src/gpu/command_buffer/tests/gl_bind_uniform_location_unittest.cc

   1 // Copyright (c) 2012 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 #include <GLES2/gl2extchromium.h>
   8
   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 #define SHADER(Src) #Src
  15
  16 namespace gpu {
  17
  18 class BindUniformLocationTest : public testing::Test {
  19  protected:
  20   static const GLsizei kResolution = 4;
  21   virtual void SetUp() {
  22     GLManager::Options options;
  23     options.size = gfx::Size(kResolution, kResolution);
  24     gl_.Initialize(options);
  25   }
  26
  27   virtual void TearDown() {
  28     gl_.Destroy();
  29   }
  30
  31   GLManager gl_;
  32 };
  33
  34 TEST_F(BindUniformLocationTest, Basic) {
  35   ASSERT_TRUE(
  36       GLTestHelper::HasExtension("GL_CHROMIUM_bind_uniform_location"));
  37
  38   static const char* v_shader_str = SHADER(
  39       attribute vec4 a_position;
  40       void main()
  41       {
  42          gl_Position = a_position;
  43       }
  44   );
  45   static const char* f_shader_str = SHADER(
  46       precision mediump float;
  47       uniform vec4 u_colorC;
  48       uniform vec4 u_colorB[2];
  49       uniform vec4 u_colorA;
  50       void main()
  51       {
  52         gl_FragColor = u_colorA + u_colorB[0] + u_colorB[1] + u_colorC;
  53       }
  54   );
  55
  56   GLint color_a_location = 3;
  57   GLint color_b_location = 10;
  58   GLint color_c_location = 5;
  59
  60   GLuint vertex_shader = GLTestHelper::LoadShader(
  61       GL_VERTEX_SHADER, v_shader_str);
  62   GLuint fragment_shader = GLTestHelper::LoadShader(
  63       GL_FRAGMENT_SHADER, f_shader_str);
  64
  65   GLuint program = glCreateProgram();
  66
  67   glBindUniformLocationCHROMIUM(program, color_a_location, "u_colorA");
  68   glBindUniformLocationCHROMIUM(program, color_b_location, "u_colorB[0]");
  69   glBindUniformLocationCHROMIUM(program, color_c_location, "u_colorC");
  70
  71   glAttachShader(program, vertex_shader);
  72   glAttachShader(program, fragment_shader);
  73   // Link the program
  74   glLinkProgram(program);
  75   // Check the link status
  76   GLint linked = 0;
  77   glGetProgramiv(program, GL_LINK_STATUS, &linked);
  78   EXPECT_EQ(1, linked);
  79
  80   GLint position_loc = glGetAttribLocation(program, "a_position");
  81
  82   GLTestHelper::SetupUnitQuad(position_loc);
  83
  84   glUseProgram(program);
  85
  86   static const float color_b[] = {
  87     0.0f, 0.50f, 0.0f, 0.0f,
  88     0.0f, 0.0f, 0.75f, 0.0f,
  89   };
  90
  91   glUniform4f(color_a_location, 0.25f, 0.0f, 0.0f, 0.0f);
  92   glUniform4fv(color_b_location, 2, color_b);
  93   glUniform4f(color_c_location, 0.0f, 0.0f, 0.0f, 1.0f);
  94
  95   glDrawArrays(GL_TRIANGLES, 0, 6);
  96
  97   static const uint8 expected[] = { 64, 128, 192, 255 };
  98   EXPECT_TRUE(
  99       GLTestHelper::CheckPixels(0, 0, kResolution, kResolution, 1, expected));
 100
 101   GLTestHelper::CheckGLError("no errors", __LINE__);
 102 }
 103
 104 TEST_F(BindUniformLocationTest, Compositor) {
 105   ASSERT_TRUE(
 106       GLTestHelper::HasExtension("GL_CHROMIUM_bind_uniform_location"));
 107
 108   static const char* v_shader_str = SHADER(
 109       attribute vec4 a_position;
 110       attribute vec2 a_texCoord;
 111       uniform mat4 matrix;
 112       uniform vec2 color_a[4];
 113       uniform vec4 color_b;
 114       varying vec4 v_color;
 115       void main()
 116       {
 117           v_color.xy = color_a[0] + color_a[1];
 118           v_color.zw = color_a[2] + color_a[3];
 119           v_color += color_b;
 120           gl_Position = matrix * a_position;
 121       }
 122   );
 123
 124   static const char* f_shader_str =  SHADER(
 125       precision mediump float;
 126       varying vec4 v_color;
 127       uniform float alpha;
 128       uniform vec4 multiplier;
 129       uniform vec3 color_c[8];
 130       void main()
 131       {
 132           vec4 color_c_sum = vec4(0.0);
 133           color_c_sum.xyz += color_c[0];
 134           color_c_sum.xyz += color_c[1];
 135           color_c_sum.xyz += color_c[2];
 136           color_c_sum.xyz += color_c[3];
 137           color_c_sum.xyz += color_c[4];
 138           color_c_sum.xyz += color_c[5];
 139           color_c_sum.xyz += color_c[6];
 140           color_c_sum.xyz += color_c[7];
 141           color_c_sum.w = alpha;
 142           color_c_sum *= multiplier;
 143           gl_FragColor = v_color + color_c_sum;
 144       }
 145   );
 146
 147   int counter = 0;
 148   int matrix_location = counter++;
 149   int color_a_location = counter++;
 150   int color_b_location = counter++;
 151   int alpha_location = counter++;
 152   int multiplier_location = counter++;
 153   int color_c_location = counter++;
 154
 155   GLuint vertex_shader = GLTestHelper::LoadShader(
 156       GL_VERTEX_SHADER, v_shader_str);
 157   GLuint fragment_shader = GLTestHelper::LoadShader(
 158       GL_FRAGMENT_SHADER, f_shader_str);
 159
 160   GLuint program = glCreateProgram();
 161
 162   glBindUniformLocationCHROMIUM(program, matrix_location, "matrix");
 163   glBindUniformLocationCHROMIUM(program, color_a_location, "color_a");
 164   glBindUniformLocationCHROMIUM(program, color_b_location, "color_b");
 165   glBindUniformLocationCHROMIUM(program, alpha_location, "alpha");
 166   glBindUniformLocationCHROMIUM(program, multiplier_location, "multiplier");
 167   glBindUniformLocationCHROMIUM(program, color_c_location, "color_c");
 168
 169   glAttachShader(program, vertex_shader);
 170   glAttachShader(program, fragment_shader);
 171   // Link the program
 172   glLinkProgram(program);
 173   // Check the link status
 174   GLint linked = 0;
 175   glGetProgramiv(program, GL_LINK_STATUS, &linked);
 176   EXPECT_EQ(1, linked);
 177
 178   GLint position_loc = glGetAttribLocation(program, "a_position");
 179
 180   GLTestHelper::SetupUnitQuad(position_loc);
 181
 182   glUseProgram(program);
 183
 184   static const float color_a[] = {
 185     0.1f, 0.1f, 0.1f, 0.1f,
 186     0.1f, 0.1f, 0.1f, 0.1f,
 187   };
 188
 189   static const float color_c[] = {
 190     0.1f, 0.1f, 0.1f,
 191     0.1f, 0.1f, 0.1f,
 192     0.1f, 0.1f, 0.1f,
 193     0.1f, 0.1f, 0.1f,
 194     0.1f, 0.1f, 0.1f,
 195     0.1f, 0.1f, 0.1f,
 196     0.1f, 0.1f, 0.1f,
 197     0.1f, 0.1f, 0.1f,
 198   };
 199
 200   static const float identity[] = {
 201     1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1,
 202   };
 203
 204   glUniformMatrix4fv(matrix_location, 1, false, identity);
 205   glUniform2fv(color_a_location, 4, color_a);
 206   glUniform4f(color_b_location, 0.2f, 0.2f, 0.2f, 0.2f);
 207   glUniform1f(alpha_location, 0.8f);
 208   glUniform4f(multiplier_location, 0.5f, 0.5f, 0.5f, 0.5f);
 209   glUniform3fv(color_c_location, 8, color_c);
 210
 211   glDrawArrays(GL_TRIANGLES, 0, 6);
 212
 213   static const uint8 expected[] = { 204, 204, 204, 204 };
 214   EXPECT_TRUE(
 215       GLTestHelper::CheckPixels(0, 0, kResolution, kResolution, 1, expected));
 216
 217   GLTestHelper::CheckGLError("no errors", __LINE__);
 218
 219 }
 220
 221 }  // namespace gpu
 222
 223
 224