Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / angle / e8a1f78c5bcbb2f88ca107e621d6dc2185873721 / . / tests / angle_tests / BlitFramebufferANGLETest.cpp
blob: cce73cc268385993992a229b50e58f28dc3d0a87 [file] [log] [blame]
Geoff Lange8a1f782013-10-18 16:14:30 -0400[diff] [blame^]1#include "ANGLETest.h"
2
3class BlitFramebufferANGLETest : public ANGLETest
4{
5protected:
6 BlitFramebufferANGLETest()
7 {
8 setWindowWidth(256);
9 setWindowHeight(256);
10 setRedBits(8);
11 setGreenBits(8);
12 setBlueBits(8);
13 setAlphaBits(8);
14 setDepthBits(24);
15
16 mCheckerProgram = 0;
17 mBlueProgram = 0;
18
19 mOriginalFBO = 0;
20
21 mUserFBO = 0;
22 mUserColorBuffer = 0;
23 mUserDepthStencilBuffer = 0;
24
25 mSmallFBO = 0;
26 mSmallColorBuffer = 0;
27 mSmallDepthStencilBuffer = 0;
28
29 mColorOnlyFBO = 0;
30 mColorOnlyColorBuffer = 0;
31
32 mDiffFormatFBO = 0;
33 mDiffFormatColorBuffer = 0;
34
35 mDiffSizeFBO = 0;
36 mDiffSizeColorBuffer = 0;
37
38 mMRTFBO = 0;
39 mMRTColorBuffer0 = 0;
40 mMRTColorBuffer1 = 0;
41 }
42
43 virtual void SetUp()
44 {
45 ANGLETest::SetUp();
46
47 const std::string passthroughVS = SHADER_SOURCE
48 (
49 precision highp float;
50 attribute vec4 position;
51 varying vec4 pos;
52
53 void main()
54 {
55 gl_Position = position;
56 pos = position;
57 }
58 );
59
60 const std::string checkeredFS = SHADER_SOURCE
61 (
62 precision highp float;
63 varying vec4 pos;
64
65 void main()
66 {
67 if (pos.x * pos.y > 0.0)
68 {
69 gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
70 }
71 else
72 {
73 gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
74 }
75 }
76 );
77
78 const std::string blueFS = SHADER_SOURCE
79 (
80 precision highp float;
81 varying vec4 pos;
82
83 void main()
84 {
85 gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0);
86 }
87 );
88
89 mCheckerProgram = compileProgram(passthroughVS, checkeredFS);
90 mBlueProgram = compileProgram(passthroughVS, blueFS);
91 if (mCheckerProgram == 0 || mBlueProgram == 0)
92 {
93 FAIL() << "shader compilation failed.";
94 }
95
96 EXPECT_GL_NO_ERROR();
97
98 GLint originalFBO;
99 glGetIntegerv(GL_FRAMEBUFFER_BINDING, &originalFBO);
100 if (originalFBO >= 0)
101 {
102 mOriginalFBO = (GLuint)originalFBO;
103 }
104
105 GLenum format = GL_BGRA8_EXT;
106
107 glGenFramebuffers(1, &mUserFBO);
108 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
109 glGenTextures(1, &mUserColorBuffer);
110 glGenRenderbuffers(1, &mUserDepthStencilBuffer);
111 glBindTexture(GL_TEXTURE_2D, mUserColorBuffer);
112 glTexStorage2DEXT(GL_TEXTURE_2D, 1, format, getWindowWidth(), getWindowHeight());
113 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mUserColorBuffer, 0);
114 glBindRenderbuffer(GL_RENDERBUFFER, mUserDepthStencilBuffer);
115 glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, getWindowWidth(), getWindowHeight());
116 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mUserDepthStencilBuffer);
117 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mUserDepthStencilBuffer);
118
119 ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);
120 ASSERT_GL_NO_ERROR();
121
122 glGenFramebuffers(1, &mSmallFBO);
123 glBindFramebuffer(GL_FRAMEBUFFER, mSmallFBO);
124 glGenTextures(1, &mSmallColorBuffer);
125 glGenRenderbuffers(1, &mSmallDepthStencilBuffer);
126 glBindTexture(GL_TEXTURE_2D, mSmallColorBuffer);
127 glTexStorage2DEXT(GL_TEXTURE_2D, 1, format, getWindowWidth() / 2, getWindowHeight() / 2);
128 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mSmallColorBuffer, 0);
129 glBindRenderbuffer(GL_RENDERBUFFER, mSmallDepthStencilBuffer);
130 glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, getWindowWidth() / 2, getWindowHeight() / 2);
131 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mSmallDepthStencilBuffer);
132 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mSmallDepthStencilBuffer);
133
134 ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);
135 ASSERT_GL_NO_ERROR();
136
137 glGenFramebuffers(1, &mColorOnlyFBO);
138 glBindFramebuffer(GL_FRAMEBUFFER, mColorOnlyFBO);
139 glGenTextures(1, &mColorOnlyColorBuffer);
140 glBindTexture(GL_TEXTURE_2D, mColorOnlyColorBuffer);
141 glTexStorage2DEXT(GL_TEXTURE_2D, 1, format, getWindowWidth(), getWindowHeight());
142 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mColorOnlyColorBuffer, 0);
143
144 ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);
145 ASSERT_GL_NO_ERROR();
146
147 glGenFramebuffers(1, &mDiffFormatFBO);
148 glBindFramebuffer(GL_FRAMEBUFFER, mDiffFormatFBO);
149 glGenTextures(1, &mDiffFormatColorBuffer);
150 glBindTexture(GL_TEXTURE_2D, mDiffFormatColorBuffer);
151 glTexStorage2DEXT(GL_TEXTURE_2D, 1, GL_RGB565, getWindowWidth(), getWindowHeight());
152 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mDiffFormatColorBuffer, 0);
153
154 ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);
155 ASSERT_GL_NO_ERROR();
156
157 glGenFramebuffers(1, &mDiffSizeFBO);
158 glBindFramebuffer(GL_FRAMEBUFFER, mDiffSizeFBO);
159 glGenTextures(1, &mDiffSizeColorBuffer);
160 glBindTexture(GL_TEXTURE_2D, mDiffSizeColorBuffer);
161 glTexStorage2DEXT(GL_TEXTURE_2D, 1, format, getWindowWidth()*2, getWindowHeight()*2);
162 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mDiffSizeColorBuffer, 0);
163
164 ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);
165 ASSERT_GL_NO_ERROR();
166
167 if (extensionEnabled("GL_EXT_draw_buffers"))
168 {
169 glGenFramebuffers(1, &mMRTFBO);
170 glBindFramebuffer(GL_FRAMEBUFFER, mMRTFBO);
171 glGenTextures(1, &mMRTColorBuffer0);
172 glGenTextures(1, &mMRTColorBuffer1);
173 glBindTexture(GL_TEXTURE_2D, mMRTColorBuffer0);
174 glTexStorage2DEXT(GL_TEXTURE_2D, 1, format, getWindowWidth(), getWindowHeight());
175 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, mMRTColorBuffer0, 0);
176 glBindTexture(GL_TEXTURE_2D, mMRTColorBuffer1);
177 glTexStorage2DEXT(GL_TEXTURE_2D, 1, format, getWindowWidth(), getWindowHeight());
178 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_2D, mMRTColorBuffer1, 0);
179
180 ASSERT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GL_FRAMEBUFFER_COMPLETE);
181 ASSERT_GL_NO_ERROR();
182 }
183
184 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
185 }
186
187 virtual void TearDown()
188 {
189 glDeleteProgram(mCheckerProgram);
190 glDeleteProgram(mBlueProgram);
191
192 glDeleteFramebuffers(1, &mUserFBO);
193 glDeleteTextures(1, &mUserColorBuffer);
194 glDeleteRenderbuffers(1, &mUserDepthStencilBuffer);
195
196 glDeleteFramebuffers(1, &mSmallFBO);
197 glDeleteTextures(1, &mSmallColorBuffer);
198 glDeleteRenderbuffers(1, &mSmallDepthStencilBuffer);
199
200 glDeleteFramebuffers(1, &mColorOnlyFBO);
201 glDeleteTextures(1, &mSmallDepthStencilBuffer);
202
203 glDeleteFramebuffers(1, &mDiffFormatFBO);
204 glDeleteTextures(1, &mDiffFormatColorBuffer);
205
206 glDeleteFramebuffers(1, &mDiffSizeFBO);
207 glDeleteTextures(1, &mDiffSizeColorBuffer);
208
209 if (extensionEnabled("GL_EXT_draw_buffers"))
210 {
211 glDeleteFramebuffers(1, &mMRTFBO);
212 glDeleteTextures(1, &mMRTColorBuffer0);
213 glDeleteTextures(1, &mMRTColorBuffer1);
214 }
215
216 ANGLETest::TearDown();
217 }
218
219 GLuint mCheckerProgram;
220 GLuint mBlueProgram;
221
222 GLuint mOriginalFBO;
223
224 GLuint mUserFBO;
225 GLuint mUserColorBuffer;
226 GLuint mUserDepthStencilBuffer;
227
228 GLuint mSmallFBO;
229 GLuint mSmallColorBuffer;
230 GLuint mSmallDepthStencilBuffer;
231
232 GLuint mColorOnlyFBO;
233 GLuint mColorOnlyColorBuffer;
234
235 GLuint mDiffFormatFBO;
236 GLuint mDiffFormatColorBuffer;
237
238 GLuint mDiffSizeFBO;
239 GLuint mDiffSizeColorBuffer;
240
241 GLuint mMRTFBO;
242 GLuint mMRTColorBuffer0;
243 GLuint mMRTColorBuffer1;
244};
245
246// Draw to user-created framebuffer, blit whole-buffer color to original framebuffer.
247TEST_F(BlitFramebufferANGLETest, blit_color_to_default)
248{
249 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
250
251 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
252
253 drawQuad(mCheckerProgram, "position", 0.8f);
254
255 EXPECT_GL_NO_ERROR();
256
257 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
258 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
259
260 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
261 GL_COLOR_BUFFER_BIT, GL_NEAREST);
262
263 EXPECT_GL_NO_ERROR();
264
265 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
266
267 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
268 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
269 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
270 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
271}
272
273// Draw to system framebuffer, blit whole-buffer color to user-created framebuffer.
274TEST_F(BlitFramebufferANGLETest, reverse_color_blit)
275{
276 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
277
278 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
279
280 drawQuad(mCheckerProgram, "position", 0.8f);
281
282 EXPECT_GL_NO_ERROR();
283
284 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mOriginalFBO);
285 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mUserFBO);
286
287 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
288 GL_COLOR_BUFFER_BIT, GL_NEAREST);
289
290 EXPECT_GL_NO_ERROR();
291
292 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
293
294 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
295 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
296 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
297 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
298}
299
300// blit from user-created FBO to system framebuffer, with the scissor test enabled.
301TEST_F(BlitFramebufferANGLETest, scissored_blit)
302{
303 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
304
305 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
306
307 drawQuad(mCheckerProgram, "position", 0.8f);
308
309 EXPECT_GL_NO_ERROR();
310
311 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
312 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
313
314 glClearColor(1.0, 1.0, 1.0, 1.0);
315 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
316
317 glScissor(getWindowWidth() / 2, 0, getWindowWidth() / 2, getWindowHeight());
318 glEnable(GL_SCISSOR_TEST);
319
320 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
321 GL_COLOR_BUFFER_BIT, GL_NEAREST);
322
323 EXPECT_GL_NO_ERROR();
324
325 glDisable(GL_SCISSOR_TEST);
326
327 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
328
329 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 255, 255, 255);
330 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
331 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
332 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 255, 255, 255);
333}
334
335// blit from system FBO to user-created framebuffer, with the scissor test enabled.
336TEST_F(BlitFramebufferANGLETest, reverse_scissored_blit)
337{
338 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
339
340 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
341
342 drawQuad(mCheckerProgram, "position", 0.8f);
343
344 EXPECT_GL_NO_ERROR();
345
346 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mUserFBO);
347 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mOriginalFBO);
348
349 glClearColor(1.0, 1.0, 1.0, 1.0);
350 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
351
352 glScissor(getWindowWidth() / 2, 0, getWindowWidth() / 2, getWindowHeight());
353 glEnable(GL_SCISSOR_TEST);
354
355 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
356 GL_COLOR_BUFFER_BIT, GL_NEAREST);
357
358 EXPECT_GL_NO_ERROR();
359
360 glDisable(GL_SCISSOR_TEST);
361
362 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
363
364 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 255, 255, 255);
365 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
366 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
367 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 255, 255, 255);
368}
369
370// blit from user-created FBO to system framebuffer, using region larger than buffer.
371TEST_F(BlitFramebufferANGLETest, oversized_blit)
372{
373 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
374
375 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
376
377 drawQuad(mCheckerProgram, "position", 0.8f);
378
379 EXPECT_GL_NO_ERROR();
380
381 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
382 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
383
384 glClearColor(1.0, 1.0, 1.0, 1.0);
385 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
386
387 glBlitFramebufferANGLE(0, 0, getWindowWidth() * 2, getWindowHeight() * 2, 0, 0, getWindowWidth() * 2, getWindowHeight() * 2,
388 GL_COLOR_BUFFER_BIT, GL_NEAREST);
389
390 EXPECT_GL_NO_ERROR();
391
392 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
393
394 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
395 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
396 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
397 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
398}
399
400// blit from system FBO to user-created framebuffer, using region larger than buffer.
401TEST_F(BlitFramebufferANGLETest, reverse_oversized_blit)
402{
403 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
404
405 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
406
407 drawQuad(mCheckerProgram, "position", 0.8f);
408
409 EXPECT_GL_NO_ERROR();
410
411 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mUserFBO);
412 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mOriginalFBO);
413
414 glClearColor(1.0, 1.0, 1.0, 1.0);
415 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
416
417 glBlitFramebufferANGLE(0, 0, getWindowWidth() * 2, getWindowHeight() * 2, 0, 0, getWindowWidth() * 2, getWindowHeight() * 2,
418 GL_COLOR_BUFFER_BIT, GL_NEAREST);
419 EXPECT_GL_NO_ERROR();
420
421 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
422
423 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
424 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
425 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
426 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
427}
428
429// blit from user-created FBO to system framebuffer, with depth buffer.
430TEST_F(BlitFramebufferANGLETest, blit_with_depth)
431{
432 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
433
434 glDepthMask(GL_TRUE);
435 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
436
437 glEnable(GL_DEPTH_TEST);
438
439 drawQuad(mCheckerProgram, "position", 0.3f);
440
441 EXPECT_GL_NO_ERROR();
442
443 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
444 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
445
446 glClearColor(1.0, 1.0, 1.0, 1.0);
447 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
448
449 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
450 GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, GL_NEAREST);
451 EXPECT_GL_NO_ERROR();
452
453 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
454
455 // if blit is happening correctly, this quad will not draw, because it is behind the blitted one
456 drawQuad(mBlueProgram, "position", 0.8f);
457
458 glDisable(GL_DEPTH_TEST);
459
460 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
461 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
462 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
463 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
464}
465
466// blit from system FBO to user-created framebuffer, with depth buffer.
467TEST_F(BlitFramebufferANGLETest, reverse_blit_with_depth)
468{
469 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
470
471 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
472
473 glEnable(GL_DEPTH_TEST);
474
475 drawQuad(mCheckerProgram, "position", 0.3f);
476
477 EXPECT_GL_NO_ERROR();
478
479 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mUserFBO);
480 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mOriginalFBO);
481
482 glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
483 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
484
485 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
486 GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, GL_NEAREST);
487 EXPECT_GL_NO_ERROR();
488
489 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
490
491 // if blit is happening correctly, this quad will not draw, because it is behind the blitted one
492
493 drawQuad(mBlueProgram, "position", 0.8f);
494
495 glDisable(GL_DEPTH_TEST);
496
497 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
498 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
499 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
500 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
501}
502
503// blit from one region of the system fbo to another-- this should fail.
504TEST_F(BlitFramebufferANGLETest, blit_same_buffer_original)
505{
506 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
507
508 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
509
510 drawQuad(mCheckerProgram, "position", 0.3f);
511
512 EXPECT_GL_NO_ERROR();
513
514 glBlitFramebufferANGLE(0, 0, getWindowWidth() / 2, getWindowHeight(), getWindowWidth() / 2, 0, getWindowWidth(), getWindowHeight(),
515 GL_COLOR_BUFFER_BIT, GL_NEAREST);
516 EXPECT_GL_ERROR(GL_INVALID_OPERATION);
517}
518
519// blit from one region of the system fbo to another.
520TEST_F(BlitFramebufferANGLETest, blit_same_buffer_user)
521{
522 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
523
524 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
525
526 drawQuad(mCheckerProgram, "position", 0.3f);
527
528 EXPECT_GL_NO_ERROR();
529
530 glBlitFramebufferANGLE(0, 0, getWindowWidth() / 2, getWindowHeight(), getWindowWidth() / 2, 0, getWindowWidth(), getWindowHeight(),
531 GL_COLOR_BUFFER_BIT, GL_NEAREST);
532 EXPECT_GL_ERROR(GL_INVALID_OPERATION);
533}
534
535TEST_F(BlitFramebufferANGLETest, blit_partial_color)
536{
537 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
538
539 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
540
541 drawQuad(mCheckerProgram, "position", 0.5f);
542
543 EXPECT_GL_NO_ERROR();
544
545 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
546 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
547
548 glClearColor(1.0, 1.0, 1.0, 1.0);
549 glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
550
551 glBlitFramebufferANGLE(0, 0, getWindowWidth() / 2, getWindowHeight() / 2, 0, getWindowHeight() / 2, getWindowWidth() / 2, getWindowHeight(),
552 GL_COLOR_BUFFER_BIT, GL_NEAREST);
553
554 EXPECT_GL_NO_ERROR();
555
556 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
557
558 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 255, 255, 255);
559 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 255, 255, 255, 255);
560 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 255, 255, 255);
561 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
562}
563
564TEST_F(BlitFramebufferANGLETest, blit_different_sizes)
565{
566 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
567
568 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
569
570 drawQuad(mCheckerProgram, "position", 0.5f);
571
572 EXPECT_GL_NO_ERROR();
573
574 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mSmallFBO);
575 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
576
577 glClearColor(1.0, 1.0, 1.0, 1.0);
578 glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
579
580 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
581 GL_COLOR_BUFFER_BIT, GL_NEAREST);
582
583 EXPECT_GL_NO_ERROR();
584
585 glBindFramebuffer(GL_FRAMEBUFFER, mSmallFBO);
586
587 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
588
589 EXPECT_GL_NO_ERROR();
590}
591
592TEST_F(BlitFramebufferANGLETest, blit_with_missing_attachments)
593{
594 glBindFramebuffer(GL_FRAMEBUFFER, mColorOnlyFBO);
595
596 glClear(GL_COLOR_BUFFER_BIT);
597 drawQuad(mCheckerProgram, "position", 0.3f);
598
599 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
600 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mColorOnlyFBO);
601
602 glClearColor(1.0, 1.0, 1.0, 1.0);
603 glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
604
605 // depth blit request should be silently ignored, because the read FBO has no depth attachment
606 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
607 GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, GL_NEAREST);
608
609 EXPECT_GL_NO_ERROR();
610
611 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
612
613 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
614 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
615 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
616 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
617
618 // unlike in the depth blit tests, this *should* draw a blue quad, because depth info
619 // has not been copied
620 glEnable(GL_DEPTH_TEST);
621 drawQuad(mBlueProgram, "position", 0.8f);
622 glDisable(GL_DEPTH_TEST);
623
624 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255);
625 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255);
626 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 0, 255, 255);
627 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 0, 255, 255);
628}
629
630TEST_F(BlitFramebufferANGLETest, blit_stencil)
631{
632 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
633
634 glClear(GL_COLOR_BUFFER_BIT);
635 // fill the stencil buffer with 0x1
636 glStencilFunc(GL_ALWAYS, 0x1, 0xFF);
637 glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
638 glEnable(GL_STENCIL_TEST);
639 drawQuad(mCheckerProgram, "position", 0.3f);
640
641 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
642 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
643
644 glClearColor(1.0, 1.0, 1.0, 1.0);
645 glClearStencil(0x0);
646 glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
647
648 // depth blit request should be silently ignored, because the read FBO has no depth attachment
649 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
650 GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT, GL_NEAREST);
651
652 EXPECT_GL_NO_ERROR();
653
654 glBindFramebuffer(GL_FRAMEBUFFER, mOriginalFBO);
655
656 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
657 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
658 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
659 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
660
661 glStencilFunc(GL_EQUAL, 0x1, 0xFF); // only pass if stencil buffer at pixel reads 0x1
662 drawQuad(mBlueProgram, "position", 0.8f); // blue quad will draw if stencil buffer was copied
663 glDisable(GL_STENCIL_TEST);
664
665 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255);
666 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 0, 255, 255);
667 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 0, 255, 255);
668 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 0, 255, 255);
669}
670
671// make sure that attempting to blit a partial depth buffer issues an error
672TEST_F(BlitFramebufferANGLETest, blit_partial_depth_stencil)
673{
674 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
675
676 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
677
678 drawQuad(mCheckerProgram, "position", 0.5f);
679
680 EXPECT_GL_NO_ERROR();
681
682 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
683 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
684
685 glBlitFramebufferANGLE(0, 0, getWindowWidth() / 2, getWindowHeight() / 2, 0, 0,
686 getWindowWidth() / 2, getWindowHeight() / 2, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
687 EXPECT_GL_ERROR(GL_INVALID_OPERATION);
688}
689
690// Test blit with MRT framebuffers
691TEST_F(BlitFramebufferANGLETest, blit_mrt)
692{
693 if (!extensionEnabled("GL_EXT_draw_buffers"))
694 {
695 return;
696 }
697
698 GLenum drawBuffers[] = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT };
699
700 glBindFramebuffer(GL_FRAMEBUFFER, mMRTFBO);
701 glDrawBuffersEXT(2, drawBuffers);
702
703 glBindFramebuffer(GL_FRAMEBUFFER, mColorOnlyFBO);
704
705 glClear(GL_COLOR_BUFFER_BIT);
706
707 drawQuad(mCheckerProgram, "position", 0.8f);
708
709 EXPECT_GL_NO_ERROR();
710
711 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mColorOnlyFBO);
712 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mMRTFBO);
713
714 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
715 GL_COLOR_BUFFER_BIT, GL_NEAREST);
716
717 EXPECT_GL_NO_ERROR();
718
719 glBindFramebuffer(GL_FRAMEBUFFER, mMRTFBO);
720
721 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
722 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
723 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
724 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
725
726 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_2D, 0, 0);
727 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mMRTColorBuffer0, 0);
728
729 EXPECT_PIXEL_EQ( getWindowWidth() / 4, getWindowHeight() / 4, 255, 0, 0, 255);
730 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, getWindowHeight() / 4, 0, 255, 0, 255);
731 EXPECT_PIXEL_EQ(3 * getWindowWidth() / 4, 3 * getWindowHeight() / 4, 255, 0, 0, 255);
732 EXPECT_PIXEL_EQ( getWindowWidth() / 4, 3 * getWindowHeight() / 4, 0, 255, 0, 255);
733
734 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mMRTColorBuffer0, 0);
735 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_2D, mMRTColorBuffer1, 0);
736}
737
738// Make sure that attempts to stretch in a blit call issue an error
739TEST_F(BlitFramebufferANGLETest, error_stretching)
740{
741 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
742
743 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
744
745 drawQuad(mCheckerProgram, "position", 0.5f);
746
747 EXPECT_GL_NO_ERROR();
748
749 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
750 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
751
752 glBlitFramebufferANGLE(0, 0, getWindowWidth() / 2, getWindowHeight() / 2, 0, 0,
753 getWindowWidth(), getWindowHeight(), GL_COLOR_BUFFER_BIT, GL_NEAREST);
754 EXPECT_GL_ERROR(GL_INVALID_OPERATION);
755}
756
757// Make sure that attempts to flip in a blit call issue an error
758TEST_F(BlitFramebufferANGLETest, error_flipping)
759{
760 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
761
762 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
763
764 drawQuad(mCheckerProgram, "position", 0.5f);
765
766 EXPECT_GL_NO_ERROR();
767
768 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
769 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
770
771 glBlitFramebufferANGLE(0, 0, getWindowWidth() / 2, getWindowHeight() / 2, getWindowWidth() / 2, getWindowHeight() / 2,
772 0, 0, GL_COLOR_BUFFER_BIT, GL_NEAREST);
773 EXPECT_GL_ERROR(GL_INVALID_OPERATION);
774}
775
776TEST_F(BlitFramebufferANGLETest, errors)
777{
778 glBindFramebuffer(GL_FRAMEBUFFER, mUserFBO);
779
780 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
781
782 drawQuad(mCheckerProgram, "position", 0.5f);
783
784 EXPECT_GL_NO_ERROR();
785
786 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mOriginalFBO);
787 glBindFramebuffer(GL_READ_FRAMEBUFFER_ANGLE, mUserFBO);
788
789 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
790 GL_COLOR_BUFFER_BIT, GL_LINEAR);
791 EXPECT_GL_ERROR(GL_INVALID_ENUM);
792
793 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
794 GL_COLOR_BUFFER_BIT | 234, GL_NEAREST);
795 EXPECT_GL_ERROR(GL_INVALID_VALUE);
796
797 glBindFramebuffer(GL_DRAW_FRAMEBUFFER_ANGLE, mDiffFormatFBO);
798
799 glBlitFramebufferANGLE(0, 0, getWindowWidth(), getWindowHeight(), 0, 0, getWindowWidth(), getWindowHeight(),
800 GL_COLOR_BUFFER_BIT, GL_NEAREST);
801 EXPECT_GL_ERROR(GL_INVALID_OPERATION);
802}