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1 // Copyright (c) 2016 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 #ifndef GL_GLEXT_PROTOTYPES | |
6 #define GL_GLEXT_PROTOTYPES | |
7 #endif | |
8 | |
9 #include <GLES2/gl2.h> | |
10 #include <GLES2/gl2ext.h> | |
11 #include <GLES2/gl2extchromium.h> | |
12 #include <stddef.h> | |
13 #include <stdint.h> | |
14 | |
15 #include "base/command_line.h" | |
16 #include "gpu/command_buffer/tests/gl_manager.h" | |
17 #include "gpu/command_buffer/tests/gl_test_utils.h" | |
18 #include "testing/gmock/include/gmock/gmock.h" | |
19 #include "testing/gtest/include/gtest/gtest.h" | |
20 #include "ui/gl/gl_switches.h" | |
21 | |
22 namespace gpu { | |
23 | |
24 // A collection of tests that exercise the GL_CHROMIUM_copy_texture extension. | |
25 class GLApplyScreenSpaceAntialiasingCHROMIUMTest : public testing::Test { | |
26 protected: | |
27 void CreateAndBindDestinationTextureAndFBO(GLenum target) { | |
28 glGenTextures(1, &textures_); | |
29 glBindTexture(target, textures_); | |
30 | |
31 // Some drivers (NVidia/SGX) require texture settings to be a certain way or | |
32 // they won't report FRAMEBUFFER_COMPLETE. | |
33 glTexParameterf(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | |
34 glTexParameterf(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | |
35 glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | |
36 glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | |
37 | |
38 glGenFramebuffers(1, &framebuffer_id_); | |
39 glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_id_); | |
40 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, | |
41 textures_, 0); | |
42 } | |
43 | |
44 void SetUp() override { | |
45 base::CommandLine command_line(base::CommandLine::NO_PROGRAM); | |
46 GLManager::Options options; | |
47 gl_.InitializeWithCommandLine(options, command_line); | |
48 | |
49 available_ = | |
50 GLTestHelper::HasExtension("GL_CHROMIUM_screen_space_antialiasing"); | |
51 if (!available_) { | |
52 LOG(INFO) << "GL_CHROMIUM_screen_space_antialiasing not supported. " | |
53 "Skipping test..."; | |
54 return; | |
55 } | |
56 | |
57 CreateAndBindDestinationTextureAndFBO(GL_TEXTURE_2D); | |
58 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, | |
59 nullptr); | |
60 EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE), | |
61 glCheckFramebufferStatus(GL_FRAMEBUFFER)); | |
62 | |
63 glClearColor(0, 1, 0, 1); | |
64 glClear(GL_COLOR_BUFFER_BIT); | |
65 | |
66 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
67 if (glGetError() == GL_NO_ERROR) | |
68 return; | |
69 | |
70 // For example, linux NVidia fails with this log. | |
71 // ApplyFramebufferAttachmentCMAAINTEL: shader compilation failed: | |
72 // GL_FRAGMENT_SHADER shader compilation failed: 0(98) : error C3013: | |
73 // input/output layout qualifiers supported above GL version 130 | |
74 available_ = false; | |
75 LOG(ERROR) << "GL_CHROMIUM_screen_space_antialiasing maybe not supported " | |
76 "in non-Intel GPU."; | |
77 } | |
78 | |
79 void TearDown() override { | |
80 glDeleteTextures(1, &textures_); | |
81 glDeleteFramebuffers(1, &framebuffer_id_); | |
82 gl_.Destroy(); | |
83 } | |
84 | |
85 GLManager gl_; | |
86 GLuint textures_ = 0; | |
87 GLuint framebuffer_id_ = 0; | |
88 bool available_ = false; | |
89 }; | |
90 | |
91 // Test to ensure that the basic functionality of the extension works. | |
92 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, Basic) { | |
93 if (!available_) | |
94 return; | |
95 | |
96 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
97 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
98 | |
99 // Check the FB is still bound. | |
100 GLint value = 0; | |
101 glGetIntegerv(GL_FRAMEBUFFER_BINDING, &value); | |
102 GLuint fb_id = value; | |
103 EXPECT_EQ(framebuffer_id_, fb_id); | |
104 | |
105 // Check that FB is complete. | |
106 EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE), | |
107 glCheckFramebufferStatus(GL_FRAMEBUFFER)); | |
108 | |
109 uint8_t pixels[1 * 4] = {0u, 255u, 0u, 255u}; | |
110 GLTestHelper::CheckPixels(0, 0, 1, 1, 0, pixels); | |
111 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
112 } | |
113 | |
114 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, DefaultFBO) { | |
115 if (!available_) | |
116 return; | |
117 | |
118 glBindFramebuffer(GL_FRAMEBUFFER, 0); | |
119 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
120 EXPECT_EQ(static_cast<GLenum>(GL_INVALID_OPERATION), glGetError()); | |
121 } | |
122 | |
123 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, InternalFormat) { | |
124 if (!available_) | |
125 return; | |
126 | |
127 GLint formats[] = {GL_RGB, GL_RGBA}; | |
128 for (size_t index = 0; index < arraysize(formats); index++) { | |
129 glTexImage2D(GL_TEXTURE_2D, 0, formats[index], 1, 1, 0, formats[index], | |
130 GL_UNSIGNED_BYTE, nullptr); | |
131 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
132 | |
133 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, | |
134 textures_, 0); | |
135 | |
136 glClear(GL_COLOR_BUFFER_BIT); | |
137 | |
138 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
139 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()) << "index:" | |
140 << index; | |
141 | |
142 uint8_t pixels[1 * 4] = {0u, 255u, 0u, 255u}; | |
143 GLTestHelper::CheckPixels(0, 0, 1, 1, 0, pixels); | |
144 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
145 } | |
146 } | |
147 | |
148 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, InternalFormatNotSupported) { | |
149 if (!available_) | |
150 return; | |
151 | |
152 // Check unsupported format reports error. | |
153 GLint unsupported_formats[] = {GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA}; | |
154 for (size_t index = 0; index < arraysize(unsupported_formats); index++) { | |
155 glTexImage2D(GL_TEXTURE_2D, 0, unsupported_formats[index], 1, 1, 0, | |
156 unsupported_formats[index], GL_UNSIGNED_BYTE, nullptr); | |
157 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
158 | |
159 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, | |
160 textures_, 0); | |
161 | |
162 glClear(GL_COLOR_BUFFER_BIT); | |
163 | |
164 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
165 EXPECT_EQ(static_cast<GLenum>(GL_INVALID_FRAMEBUFFER_OPERATION), | |
166 glGetError()) | |
167 << "index:" << index; | |
168 } | |
169 } | |
170 | |
171 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, ImmutableTexture) { | |
172 if (!available_) | |
173 return; | |
174 | |
175 if (!GLTestHelper::HasExtension("GL_EXT_texture_storage")) { | |
176 LOG(INFO) << "GL_EXT_texture_storage not supported. Skipping test..."; | |
177 return; | |
178 } | |
179 GLenum internal_formats[] = {GL_RGB8_OES, GL_RGBA8_OES, GL_BGRA8_EXT}; | |
180 for (auto internal_format : internal_formats) { | |
181 glDeleteTextures(1, &textures_); | |
182 glDeleteFramebuffers(1, &framebuffer_id_); | |
183 CreateAndBindDestinationTextureAndFBO(GL_TEXTURE_2D); | |
184 glTexStorage2DEXT(GL_TEXTURE_2D, 1, internal_format, 1, 1); | |
185 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
186 EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE), | |
187 glCheckFramebufferStatus(GL_FRAMEBUFFER)); | |
188 | |
189 glClear(GL_COLOR_BUFFER_BIT); | |
190 | |
191 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
192 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
193 | |
194 uint8_t pixels[1 * 4] = {0u, 255u, 0u, 255u}; | |
195 GLTestHelper::CheckPixels(0, 0, 1, 1, 0, pixels); | |
196 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
197 } | |
198 } | |
199 | |
200 // Similar to webgl conformance test 'testAntialias(true)' in | |
201 // context-attributes-alpha-depth-stencil-antialias.html | |
202 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, AntiAliasing) { | |
203 if (!available_) | |
204 return; | |
205 | |
206 // Fill colors in the FBO as follows | |
207 // +-----+ | |
208 // |R|R| | | |
209 // +-----+ | |
210 // |R| | | | |
211 // +-----+ | |
212 // | | | | | |
213 // +-+-+-+ | |
214 const int length = 3; | |
215 uint8_t rgba_pixels[4 * length * length] = { | |
216 255u, 0u, 0u, 255u, 255u, 0u, 0u, 255u, 0u, 0u, 0u, 0u, | |
217 255u, 0u, 0u, 255u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, | |
218 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, | |
219 }; | |
220 glBindTexture(GL_TEXTURE_2D, textures_); | |
221 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, length, length, 0, GL_RGBA, | |
222 GL_UNSIGNED_BYTE, rgba_pixels); | |
223 | |
224 uint8_t transparent[4] = {0u, 0u, 0u, 0u}; | |
225 uint8_t red[4] = {255u, 0u, 0u, 255u}; | |
226 GLTestHelper::CheckPixels(0, 0, 1, 1, 0, red); | |
227 GLTestHelper::CheckPixels(0, 1, 1, 1, 0, red); | |
228 GLTestHelper::CheckPixels(0, 2, 1, 1, 0, transparent); | |
229 GLTestHelper::CheckPixels(1, 0, 1, 1, 0, red); | |
230 GLTestHelper::CheckPixels(1, 1, 1, 1, 0, transparent); | |
231 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
232 | |
233 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
234 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
235 | |
236 GLTestHelper::CheckPixels(0, 0, 1, 1, 0, red); | |
237 GLTestHelper::CheckPixels(2, 2, 1, 1, 0, transparent); | |
238 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
239 | |
240 // Check if middle pixel is anti-aliased. | |
241 uint8_t pixels[4] = {0u}; | |
242 glReadPixels(1, 1, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixels); | |
243 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
244 EXPECT_NE(transparent, pixels); | |
245 EXPECT_NE(red, pixels); | |
246 EXPECT_TRUE(pixels[0] > transparent[0] && pixels[0] < red[0]); | |
247 EXPECT_EQ(0u, pixels[1]); | |
248 EXPECT_EQ(0u, pixels[2]); | |
249 EXPECT_TRUE(pixels[3] > transparent[3] && pixels[3] < red[3]); | |
250 } | |
251 | |
252 namespace { | |
253 | |
254 void glEnableDisable(GLint param, GLboolean value) { | |
255 if (value) | |
256 glEnable(param); | |
257 else | |
258 glDisable(param); | |
259 } | |
260 | |
261 } // unnamed namespace | |
262 | |
263 // Validate that some basic GL state is not touched upon execution of | |
264 // the extension. | |
265 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, BasicStatePreservation) { | |
266 if (!available_) | |
267 return; | |
268 | |
269 GLboolean reference_settings[2] = {GL_TRUE, GL_FALSE}; | |
270 for (int x = 0; x < 2; ++x) { | |
271 GLboolean setting = reference_settings[x]; | |
272 glEnableDisable(GL_DEPTH_TEST, setting); | |
273 glEnableDisable(GL_SCISSOR_TEST, setting); | |
274 glEnableDisable(GL_STENCIL_TEST, setting); | |
275 glEnableDisable(GL_CULL_FACE, setting); | |
276 glEnableDisable(GL_BLEND, setting); | |
277 glColorMask(setting, setting, setting, setting); | |
278 glDepthMask(setting); | |
279 | |
280 glActiveTexture(GL_TEXTURE1 + x); | |
281 | |
282 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
283 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
284 | |
285 EXPECT_EQ(setting, glIsEnabled(GL_DEPTH_TEST)); | |
286 EXPECT_EQ(setting, glIsEnabled(GL_SCISSOR_TEST)); | |
287 EXPECT_EQ(setting, glIsEnabled(GL_STENCIL_TEST)); | |
288 EXPECT_EQ(setting, glIsEnabled(GL_CULL_FACE)); | |
289 EXPECT_EQ(setting, glIsEnabled(GL_BLEND)); | |
290 | |
291 GLboolean bool_array[4] = {GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE}; | |
292 glGetBooleanv(GL_DEPTH_WRITEMASK, bool_array); | |
293 EXPECT_EQ(setting, bool_array[0]); | |
294 | |
295 bool_array[0] = GL_FALSE; | |
296 glGetBooleanv(GL_COLOR_WRITEMASK, bool_array); | |
297 EXPECT_EQ(setting, bool_array[0]); | |
298 EXPECT_EQ(setting, bool_array[1]); | |
299 EXPECT_EQ(setting, bool_array[2]); | |
300 EXPECT_EQ(setting, bool_array[3]); | |
301 | |
302 GLint active_texture = 0; | |
303 glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture); | |
304 EXPECT_EQ(GL_TEXTURE1 + x, active_texture); | |
305 } | |
306 | |
307 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
308 }; | |
309 | |
310 // Verify that invocation of the extension does not modify the bound | |
311 // texture state. | |
312 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, TextureStatePreserved) { | |
313 if (!available_) | |
314 return; | |
315 | |
316 GLuint texture_ids[2]; | |
317 glGenTextures(2, texture_ids); | |
318 | |
319 glActiveTexture(GL_TEXTURE0); | |
320 glBindTexture(GL_TEXTURE_2D, texture_ids[0]); | |
321 | |
322 glActiveTexture(GL_TEXTURE1); | |
323 glBindTexture(GL_TEXTURE_2D, texture_ids[1]); | |
324 | |
325 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
326 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
327 | |
328 GLint active_texture = 0; | |
329 glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture); | |
330 EXPECT_EQ(GL_TEXTURE1, active_texture); | |
331 | |
332 GLint bound_texture = 0; | |
333 glGetIntegerv(GL_TEXTURE_BINDING_2D, &bound_texture); | |
334 EXPECT_EQ(texture_ids[1], static_cast<GLuint>(bound_texture)); | |
335 glBindTexture(GL_TEXTURE_2D, 0); | |
336 | |
337 bound_texture = 0; | |
338 glActiveTexture(GL_TEXTURE0); | |
339 glGetIntegerv(GL_TEXTURE_BINDING_2D, &bound_texture); | |
340 EXPECT_EQ(texture_ids[0], static_cast<GLuint>(bound_texture)); | |
341 glBindTexture(GL_TEXTURE_2D, 0); | |
342 | |
343 glDeleteTextures(2, texture_ids); | |
344 | |
345 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
346 } | |
347 | |
348 TEST_F(GLApplyScreenSpaceAntialiasingCHROMIUMTest, ProgramStatePreservation) { | |
349 if (!available_) | |
350 return; | |
351 | |
352 // unbind the one created in setup. | |
353 glBindFramebuffer(GL_FRAMEBUFFER, 0); | |
354 glBindTexture(GL_TEXTURE_2D, 0); | |
355 | |
356 GLManager gl2; | |
357 GLManager::Options options; | |
358 options.size = gfx::Size(16, 16); | |
359 options.share_group_manager = &gl_; | |
360 gl2.Initialize(options); | |
361 gl_.MakeCurrent(); | |
362 | |
363 static const char* v_shader_str = | |
364 "attribute vec4 g_Position;\n" | |
365 "void main()\n" | |
366 "{\n" | |
367 " gl_Position = g_Position;\n" | |
368 "}\n"; | |
369 static const char* f_shader_str = | |
370 "precision mediump float;\n" | |
371 "void main()\n" | |
372 "{\n" | |
373 " gl_FragColor = vec4(0,1,0,1);\n" | |
374 "}\n"; | |
375 | |
376 GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str); | |
377 glUseProgram(program); | |
378 GLuint position_loc = glGetAttribLocation(program, "g_Position"); | |
379 glFlush(); | |
380 | |
381 // Delete program from other context. | |
382 gl2.MakeCurrent(); | |
383 glDeleteProgram(program); | |
384 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
385 glFlush(); | |
386 | |
387 // Program should still be usable on this context. | |
388 gl_.MakeCurrent(); | |
389 | |
390 GLTestHelper::SetupUnitQuad(position_loc); | |
391 | |
392 // test using program before | |
393 uint8_t expected[] = { | |
394 0, 255, 0, 255, | |
395 }; | |
396 uint8_t zero[] = { | |
397 0, 0, 0, 0, | |
398 }; | |
399 glClearColor(0, 0, 0, 0); | |
400 glClear(GL_COLOR_BUFFER_BIT); | |
401 EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, zero)); | |
402 glDrawArrays(GL_TRIANGLES, 0, 6); | |
403 EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected)); | |
404 | |
405 // Call copyTextureCHROMIUM | |
406 uint8_t pixels[1 * 4] = {255u, 0u, 0u, 255u}; | |
407 glBindTexture(GL_TEXTURE_2D, textures_); | |
408 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, | |
409 pixels); | |
410 glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_id_); | |
411 glApplyScreenSpaceAntialiasingCHROMIUM(); | |
412 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
413 | |
414 // test using program after | |
415 glClear(GL_COLOR_BUFFER_BIT); | |
416 EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, zero)); | |
417 glDrawArrays(GL_TRIANGLES, 0, 6); | |
418 EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected)); | |
419 | |
420 EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | |
421 | |
422 gl2.MakeCurrent(); | |
423 gl2.Destroy(); | |
424 gl_.MakeCurrent(); | |
425 } | |
426 | |
427 } // namespace gpu | |
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