, vaos);
 132
 133   glBindVertexArrayOES(vaos[0]);
 134   GLuint position_buffer = GLTestHelper::SetupUnitQuad(position_loc);
 135   GLTestHelper::SetupColorsForUnitQuad(color_loc, float_red, GL_STREAM_DRAW);
 136
 137   glBindVertexArrayOES(vaos[1]);
 138   glBindBuffer(GL_ARRAY_BUFFER, position_buffer);
 139   glEnableVertexAttribArray(position_loc);
 140   glVertexAttribPointer(position_loc, 2, GL_FLOAT, GL_FALSE, 0, 0);
 141   GLTestHelper::SetupColorsForUnitQuad(color_loc, float_green, GL_STATIC_DRAW);
 142
 143   for (int ii = 0; ii < 2; ++ii) {
 144     glBindVertexArrayOES(vaos[0]);
 145     glDrawArrays(GL_TRIANGLES, 0, 6);
 146     EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_red));
 147
 148     glBindVertexArrayOES(vaos[1]);
 149     glDrawArrays(GL_TRIANGLES, 0, 6);
 150     EXPECT_TRUE(
 151         GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green));
 152   }
 153
 154   GLTestHelper::CheckGLError("no errors", __LINE__);
 155 }
 156
 157 }  // namespace gpu
 158