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| 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 <cmath> | |
| 10 | |
| 11 #include "base/basictypes.h" | |
| 12 #include "base/bind.h" | |
| 13 #include "base/message_loop/message_loop.h" | |
| 14 #include "base/run_loop.h" | |
| 15 #include "gpu/command_buffer/tests/gl_manager.h" | |
| 16 #include "gpu/command_buffer/tests/gl_test_utils.h" | |
| 17 #include "testing/gmock/include/gmock/gmock.h" | |
| 18 #include "testing/gtest/include/gtest/gtest.h" | |
| 19 | |
| 20 namespace gpu { | |
| 21 | |
| 22 class GLReadbackTest : public testing::Test { | |
| 23 protected: | |
| 24 virtual void SetUp() { | |
| 25 gl_.Initialize(GLManager::Options()); | |
| 26 } | |
| 27 | |
| 28 virtual void TearDown() { | |
| 29 gl_.Destroy(); | |
| 30 } | |
| 31 | |
| 32 static void WaitForQueryCallback(int q, base::Closure cb) { | |
| 33 unsigned int done = 0; | |
| 34 glGetQueryObjectuivEXT(q, GL_QUERY_RESULT_AVAILABLE_EXT, &done); | |
| 35 if (done) { | |
| 36 cb.Run(); | |
| 37 } else { | |
| 38 base::MessageLoop::current()->PostDelayedTask( | |
| 39 FROM_HERE, | |
| 40 base::Bind(&WaitForQueryCallback, q, cb), | |
| 41 base::TimeDelta::FromMilliseconds(3)); | |
| 42 } | |
| 43 } | |
| 44 | |
| 45 void WaitForQuery(int q) { | |
| 46 base::RunLoop run_loop; | |
| 47 WaitForQueryCallback(q, run_loop.QuitClosure()); | |
| 48 run_loop.Run(); | |
| 49 } | |
| 50 | |
| 51 GLManager gl_; | |
| 52 }; | |
| 53 | |
| 54 | |
| 55 TEST_F(GLReadbackTest, ReadPixelsWithPBOAndQuery) { | |
| 56 const GLint kBytesPerPixel = 4; | |
| 57 const GLint kWidth = 2; | |
| 58 const GLint kHeight = 2; | |
| 59 | |
| 60 GLuint b, q; | |
| 61 glClearColor(0.0, 0.0, 1.0, 1.0); | |
| 62 glClear(GL_COLOR_BUFFER_BIT); | |
| 63 glGenBuffers(1, &b); | |
| 64 glGenQueriesEXT(1, &q); | |
| 65 glBindBuffer(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, b); | |
| 66 glBufferData(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, | |
| 67 kWidth * kHeight * kBytesPerPixel, | |
| 68 NULL, | |
| 69 GL_STREAM_READ); | |
| 70 glBeginQueryEXT(GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM, q); | |
| 71 glReadPixels(0, 0, kWidth, kHeight, GL_RGBA, GL_UNSIGNED_BYTE, 0); | |
| 72 glEndQueryEXT(GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM); | |
| 73 glFlush(); | |
| 74 WaitForQuery(q); | |
| 75 | |
| 76 // TODO(hubbe): Check that glMapBufferCHROMIUM does not block here. | |
| 77 unsigned char *data = static_cast<unsigned char *>( | |
| 78 glMapBufferCHROMIUM( | |
| 79 GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, | |
| 80 GL_READ_ONLY)); | |
| 81 EXPECT_TRUE(data); | |
| 82 EXPECT_EQ(data[0], 0); // red | |
| 83 EXPECT_EQ(data[1], 0); // green | |
| 84 EXPECT_EQ(data[2], 255); // blue | |
| 85 glUnmapBufferCHROMIUM(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM); | |
| 86 glBindBuffer(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, 0); | |
| 87 glDeleteBuffers(1, &b); | |
| 88 glDeleteQueriesEXT(1, &q); | |
| 89 GLTestHelper::CheckGLError("no errors", __LINE__); | |
| 90 } | |
| 91 | |
| 92 static float HalfToFloat32(uint16 value) { | |
| 93 int32 s = (value >> 15) & 0x00000001; | |
| 94 int32 e = (value >> 10) & 0x0000001f; | |
| 95 int32 m = value & 0x000003ff; | |
| 96 | |
| 97 if (e == 0) { | |
| 98 if (m == 0) { | |
| 99 uint32 result = s << 31; | |
| 100 return bit_cast<float>(result); | |
| 101 } else { | |
| 102 while (!(m & 0x00000400)) { | |
| 103 m <<= 1; | |
| 104 e -= 1; | |
| 105 } | |
| 106 | |
| 107 e += 1; | |
| 108 m &= ~0x00000400; | |
| 109 } | |
| 110 } else if (e == 31) { | |
| 111 if (m == 0) { | |
| 112 uint32 result = (s << 31) | 0x7f800000; | |
| 113 return bit_cast<float>(result); | |
| 114 } else { | |
| 115 uint32 result = (s << 31) | 0x7f800000 | (m << 13); | |
| 116 return bit_cast<float>(result); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 e = e + (127 - 15); | |
| 121 m = m << 13; | |
| 122 | |
| 123 uint32 result = (s << 31) | (e << 23) | m; | |
| 124 return bit_cast<float>(result); | |
| 125 } | |
| 126 | |
| 127 static GLuint CompileShader(GLenum type, const char *data) { | |
| 128 const char *shaderStrings[1] = { data }; | |
| 129 | |
| 130 GLuint shader = glCreateShader(type); | |
| 131 glShaderSource(shader, 1, shaderStrings, NULL); | |
| 132 glCompileShader(shader); | |
| 133 | |
| 134 GLint compile_status = 0; | |
| 135 glGetShaderiv(shader, GL_COMPILE_STATUS, &compile_status); | |
| 136 if (compile_status != GL_TRUE) { | |
| 137 glDeleteShader(shader); | |
| 138 shader = 0; | |
| 139 } | |
| 140 | |
| 141 return shader; | |
| 142 } | |
| 143 | |
| 144 TEST_F(GLReadbackTest, ReadPixelsFloat) { | |
| 145 const GLsizei kTextureSize = 4; | |
| 146 const GLfloat kDrawColor[4] = { -10.9f, 0.5f, 10.5f, 100.12f }; | |
| 147 const GLfloat kEpsilon = 0.01f; | |
| 148 | |
| 149 struct TestFormat { | |
| 150 GLint format; | |
| 151 GLint type; | |
| 152 uint32 comp_count; | |
| 153 }; | |
| 154 TestFormat test_formats[4]; | |
| 155 size_t test_count = 0; | |
| 156 const char *extensions = reinterpret_cast<const char*>( | |
| 157 glGetString(GL_EXTENSIONS)); | |
| 158 if (strstr(extensions, "GL_OES_texture_half_float") != NULL) { | |
| 159 TestFormat rgb16f = { GL_RGB, GL_HALF_FLOAT_OES, 3 }; | |
| 160 test_formats[test_count++] = rgb16f; | |
| 161 | |
| 162 TestFormat rgba16f = { GL_RGBA, GL_HALF_FLOAT_OES, 4 }; | |
| 163 test_formats[test_count++] = rgba16f; | |
| 164 } | |
| 165 if (strstr(extensions, "GL_OES_texture_float") != NULL) { | |
| 166 TestFormat rgb32f = { GL_RGB, GL_FLOAT, 3 }; | |
| 167 test_formats[test_count++] = rgb32f; | |
| 168 | |
| 169 TestFormat rgba32f = { GL_RGBA, GL_FLOAT, 4 }; | |
| 170 test_formats[test_count++] = rgba32f; | |
| 171 } | |
| 172 | |
| 173 const char *vs_source = | |
| 174 "precision mediump float;\n" | |
| 175 "attribute vec4 a_position;\n" | |
| 176 "void main() {\n" | |
| 177 " gl_Position = a_position;\n" | |
| 178 "}\n"; | |
| 179 | |
| 180 GLuint vertex_shader = CompileShader(GL_VERTEX_SHADER, vs_source); | |
| 181 ASSERT_NE(vertex_shader, GLuint(0)); | |
| 182 | |
| 183 const char *fs_source = | |
| 184 "precision mediump float;\n" | |
| 185 "uniform vec4 u_color;\n" | |
| 186 "void main() {\n" | |
| 187 " gl_FragColor = u_color;\n" | |
| 188 "}\n"; | |
| 189 | |
| 190 GLuint fragment_shader = CompileShader(GL_FRAGMENT_SHADER, fs_source); | |
| 191 ASSERT_NE(fragment_shader, GLuint(0)); | |
| 192 | |
| 193 GLuint program = glCreateProgram(); | |
| 194 glAttachShader(program, vertex_shader); | |
| 195 glDeleteShader(vertex_shader); | |
| 196 glAttachShader(program, fragment_shader); | |
| 197 glDeleteShader(fragment_shader); | |
| 198 glLinkProgram(program); | |
| 199 | |
| 200 GLint link_status = 0; | |
| 201 glGetProgramiv(program, GL_LINK_STATUS, &link_status); | |
| 202 if (link_status != GL_TRUE) { | |
| 203 glDeleteProgram(program); | |
| 204 program = 0; | |
| 205 } | |
| 206 ASSERT_NE(program, GLuint(0)); | |
| 207 | |
| 208 EXPECT_EQ(glGetError(), GLenum(GL_NO_ERROR)); | |
| 209 | |
| 210 float quad_vertices[] = { | |
| 211 -1.0, -1.0, | |
| 212 1.0, -1.0, | |
| 213 1.0, 1.0, | |
| 214 -1.0, 1.0 | |
| 215 }; | |
| 216 | |
| 217 GLuint vertex_buffer; | |
| 218 glGenBuffers(1, &vertex_buffer); | |
| 219 glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); | |
| 220 glBufferData( | |
| 221 GL_ARRAY_BUFFER, sizeof(quad_vertices), | |
| 222 reinterpret_cast<void*>(quad_vertices), GL_STATIC_DRAW); | |
| 223 | |
| 224 GLint position_location = glGetAttribLocation(program, "a_position"); | |
| 225 glVertexAttribPointer( | |
| 226 position_location, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), NULL); | |
| 227 glEnableVertexAttribArray(position_location); | |
| 228 | |
| 229 glUseProgram(program); | |
| 230 glUniform4fv(glGetUniformLocation(program, "u_color"), 1, kDrawColor); | |
| 231 | |
| 232 EXPECT_EQ(glGetError(), GLenum(GL_NO_ERROR)); | |
| 233 | |
| 234 for (size_t ii = 0; ii < test_count; ++ii) { | |
| 235 GLuint texture_id = 0; | |
| 236 glGenTextures(1, &texture_id); | |
| 237 glBindTexture(GL_TEXTURE_2D, texture_id); | |
| 238 glTexImage2D( | |
| 239 GL_TEXTURE_2D, 0, test_formats[ii].format, kTextureSize, kTextureSize, | |
| 240 0, test_formats[ii].format, test_formats[ii].type, NULL); | |
| 241 | |
| 242 GLuint framebuffer = 0; | |
| 243 glGenFramebuffers(1, &framebuffer); | |
| 244 glBindFramebuffer(GL_FRAMEBUFFER, framebuffer); | |
| 245 glFramebufferTexture2D( | |
| 246 GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture_id, 0); | |
| 247 | |
| 248 EXPECT_EQ(glGetError(), GLenum(GL_NO_ERROR)); | |
| 249 | |
| 250 // Make sure this floating point framebuffer is supported | |
| 251 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE) { | |
| 252 // Check if this implementation supports reading floats back from this | |
| 253 // framebuffer | |
| 254 GLint read_format = 0; | |
| 255 glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &read_format); | |
| 256 GLint read_type = 0; | |
| 257 glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &read_type); | |
| 258 | |
| 259 EXPECT_EQ(glGetError(), GLenum(GL_NO_ERROR)); | |
| 260 | |
| 261 if ((read_format == GL_RGB || read_format == GL_RGBA) && | |
| 262 read_type == test_formats[ii].type) { | |
| 263 glClear(GL_COLOR_BUFFER_BIT); | |
| 264 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); | |
| 265 | |
| 266 uint32 read_comp_count = 0; | |
| 267 switch (read_format) { | |
| 268 case GL_RGB: | |
| 269 read_comp_count = 3; | |
| 270 break; | |
| 271 case GL_RGBA: | |
| 272 read_comp_count = 4; | |
| 273 break; | |
| 274 } | |
| 275 | |
| 276 switch (read_type) { | |
| 277 case GL_HALF_FLOAT_OES: { | |
| 278 scoped_ptr<GLushort[]> buf( | |
| 279 new GLushort[kTextureSize * kTextureSize * read_comp_count]); | |
| 280 glReadPixels( | |
| 281 0, 0, kTextureSize, kTextureSize, read_format, read_type, | |
| 282 buf.get()); | |
| 283 EXPECT_EQ(glGetError(), GLenum(GL_NO_ERROR)); | |
| 284 for (uint32 jj = 0; jj < kTextureSize * kTextureSize; ++jj) { | |
| 285 for (uint32 kk = 0; kk < test_formats[ii].comp_count; ++kk) { | |
| 286 EXPECT_LE( | |
| 287 std::abs(HalfToFloat32(buf[jj * read_comp_count + kk]) - | |
| 288 kDrawColor[kk]), | |
| 289 std::abs(kDrawColor[kk] * kEpsilon)); | |
| 290 } | |
| 291 } | |
| 292 break; | |
| 293 } | |
| 294 case GL_FLOAT: { | |
| 295 scoped_ptr<GLfloat[]> buf( | |
| 296 new GLfloat[kTextureSize * kTextureSize * read_comp_count]); | |
| 297 glReadPixels( | |
| 298 0, 0, kTextureSize, kTextureSize, read_format, read_type, | |
| 299 buf.get()); | |
| 300 EXPECT_EQ(glGetError(), GLenum(GL_NO_ERROR)); | |
| 301 for (uint32 jj = 0; jj < kTextureSize * kTextureSize; ++jj) { | |
| 302 for (uint32 kk = 0; kk < test_formats[ii].comp_count; ++kk) { | |
| 303 EXPECT_LE( | |
| 304 std::abs(buf[jj * read_comp_count + kk] - kDrawColor[kk]), | |
| 305 std::abs(kDrawColor[kk] * kEpsilon)); | |
| 306 } | |
| 307 } | |
| 308 break; | |
| 309 } | |
| 310 } | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 glDeleteFramebuffers(1, &framebuffer); | |
| 315 glDeleteTextures(1, &texture_id); | |
| 316 } | |
| 317 | |
| 318 glDeleteBuffers(1, &vertex_buffer); | |
| 319 glDeleteProgram(program); | |
| 320 } | |
| 321 | |
| 322 } // namespace gpu | |
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Chromium Code Reviews
Issue 138433004:
Normalize _unittest.cc filename suffix for unittests (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src