1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program OpenGL ES 2.0 Module
3 * -------------------------------------------------
4 *
5 * Copyright 2014 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 *//*!
20 * \file
21 * \brief Mipmapping accuracy tests.
22 *//*--------------------------------------------------------------------*/
23
24 #include "es2aTextureMipmapTests.hpp"
25 #include "glsTextureTestUtil.hpp"
26 #include "gluTexture.hpp"
27 #include "gluStrUtil.hpp"
28 #include "gluTextureUtil.hpp"
29 #include "gluPixelTransfer.hpp"
30 #include "tcuTestLog.hpp"
31 #include "tcuTextureUtil.hpp"
32 #include "tcuVector.hpp"
33 #include "tcuMatrix.hpp"
34 #include "tcuMatrixUtil.hpp"
35 #include "deStringUtil.hpp"
36 #include "deRandom.hpp"
37
38 #include "glwEnums.hpp"
39 #include "glwFunctions.hpp"
40
41 namespace deqp
42 {
43 namespace gles2
44 {
45 namespace Accuracy
46 {
47
48 using tcu::TestLog;
49 using std::vector;
50 using std::string;
51 using tcu::Sampler;
52 using tcu::Vec2;
53 using tcu::Mat2;
54 using tcu::Vec4;
55 using tcu::IVec2;
56 using tcu::IVec4;
57 using namespace glu;
58 using namespace gls::TextureTestUtil;
59
60 enum CoordType
61 {
62 COORDTYPE_BASIC, //!< texCoord = translateScale(position).
63 COORDTYPE_BASIC_BIAS, //!< Like basic, but with bias values.
64 COORDTYPE_AFFINE, //!< texCoord = translateScaleRotateShear(position).
65 COORDTYPE_PROJECTED, //!< Projected coordinates, w != 1
66
67 COORDTYPE_LAST
68 };
69
70 // Texture2DMipmapCase
71
72 class Texture2DMipmapCase : public tcu::TestCase
73 {
74 public:
75
76 Texture2DMipmapCase (tcu::TestContext& testCtx,
77 glu::RenderContext& renderCtx,
78 const glu::ContextInfo& renderCtxInfo,
79 const char* name,
80 const char* desc,
81 CoordType coordType,
82 deUint32 minFilter,
83 deUint32 wrapS,
84 deUint32 wrapT,
85 deUint32 format,
86 deUint32 dataType,
87 int width,
88 int height);
89 ~Texture2DMipmapCase (void);
90
91 void init (void);
92 void deinit (void);
93 IterateResult iterate (void);
94
95 private:
96 Texture2DMipmapCase (const Texture2DMipmapCase& other);
97 Texture2DMipmapCase& operator= (const Texture2DMipmapCase& other);
98
99 glu::RenderContext& m_renderCtx;
100 const glu::ContextInfo& m_renderCtxInfo;
101
102 CoordType m_coordType;
103 deUint32 m_minFilter;
104 deUint32 m_wrapS;
105 deUint32 m_wrapT;
106 deUint32 m_format;
107 deUint32 m_dataType;
108 int m_width;
109 int m_height;
110
111 glu::Texture2D* m_texture;
112 TextureRenderer m_renderer;
113 };
114
Texture2DMipmapCase(tcu::TestContext & testCtx,glu::RenderContext & renderCtx,const glu::ContextInfo & renderCtxInfo,const char * name,const char * desc,CoordType coordType,deUint32 minFilter,deUint32 wrapS,deUint32 wrapT,deUint32 format,deUint32 dataType,int width,int height)115 Texture2DMipmapCase::Texture2DMipmapCase (tcu::TestContext& testCtx,
116 glu::RenderContext& renderCtx,
117 const glu::ContextInfo& renderCtxInfo,
118 const char* name,
119 const char* desc,
120 CoordType coordType,
121 deUint32 minFilter,
122 deUint32 wrapS,
123 deUint32 wrapT,
124 deUint32 format,
125 deUint32 dataType,
126 int width,
127 int height)
128 : TestCase (testCtx, tcu::NODETYPE_ACCURACY, name, desc)
129 , m_renderCtx (renderCtx)
130 , m_renderCtxInfo (renderCtxInfo)
131 , m_coordType (coordType)
132 , m_minFilter (minFilter)
133 , m_wrapS (wrapS)
134 , m_wrapT (wrapT)
135 , m_format (format)
136 , m_dataType (dataType)
137 , m_width (width)
138 , m_height (height)
139 , m_texture (DE_NULL)
140 , m_renderer (renderCtx, testCtx, glu::GLSL_VERSION_100_ES,
141 renderCtxInfo.isFragmentHighPrecisionSupported() ? glu::PRECISION_HIGHP // Use highp if available.
142 : glu::PRECISION_MEDIUMP)
143 {
144 }
145
~Texture2DMipmapCase(void)146 Texture2DMipmapCase::~Texture2DMipmapCase (void)
147 {
148 deinit();
149 }
150
init(void)151 void Texture2DMipmapCase::init (void)
152 {
153 if (!m_renderCtxInfo.isFragmentHighPrecisionSupported())
154 m_testCtx.getLog() << TestLog::Message << "Warning: High precision not supported in fragment shaders." << TestLog::EndMessage;
155
156 m_texture = new Texture2D(m_renderCtx, m_format, m_dataType, m_width, m_height);
157
158 int numLevels = deLog2Floor32(de::max(m_width, m_height))+1;
159
160 // Fill texture with colored grid.
161 for (int levelNdx = 0; levelNdx < numLevels; levelNdx++)
162 {
163 deUint32 step = 0xff / (numLevels-1);
164 deUint32 inc = deClamp32(step*levelNdx, 0x00, 0xff);
165 deUint32 dec = 0xff - inc;
166 deUint32 rgb = (inc << 16) | (dec << 8) | 0xff;
167 deUint32 color = 0xff000000 | rgb;
168
169 m_texture->getRefTexture().allocLevel(levelNdx);
170 tcu::clear(m_texture->getRefTexture().getLevel(levelNdx), toVec4(tcu::RGBA(color)));
171 }
172 }
173
deinit(void)174 void Texture2DMipmapCase::deinit (void)
175 {
176 delete m_texture;
177 m_texture = DE_NULL;
178
179 m_renderer.clear();
180 }
181
getBasicTexCoord2D(std::vector<float> & dst,int cellNdx)182 static void getBasicTexCoord2D (std::vector<float>& dst, int cellNdx)
183 {
184 static const struct
185 {
186 Vec2 bottomLeft;
187 Vec2 topRight;
188 } s_basicCoords[] =
189 {
190 { Vec2(-0.1f, 0.1f), Vec2( 0.8f, 1.0f) },
191 { Vec2(-0.3f, -0.6f), Vec2( 0.7f, 0.4f) },
192 { Vec2(-0.3f, 0.6f), Vec2( 0.7f, -0.9f) },
193 { Vec2(-0.8f, 0.6f), Vec2( 0.7f, -0.9f) },
194
195 { Vec2(-0.5f, -0.5f), Vec2( 1.5f, 1.5f) },
196 { Vec2( 1.0f, -1.0f), Vec2(-1.3f, 1.0f) },
197 { Vec2( 1.2f, -1.0f), Vec2(-1.3f, 1.6f) },
198 { Vec2( 2.2f, -1.1f), Vec2(-1.3f, 0.8f) },
199
200 { Vec2(-1.5f, 1.6f), Vec2( 1.7f, -1.4f) },
201 { Vec2( 2.0f, 1.6f), Vec2( 2.3f, -1.4f) },
202 { Vec2( 1.3f, -2.6f), Vec2(-2.7f, 2.9f) },
203 { Vec2(-0.8f, -6.6f), Vec2( 6.0f, -0.9f) },
204
205 { Vec2( -8.0f, 9.0f), Vec2( 8.3f, -7.0f) },
206 { Vec2(-16.0f, 10.0f), Vec2( 18.3f, 24.0f) },
207 { Vec2( 30.2f, 55.0f), Vec2(-24.3f, -1.6f) },
208 { Vec2(-33.2f, 64.1f), Vec2( 32.1f, -64.1f) },
209 };
210
211 DE_ASSERT(de::inBounds(cellNdx, 0, DE_LENGTH_OF_ARRAY(s_basicCoords)));
212
213 const Vec2& bottomLeft = s_basicCoords[cellNdx].bottomLeft;
214 const Vec2& topRight = s_basicCoords[cellNdx].topRight;
215
216 computeQuadTexCoord2D(dst, bottomLeft, topRight);
217 }
218
getAffineTexCoord2D(std::vector<float> & dst,int cellNdx)219 static void getAffineTexCoord2D (std::vector<float>& dst, int cellNdx)
220 {
221 // Use basic coords as base.
222 getBasicTexCoord2D(dst, cellNdx);
223
224 // Rotate based on cell index.
225 float angle = 2.0f*DE_PI * ((float)cellNdx / 16.0f);
226 tcu::Mat2 rotMatrix = tcu::rotationMatrix(angle);
227
228 // Second and third row are sheared.
229 float shearX = de::inRange(cellNdx, 4, 11) ? (float)(15-cellNdx) / 16.0f : 0.0f;
230 tcu::Mat2 shearMatrix = tcu::shearMatrix(tcu::Vec2(shearX, 0.0f));
231
232 tcu::Mat2 transform = rotMatrix * shearMatrix;
233 Vec2 p0 = transform * Vec2(dst[0], dst[1]);
234 Vec2 p1 = transform * Vec2(dst[2], dst[3]);
235 Vec2 p2 = transform * Vec2(dst[4], dst[5]);
236 Vec2 p3 = transform * Vec2(dst[6], dst[7]);
237
238 dst[0] = p0.x(); dst[1] = p0.y();
239 dst[2] = p1.x(); dst[3] = p1.y();
240 dst[4] = p2.x(); dst[5] = p2.y();
241 dst[6] = p3.x(); dst[7] = p3.y();
242 }
243
iterate(void)244 Texture2DMipmapCase::IterateResult Texture2DMipmapCase::iterate (void)
245 {
246 // Constants.
247 const deUint32 magFilter = GL_NEAREST;
248
249 const glw::Functions& gl = m_renderCtx.getFunctions();
250 TestLog& log = m_testCtx.getLog();
251
252 const tcu::Texture2D& refTexture = m_texture->getRefTexture();
253 const tcu::TextureFormat& texFmt = refTexture.getFormat();
254 tcu::TextureFormatInfo fmtInfo = tcu::getTextureFormatInfo(texFmt);
255
256 int texWidth = refTexture.getWidth();
257 int texHeight = refTexture.getHeight();
258 int defViewportWidth = texWidth*4;
259 int defViewportHeight = texHeight*4;
260
261 RandomViewport viewport (m_renderCtx.getRenderTarget(), defViewportWidth, defViewportHeight, deStringHash(getName()));
262 ReferenceParams sampleParams (TEXTURETYPE_2D);
263 vector<float> texCoord;
264 bool isProjected = m_coordType == COORDTYPE_PROJECTED;
265 bool useLodBias = m_coordType == COORDTYPE_BASIC_BIAS;
266
267 tcu::Surface renderedFrame (viewport.width, viewport.height);
268
269 // Accuracy cases test against ideal lod computation.
270 tcu::Surface idealFrame (viewport.width, viewport.height);
271
272 // Viewport is divided into 4x4 grid.
273 int gridWidth = 4;
274 int gridHeight = 4;
275 int cellWidth = viewport.width / gridWidth;
276 int cellHeight = viewport.height / gridHeight;
277
278 // Accuracy measurements are off unless we get the expected viewport size.
279 if (viewport.width < defViewportWidth || viewport.height < defViewportHeight)
280 throw tcu::NotSupportedError("Too small viewport", "", __FILE__, __LINE__);
281
282 // Sampling parameters.
283 sampleParams.sampler = glu::mapGLSampler(m_wrapS, m_wrapT, m_minFilter, magFilter);
284 sampleParams.samplerType = gls::TextureTestUtil::getSamplerType(m_texture->getRefTexture().getFormat());
285 sampleParams.colorBias = fmtInfo.lookupBias;
286 sampleParams.colorScale = fmtInfo.lookupScale;
287 sampleParams.flags = (isProjected ? ReferenceParams::PROJECTED : 0) | (useLodBias ? ReferenceParams::USE_BIAS : 0);
288
289 // Upload texture data.
290 m_texture->upload();
291
292 // Use unit 0.
293 gl.activeTexture(GL_TEXTURE0);
294
295 // Bind gradient texture and setup sampler parameters.
296 gl.bindTexture(GL_TEXTURE_2D, m_texture->getGLTexture());
297 gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, m_wrapS);
298 gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, m_wrapT);
299 gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, m_minFilter);
300 gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
301
302 GLU_EXPECT_NO_ERROR(gl.getError(), "After texture setup");
303
304 // Bias values.
305 static const float s_bias[] = { 1.0f, -2.0f, 0.8f, -0.5f, 1.5f, 0.9f, 2.0f, 4.0f };
306
307 // Projection values.
308 static const Vec4 s_projections[] =
309 {
310 Vec4(1.2f, 1.0f, 0.7f, 1.0f),
311 Vec4(1.3f, 0.8f, 0.6f, 2.0f),
312 Vec4(0.8f, 1.0f, 1.7f, 0.6f),
313 Vec4(1.2f, 1.0f, 1.7f, 1.5f)
314 };
315
316 // Render cells.
317 for (int gridY = 0; gridY < gridHeight; gridY++)
318 {
319 for (int gridX = 0; gridX < gridWidth; gridX++)
320 {
321 int curX = cellWidth*gridX;
322 int curY = cellHeight*gridY;
323 int curW = gridX+1 == gridWidth ? (viewport.width-curX) : cellWidth;
324 int curH = gridY+1 == gridHeight ? (viewport.height-curY) : cellHeight;
325 int cellNdx = gridY*gridWidth + gridX;
326
327 // Compute texcoord.
328 switch (m_coordType)
329 {
330 case COORDTYPE_BASIC_BIAS: // Fall-through.
331 case COORDTYPE_PROJECTED:
332 case COORDTYPE_BASIC: getBasicTexCoord2D (texCoord, cellNdx); break;
333 case COORDTYPE_AFFINE: getAffineTexCoord2D (texCoord, cellNdx); break;
334 default: DE_ASSERT(DE_FALSE);
335 }
336
337 if (isProjected)
338 sampleParams.w = s_projections[cellNdx % DE_LENGTH_OF_ARRAY(s_projections)];
339
340 if (useLodBias)
341 sampleParams.bias = s_bias[cellNdx % DE_LENGTH_OF_ARRAY(s_bias)];
342
343 // Render with GL.
344 gl.viewport(viewport.x+curX, viewport.y+curY, curW, curH);
345 m_renderer.renderQuad(0, &texCoord[0], sampleParams);
346
347 // Render reference(s).
348 {
349 SurfaceAccess idealDst(idealFrame, m_renderCtx.getRenderTarget().getPixelFormat(), curX, curY, curW, curH);
350 sampleParams.lodMode = LODMODE_EXACT;
351 sampleTexture(idealDst, m_texture->getRefTexture(), &texCoord[0], sampleParams);
352 }
353 }
354 }
355
356 // Read result.
357 glu::readPixels(m_renderCtx, viewport.x, viewport.y, renderedFrame.getAccess());
358
359 // Compare and log.
360 {
361 const int bestScoreDiff = (texWidth/16)*(texHeight/16);
362 const int worstScoreDiff = texWidth*texHeight;
363
364 int score = measureAccuracy(log, idealFrame, renderedFrame, bestScoreDiff, worstScoreDiff);
365 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, de::toString(score).c_str());
366 }
367
368 return STOP;
369 }
370
371 // TextureCubeMipmapCase
372
373 class TextureCubeMipmapCase : public tcu::TestCase
374 {
375 public:
376
377 TextureCubeMipmapCase (tcu::TestContext& testCtx,
378 glu::RenderContext& renderCtx,
379 const glu::ContextInfo& renderCtxInfo,
380 const char* name,
381 const char* desc,
382 CoordType coordType,
383 deUint32 minFilter,
384 deUint32 wrapS,
385 deUint32 wrapT,
386 deUint32 format,
387 deUint32 dataType,
388 int size);
389 ~TextureCubeMipmapCase (void);
390
391 void init (void);
392 void deinit (void);
393 IterateResult iterate (void);
394
395 private:
396 TextureCubeMipmapCase (const TextureCubeMipmapCase& other);
397 TextureCubeMipmapCase& operator= (const TextureCubeMipmapCase& other);
398
399 glu::RenderContext& m_renderCtx;
400 const glu::ContextInfo& m_renderCtxInfo;
401
402 CoordType m_coordType;
403 deUint32 m_minFilter;
404 deUint32 m_wrapS;
405 deUint32 m_wrapT;
406 deUint32 m_format;
407 deUint32 m_dataType;
408 int m_size;
409
410 glu::TextureCube* m_texture;
411 TextureRenderer m_renderer;
412 };
413
TextureCubeMipmapCase(tcu::TestContext & testCtx,glu::RenderContext & renderCtx,const glu::ContextInfo & renderCtxInfo,const char * name,const char * desc,CoordType coordType,deUint32 minFilter,deUint32 wrapS,deUint32 wrapT,deUint32 format,deUint32 dataType,int size)414 TextureCubeMipmapCase::TextureCubeMipmapCase (tcu::TestContext& testCtx,
415 glu::RenderContext& renderCtx,
416 const glu::ContextInfo& renderCtxInfo,
417 const char* name,
418 const char* desc,
419 CoordType coordType,
420 deUint32 minFilter,
421 deUint32 wrapS,
422 deUint32 wrapT,
423 deUint32 format,
424 deUint32 dataType,
425 int size)
426 : TestCase (testCtx, tcu::NODETYPE_ACCURACY, name, desc)
427 , m_renderCtx (renderCtx)
428 , m_renderCtxInfo (renderCtxInfo)
429 , m_coordType (coordType)
430 , m_minFilter (minFilter)
431 , m_wrapS (wrapS)
432 , m_wrapT (wrapT)
433 , m_format (format)
434 , m_dataType (dataType)
435 , m_size (size)
436 , m_texture (DE_NULL)
437 , m_renderer (renderCtx, testCtx, glu::GLSL_VERSION_100_ES,
438 renderCtxInfo.isFragmentHighPrecisionSupported() ? glu::PRECISION_HIGHP // Use highp if available.
439 : glu::PRECISION_MEDIUMP)
440 {
441 }
442
~TextureCubeMipmapCase(void)443 TextureCubeMipmapCase::~TextureCubeMipmapCase (void)
444 {
445 deinit();
446 }
447
init(void)448 void TextureCubeMipmapCase::init (void)
449 {
450 if (!m_renderCtxInfo.isFragmentHighPrecisionSupported())
451 m_testCtx.getLog() << TestLog::Message << "Warning: High precision not supported in fragment shaders." << TestLog::EndMessage;
452
453 m_texture = new TextureCube(m_renderCtx, m_format, m_dataType, m_size);
454
455 int numLevels = deLog2Floor32(m_size)+1;
456
457 // Fill texture with colored grid.
458 for (int faceNdx = 0; faceNdx < tcu::CUBEFACE_LAST; faceNdx++)
459 {
460 for (int levelNdx = 0; levelNdx < numLevels; levelNdx++)
461 {
462 deUint32 step = 0xff / (numLevels-1);
463 deUint32 inc = deClamp32(step*levelNdx, 0x00, 0xff);
464 deUint32 dec = 0xff - inc;
465 deUint32 rgb = 0;
466
467 switch (faceNdx)
468 {
469 case 0: rgb = (inc << 16) | (dec << 8) | 255; break;
470 case 1: rgb = (255 << 16) | (inc << 8) | dec; break;
471 case 2: rgb = (dec << 16) | (255 << 8) | inc; break;
472 case 3: rgb = (dec << 16) | (inc << 8) | 255; break;
473 case 4: rgb = (255 << 16) | (dec << 8) | inc; break;
474 case 5: rgb = (inc << 16) | (255 << 8) | dec; break;
475 }
476
477 deUint32 color = 0xff000000 | rgb;
478
479 m_texture->getRefTexture().allocLevel((tcu::CubeFace)faceNdx, levelNdx);
480 tcu::clear(m_texture->getRefTexture().getLevelFace(levelNdx, (tcu::CubeFace)faceNdx), toVec4(tcu::RGBA(color)));
481 }
482 }
483 }
484
deinit(void)485 void TextureCubeMipmapCase::deinit (void)
486 {
487 delete m_texture;
488 m_texture = DE_NULL;
489
490 m_renderer.clear();
491 }
492
randomPartition(vector<IVec4> & dst,de::Random & rnd,int x,int y,int width,int height)493 static void randomPartition (vector<IVec4>& dst, de::Random& rnd, int x, int y, int width, int height)
494 {
495 const int minWidth = 8;
496 const int minHeight = 8;
497
498 bool partition = rnd.getFloat() > 0.4f;
499 bool partitionX = partition && width > minWidth && rnd.getBool();
500 bool partitionY = partition && height > minHeight && !partitionX;
501
502 if (partitionX)
503 {
504 int split = width/2 + rnd.getInt(-width/4, +width/4);
505 randomPartition(dst, rnd, x, y, split, height);
506 randomPartition(dst, rnd, x+split, y, width-split, height);
507 }
508 else if (partitionY)
509 {
510 int split = height/2 + rnd.getInt(-height/4, +height/4);
511 randomPartition(dst, rnd, x, y, width, split);
512 randomPartition(dst, rnd, x, y+split, width, height-split);
513 }
514 else
515 dst.push_back(IVec4(x, y, width, height));
516 }
517
computeGridLayout(vector<IVec4> & dst,int width,int height)518 static void computeGridLayout (vector<IVec4>& dst, int width, int height)
519 {
520 de::Random rnd(7);
521 randomPartition(dst, rnd, 0, 0, width, height);
522 }
523
iterate(void)524 TextureCubeMipmapCase::IterateResult TextureCubeMipmapCase::iterate (void)
525 {
526 // Constants.
527 const deUint32 magFilter = GL_NEAREST;
528
529 int texWidth = m_texture->getRefTexture().getSize();
530 int texHeight = m_texture->getRefTexture().getSize();
531
532 int defViewportWidth = texWidth*2;
533 int defViewportHeight = texHeight*2;
534
535 const glw::Functions& gl = m_renderCtx.getFunctions();
536 TestLog& log = m_testCtx.getLog();
537 RandomViewport viewport (m_renderCtx.getRenderTarget(), defViewportWidth, defViewportHeight, deStringHash(getName()));
538 tcu::Sampler sampler = mapGLSampler(m_wrapS, m_wrapT, m_minFilter, magFilter);
539
540 vector<float> texCoord;
541
542 bool isProjected = m_coordType == COORDTYPE_PROJECTED;
543 bool useLodBias = m_coordType == COORDTYPE_BASIC_BIAS;
544
545 tcu::Surface renderedFrame (viewport.width, viewport.height);
546
547 // Accuracy cases test against ideal lod computation.
548 tcu::Surface idealFrame (viewport.width, viewport.height);
549
550 // Accuracy measurements are off unless we get the expected viewport size.
551 if (viewport.width < defViewportWidth || viewport.height < defViewportHeight)
552 throw tcu::NotSupportedError("Too small viewport", "", __FILE__, __LINE__);
553
554 // Upload texture data.
555 m_texture->upload();
556
557 // Use unit 0.
558 gl.activeTexture(GL_TEXTURE0);
559
560 // Bind gradient texture and setup sampler parameters.
561 gl.bindTexture(GL_TEXTURE_CUBE_MAP, m_texture->getGLTexture());
562 gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, m_wrapS);
563 gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, m_wrapT);
564 gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, m_minFilter);
565 gl.texParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, magFilter);
566
567 GLU_EXPECT_NO_ERROR(gl.getError(), "After texture setup");
568
569 // Compute grid.
570 vector<IVec4> gridLayout;
571 computeGridLayout(gridLayout, viewport.width, viewport.height);
572
573 // Bias values.
574 static const float s_bias[] = { 1.0f, -2.0f, 0.8f, -0.5f, 1.5f, 0.9f, 2.0f, 4.0f };
575
576 // Projection values \note Less agressive than in 2D case due to smaller quads.
577 static const Vec4 s_projections[] =
578 {
579 Vec4(1.2f, 1.0f, 0.7f, 1.0f),
580 Vec4(1.3f, 0.8f, 0.6f, 1.1f),
581 Vec4(0.8f, 1.0f, 1.2f, 0.8f),
582 Vec4(1.2f, 1.0f, 1.3f, 0.9f)
583 };
584
585 for (int cellNdx = 0; cellNdx < (int)gridLayout.size(); cellNdx++)
586 {
587 int curX = gridLayout[cellNdx].x();
588 int curY = gridLayout[cellNdx].y();
589 int curW = gridLayout[cellNdx].z();
590 int curH = gridLayout[cellNdx].w();
591 tcu::CubeFace cubeFace = (tcu::CubeFace)(cellNdx % tcu::CUBEFACE_LAST);
592 ReferenceParams params (TEXTURETYPE_CUBE);
593
594 params.sampler = sampler;
595
596 DE_ASSERT(m_coordType != COORDTYPE_AFFINE); // Not supported.
597 computeQuadTexCoordCube(texCoord, cubeFace);
598
599 if (isProjected)
600 {
601 params.flags |= ReferenceParams::PROJECTED;
602 params.w = s_projections[cellNdx % DE_LENGTH_OF_ARRAY(s_projections)];
603 }
604
605 if (useLodBias)
606 {
607 params.flags |= ReferenceParams::USE_BIAS;
608 params.bias = s_bias[cellNdx % DE_LENGTH_OF_ARRAY(s_bias)];
609 }
610
611 // Render with GL.
612 gl.viewport(viewport.x+curX, viewport.y+curY, curW, curH);
613 m_renderer.renderQuad(0, &texCoord[0], params);
614
615 // Render reference(s).
616 {
617 SurfaceAccess idealDst(idealFrame, m_renderCtx.getRenderTarget().getPixelFormat(), curX, curY, curW, curH);
618 params.lodMode = LODMODE_EXACT;
619 sampleTexture(idealDst, m_texture->getRefTexture(), &texCoord[0], params);
620 }
621 }
622
623 // Read result.
624 glu::readPixels(m_renderCtx, viewport.x, viewport.y, renderedFrame.getAccess());
625
626 // Compare and log.
627 {
628 const int bestScoreDiff = (texWidth/16)*(texHeight/16);
629 const int worstScoreDiff = texWidth*texHeight;
630
631 int score = measureAccuracy(log, idealFrame, renderedFrame, bestScoreDiff, worstScoreDiff);
632 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, de::toString(score).c_str());
633 }
634
635 return STOP;
636 }
637
TextureMipmapTests(Context & context)638 TextureMipmapTests::TextureMipmapTests (Context& context)
639 : TestCaseGroup(context, "mipmap", "Mipmapping accuracy tests")
640 {
641 }
642
~TextureMipmapTests(void)643 TextureMipmapTests::~TextureMipmapTests (void)
644 {
645 }
646
init(void)647 void TextureMipmapTests::init (void)
648 {
649 tcu::TestCaseGroup* group2D = new tcu::TestCaseGroup(m_testCtx, "2d", "2D Texture Mipmapping");
650 tcu::TestCaseGroup* groupCube = new tcu::TestCaseGroup(m_testCtx, "cube", "Cube Map Filtering");
651 addChild(group2D);
652 addChild(groupCube);
653
654 static const struct
655 {
656 const char* name;
657 deUint32 mode;
658 } wrapModes[] =
659 {
660 { "clamp", GL_CLAMP_TO_EDGE },
661 { "repeat", GL_REPEAT },
662 { "mirror", GL_MIRRORED_REPEAT }
663 };
664
665 static const struct
666 {
667 const char* name;
668 deUint32 mode;
669 } minFilterModes[] =
670 {
671 { "nearest_nearest", GL_NEAREST_MIPMAP_NEAREST },
672 { "linear_nearest", GL_LINEAR_MIPMAP_NEAREST },
673 { "nearest_linear", GL_NEAREST_MIPMAP_LINEAR },
674 { "linear_linear", GL_LINEAR_MIPMAP_LINEAR }
675 };
676
677 static const struct
678 {
679 CoordType type;
680 const char* name;
681 const char* desc;
682 } coordTypes[] =
683 {
684 { COORDTYPE_BASIC, "basic", "Mipmapping with translated and scaled coordinates" },
685 { COORDTYPE_AFFINE, "affine", "Mipmapping with affine coordinate transform" },
686 { COORDTYPE_PROJECTED, "projected", "Mipmapping with perspective projection" }
687 };
688
689 const int tex2DWidth = 64;
690 const int tex2DHeight = 64;
691
692 // 2D cases.
693 for (int coordType = 0; coordType < DE_LENGTH_OF_ARRAY(coordTypes); coordType++)
694 {
695 tcu::TestCaseGroup* coordTypeGroup = new tcu::TestCaseGroup(m_testCtx, coordTypes[coordType].name, coordTypes[coordType].desc);
696 group2D->addChild(coordTypeGroup);
697
698 for (int minFilter = 0; minFilter < DE_LENGTH_OF_ARRAY(minFilterModes); minFilter++)
699 {
700 for (int wrapMode = 0; wrapMode < DE_LENGTH_OF_ARRAY(wrapModes); wrapMode++)
701 {
702 std::ostringstream name;
703 name << minFilterModes[minFilter].name
704 << "_" << wrapModes[wrapMode].name;
705
706 coordTypeGroup->addChild(new Texture2DMipmapCase(m_testCtx, m_context.getRenderContext(), m_context.getContextInfo(),
707 name.str().c_str(), "",
708 coordTypes[coordType].type,
709 minFilterModes[minFilter].mode,
710 wrapModes[wrapMode].mode,
711 wrapModes[wrapMode].mode,
712 GL_RGBA, GL_UNSIGNED_BYTE,
713 tex2DWidth, tex2DHeight));
714 }
715 }
716 }
717
718 const int cubeMapSize = 64;
719
720 static const struct
721 {
722 CoordType type;
723 const char* name;
724 const char* desc;
725 } cubeCoordTypes[] =
726 {
727 { COORDTYPE_BASIC, "basic", "Mipmapping with translated and scaled coordinates" },
728 { COORDTYPE_PROJECTED, "projected", "Mipmapping with perspective projection" }
729 };
730
731 // Cubemap cases.
732 for (int coordType = 0; coordType < DE_LENGTH_OF_ARRAY(cubeCoordTypes); coordType++)
733 {
734 tcu::TestCaseGroup* coordTypeGroup = new tcu::TestCaseGroup(m_testCtx, cubeCoordTypes[coordType].name, cubeCoordTypes[coordType].desc);
735 groupCube->addChild(coordTypeGroup);
736
737 for (int minFilter = 0; minFilter < DE_LENGTH_OF_ARRAY(minFilterModes); minFilter++)
738 {
739 coordTypeGroup->addChild(new TextureCubeMipmapCase(m_testCtx, m_context.getRenderContext(), m_context.getContextInfo(),
740 minFilterModes[minFilter].name, "",
741 cubeCoordTypes[coordType].type,
742 minFilterModes[minFilter].mode,
743 GL_CLAMP_TO_EDGE,
744 GL_CLAMP_TO_EDGE,
745 GL_RGBA, GL_UNSIGNED_BYTE, cubeMapSize));
746 }
747 }
748 }
749
750 } // Accuracy
751 } // gles2
752 } // deqp
753