1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program Tester Core
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 Image comparison utilities.
22 *//*--------------------------------------------------------------------*/
23
24 #include "tcuImageCompare.hpp"
25 #include "tcuSurface.hpp"
26 #include "tcuFuzzyImageCompare.hpp"
27 #include "tcuBilinearImageCompare.hpp"
28 #include "tcuTestLog.hpp"
29 #include "tcuVector.hpp"
30 #include "tcuVectorUtil.hpp"
31 #include "tcuRGBA.hpp"
32 #include "tcuTexture.hpp"
33 #include "tcuTextureUtil.hpp"
34 #include "tcuFloat.hpp"
35
36 #include <string.h>
37
38 namespace tcu
39 {
40
41 namespace
42 {
43
computeScaleAndBias(const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,tcu::Vec4 & scale,tcu::Vec4 & bias)44 void computeScaleAndBias (const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, tcu::Vec4& scale, tcu::Vec4& bias)
45 {
46 Vec4 minVal;
47 Vec4 maxVal;
48 const float eps = 0.0001f;
49
50 {
51 Vec4 refMin;
52 Vec4 refMax;
53 estimatePixelValueRange(reference, refMin, refMax);
54
55 minVal = refMin;
56 maxVal = refMax;
57 }
58
59 {
60 Vec4 resMin;
61 Vec4 resMax;
62
63 estimatePixelValueRange(result, resMin, resMax);
64
65 minVal[0] = de::min(minVal[0], resMin[0]);
66 minVal[1] = de::min(minVal[1], resMin[1]);
67 minVal[2] = de::min(minVal[2], resMin[2]);
68 minVal[3] = de::min(minVal[3], resMin[3]);
69
70 maxVal[0] = de::max(maxVal[0], resMax[0]);
71 maxVal[1] = de::max(maxVal[1], resMax[1]);
72 maxVal[2] = de::max(maxVal[2], resMax[2]);
73 maxVal[3] = de::max(maxVal[3], resMax[3]);
74 }
75
76 for (int c = 0; c < 4; c++)
77 {
78 if (maxVal[c] - minVal[c] < eps)
79 {
80 scale[c] = (maxVal[c] < eps) ? 1.0f : (1.0f / maxVal[c]);
81 bias[c] = (c == 3) ? (1.0f - maxVal[c]*scale[c]) : (0.0f - minVal[c]*scale[c]);
82 }
83 else
84 {
85 scale[c] = 1.0f / (maxVal[c] - minVal[c]);
86 bias[c] = 0.0f - minVal[c]*scale[c];
87 }
88 }
89 }
90
findNumPositionDeviationFailingPixels(const PixelBufferAccess & errorMask,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const UVec4 & threshold,const tcu::IVec3 & maxPositionDeviation,bool acceptOutOfBoundsAsAnyValue)91 static int findNumPositionDeviationFailingPixels (const PixelBufferAccess& errorMask, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const UVec4& threshold, const tcu::IVec3& maxPositionDeviation, bool acceptOutOfBoundsAsAnyValue)
92 {
93 const tcu::IVec4 okColor (0, 255, 0, 255);
94 const tcu::IVec4 errorColor (255, 0, 0, 255);
95 const int width = reference.getWidth();
96 const int height = reference.getHeight();
97 const int depth = reference.getDepth();
98 int numFailingPixels = 0;
99
100 // Accept pixels "sampling" over the image bounds pixels since "taps" could be anything
101 const int beginX = (acceptOutOfBoundsAsAnyValue) ? (maxPositionDeviation.x()) : (0);
102 const int beginY = (acceptOutOfBoundsAsAnyValue) ? (maxPositionDeviation.y()) : (0);
103 const int beginZ = (acceptOutOfBoundsAsAnyValue) ? (maxPositionDeviation.z()) : (0);
104 const int endX = (acceptOutOfBoundsAsAnyValue) ? (width - maxPositionDeviation.x()) : (0);
105 const int endY = (acceptOutOfBoundsAsAnyValue) ? (height - maxPositionDeviation.y()) : (0);
106 const int endZ = (acceptOutOfBoundsAsAnyValue) ? (depth - maxPositionDeviation.z()) : (0);
107
108 TCU_CHECK_INTERNAL(result.getWidth() == width && result.getHeight() == height && result.getDepth() == depth);
109
110 tcu::clear(errorMask, okColor);
111
112 for (int z = beginZ; z < endZ; z++)
113 {
114 for (int y = beginY; y < endY; y++)
115 {
116 for (int x = beginX; x < endX; x++)
117 {
118 const IVec4 refPix = reference.getPixelInt(x, y, z);
119 const IVec4 cmpPix = result.getPixelInt(x, y, z);
120
121 // Exact match
122 {
123 const UVec4 diff = abs(refPix - cmpPix).cast<deUint32>();
124 const bool isOk = boolAll(lessThanEqual(diff, threshold));
125
126 if (isOk)
127 continue;
128 }
129
130 // Find matching pixels for both result and reference pixel
131
132 {
133 bool pixelFoundForReference = false;
134
135 // Find deviated result pixel for reference
136
137 for (int sz = de::max(0, z - maxPositionDeviation.z()); sz <= de::min(depth - 1, z + maxPositionDeviation.z()) && !pixelFoundForReference; ++sz)
138 for (int sy = de::max(0, y - maxPositionDeviation.y()); sy <= de::min(height - 1, y + maxPositionDeviation.y()) && !pixelFoundForReference; ++sy)
139 for (int sx = de::max(0, x - maxPositionDeviation.x()); sx <= de::min(width - 1, x + maxPositionDeviation.x()) && !pixelFoundForReference; ++sx)
140 {
141 const IVec4 deviatedCmpPix = result.getPixelInt(sx, sy, sz);
142 const UVec4 diff = abs(refPix - deviatedCmpPix).cast<deUint32>();
143 const bool isOk = boolAll(lessThanEqual(diff, threshold));
144
145 pixelFoundForReference = isOk;
146 }
147
148 if (!pixelFoundForReference)
149 {
150 errorMask.setPixel(errorColor, x, y, z);
151 ++numFailingPixels;
152 continue;
153 }
154 }
155 {
156 bool pixelFoundForResult = false;
157
158 // Find deviated reference pixel for result
159
160 for (int sz = de::max(0, z - maxPositionDeviation.z()); sz <= de::min(depth - 1, z + maxPositionDeviation.z()) && !pixelFoundForResult; ++sz)
161 for (int sy = de::max(0, y - maxPositionDeviation.y()); sy <= de::min(height - 1, y + maxPositionDeviation.y()) && !pixelFoundForResult; ++sy)
162 for (int sx = de::max(0, x - maxPositionDeviation.x()); sx <= de::min(width - 1, x + maxPositionDeviation.x()) && !pixelFoundForResult; ++sx)
163 {
164 const IVec4 deviatedRefPix = reference.getPixelInt(sx, sy, sz);
165 const UVec4 diff = abs(cmpPix - deviatedRefPix).cast<deUint32>();
166 const bool isOk = boolAll(lessThanEqual(diff, threshold));
167
168 pixelFoundForResult = isOk;
169 }
170
171 if (!pixelFoundForResult)
172 {
173 errorMask.setPixel(errorColor, x, y, z);
174 ++numFailingPixels;
175 continue;
176 }
177 }
178 }
179 }
180 }
181
182 return numFailingPixels;
183 }
184
185 } // anonymous
186
187 /*--------------------------------------------------------------------*//*!
188 * \brief Fuzzy image comparison
189 *
190 * This image comparison is designed for comparing images rendered by 3D
191 * graphics APIs such as OpenGL. The comparison allows small local differences
192 * and compensates for aliasing.
193 *
194 * The algorithm first performs light blurring on both images and then
195 * does per-pixel analysis. Pixels are compared to 3x3 bilinear surface
196 * defined by adjecent pixels. This compensates for both 1-pixel deviations
197 * in geometry and aliasing in texture data.
198 *
199 * Error metric is computed based on the differences. On valid images the
200 * metric is usually <0.01. Thus good threshold values are in range 0.02 to
201 * 0.05.
202 *
203 * On failure error image is generated that shows where the failing pixels
204 * are.
205 *
206 * \note Currently supports only UNORM_INT8 formats
207 * \param log Test log for results
208 * \param imageSetName Name for image set when logging results
209 * \param imageSetDesc Description for image set
210 * \param reference Reference image
211 * \param result Result image
212 * \param threshold Error metric threshold (good values are 0.02-0.05)
213 * \param logMode Logging mode
214 * \return true if comparison passes, false otherwise
215 *//*--------------------------------------------------------------------*/
fuzzyCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,float threshold,CompareLogMode logMode)216 bool fuzzyCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, float threshold, CompareLogMode logMode)
217 {
218 FuzzyCompareParams params; // Use defaults.
219 TextureLevel errorMask (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), reference.getWidth(), reference.getHeight());
220 float difference = fuzzyCompare(params, reference, result, errorMask.getAccess());
221 bool isOk = difference <= threshold;
222 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
223 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
224
225 if (!isOk || logMode == COMPARE_LOG_EVERYTHING)
226 {
227 // Generate more accurate error mask.
228 params.maxSampleSkip = 0;
229 fuzzyCompare(params, reference, result, errorMask.getAccess());
230
231 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8) && reference.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
232 computeScaleAndBias(reference, result, pixelScale, pixelBias);
233
234 if (!isOk)
235 log << TestLog::Message << "Image comparison failed: difference = " << difference << ", threshold = " << threshold << TestLog::EndMessage;
236
237 log << TestLog::ImageSet(imageSetName, imageSetDesc)
238 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
239 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
240 << TestLog::Image("ErrorMask", "Error mask", errorMask)
241 << TestLog::EndImageSet;
242 }
243 else if (logMode == COMPARE_LOG_RESULT)
244 {
245 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
246 computePixelScaleBias(result, pixelScale, pixelBias);
247
248 log << TestLog::ImageSet(imageSetName, imageSetDesc)
249 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
250 << TestLog::EndImageSet;
251 }
252
253 return isOk;
254 }
255
256 /*--------------------------------------------------------------------*//*!
257 * \brief Fuzzy image comparison
258 *
259 * This image comparison is designed for comparing images rendered by 3D
260 * graphics APIs such as OpenGL. The comparison allows small local differences
261 * and compensates for aliasing.
262 *
263 * The algorithm first performs light blurring on both images and then
264 * does per-pixel analysis. Pixels are compared to 3x3 bilinear surface
265 * defined by adjecent pixels. This compensates for both 1-pixel deviations
266 * in geometry and aliasing in texture data.
267 *
268 * Error metric is computed based on the differences. On valid images the
269 * metric is usually <0.01. Thus good threshold values are in range 0.02 to
270 * 0.05.
271 *
272 * On failure error image is generated that shows where the failing pixels
273 * are.
274 *
275 * \note Currently supports only UNORM_INT8 formats
276 * \param log Test log for results
277 * \param imageSetName Name for image set when logging results
278 * \param imageSetDesc Description for image set
279 * \param reference Reference image
280 * \param result Result image
281 * \param threshold Error metric threshold (good values are 0.02-0.05)
282 * \param logMode Logging mode
283 * \return true if comparison passes, false otherwise
284 *//*--------------------------------------------------------------------*/
fuzzyCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const Surface & reference,const Surface & result,float threshold,CompareLogMode logMode)285 bool fuzzyCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const Surface& reference, const Surface& result, float threshold, CompareLogMode logMode)
286 {
287 return fuzzyCompare(log, imageSetName, imageSetDesc, reference.getAccess(), result.getAccess(), threshold, logMode);
288 }
289
computeSquaredDiffSum(const ConstPixelBufferAccess & ref,const ConstPixelBufferAccess & cmp,const PixelBufferAccess & diffMask,int diffFactor)290 static deInt64 computeSquaredDiffSum (const ConstPixelBufferAccess& ref, const ConstPixelBufferAccess& cmp, const PixelBufferAccess& diffMask, int diffFactor)
291 {
292 TCU_CHECK_INTERNAL(ref.getFormat().type == TextureFormat::UNORM_INT8 && cmp.getFormat().type == TextureFormat::UNORM_INT8);
293 DE_ASSERT(ref.getWidth() == cmp.getWidth() && ref.getWidth() == diffMask.getWidth());
294 DE_ASSERT(ref.getHeight() == cmp.getHeight() && ref.getHeight() == diffMask.getHeight());
295
296 deInt64 diffSum = 0;
297
298 for (int y = 0; y < cmp.getHeight(); y++)
299 {
300 for (int x = 0; x < cmp.getWidth(); x++)
301 {
302 IVec4 a = ref.getPixelInt(x, y);
303 IVec4 b = cmp.getPixelInt(x, y);
304 IVec4 diff = abs(a - b);
305 int sum = diff.x() + diff.y() + diff.z() + diff.w();
306 int sqSum = diff.x()*diff.x() + diff.y()*diff.y() + diff.z()*diff.z() + diff.w()*diff.w();
307
308 diffMask.setPixel(tcu::RGBA(deClamp32(sum*diffFactor, 0, 255), deClamp32(255-sum*diffFactor, 0, 255), 0, 255).toVec(), x, y);
309
310 diffSum += (deInt64)sqSum;
311 }
312 }
313
314 return diffSum;
315 }
316
317 /*--------------------------------------------------------------------*//*!
318 * \brief Per-pixel difference accuracy metric
319 *
320 * Computes accuracy metric using per-pixel differences between reference
321 * and result images.
322 *
323 * \note Supports only integer- and fixed-point formats
324 * \param log Test log for results
325 * \param imageSetName Name for image set when logging results
326 * \param imageSetDesc Description for image set
327 * \param reference Reference image
328 * \param result Result image
329 * \param bestScoreDiff Scaling factor
330 * \param worstScoreDiff Scaling factor
331 * \param logMode Logging mode
332 * \return true if comparison passes, false otherwise
333 *//*--------------------------------------------------------------------*/
measurePixelDiffAccuracy(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,int bestScoreDiff,int worstScoreDiff,CompareLogMode logMode)334 int measurePixelDiffAccuracy (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, int bestScoreDiff, int worstScoreDiff, CompareLogMode logMode)
335 {
336 TextureLevel diffMask (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), reference.getWidth(), reference.getHeight());
337 int diffFactor = 8;
338 deInt64 squaredSum = computeSquaredDiffSum(reference, result, diffMask.getAccess(), diffFactor);
339 float sum = deFloatSqrt((float)squaredSum);
340 int score = deClamp32(deFloorFloatToInt32(100.0f - (de::max(sum-(float)bestScoreDiff, 0.0f) / (float)(worstScoreDiff-bestScoreDiff))*100.0f), 0, 100);
341 const int failThreshold = 10;
342 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
343 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
344
345 if (logMode == COMPARE_LOG_EVERYTHING || score <= failThreshold)
346 {
347 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8) && reference.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
348 computeScaleAndBias(reference, result, pixelScale, pixelBias);
349
350 log << TestLog::ImageSet(imageSetName, imageSetDesc)
351 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
352 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
353 << TestLog::Image("DiffMask", "Difference", diffMask)
354 << TestLog::EndImageSet;
355 }
356 else if (logMode == COMPARE_LOG_RESULT)
357 {
358 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
359 computePixelScaleBias(result, pixelScale, pixelBias);
360
361 log << TestLog::ImageSet(imageSetName, imageSetDesc)
362 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
363 << TestLog::EndImageSet;
364 }
365
366 if (logMode != COMPARE_LOG_ON_ERROR || score <= failThreshold)
367 log << TestLog::Integer("DiffSum", "Squared difference sum", "", QP_KEY_TAG_NONE, squaredSum)
368 << TestLog::Integer("Score", "Score", "", QP_KEY_TAG_QUALITY, score);
369
370 return score;
371 }
372
373 /*--------------------------------------------------------------------*//*!
374 * \brief Per-pixel difference accuracy metric
375 *
376 * Computes accuracy metric using per-pixel differences between reference
377 * and result images.
378 *
379 * \note Supports only integer- and fixed-point formats
380 * \param log Test log for results
381 * \param imageSetName Name for image set when logging results
382 * \param imageSetDesc Description for image set
383 * \param reference Reference image
384 * \param result Result image
385 * \param bestScoreDiff Scaling factor
386 * \param worstScoreDiff Scaling factor
387 * \param logMode Logging mode
388 * \return true if comparison passes, false otherwise
389 *//*--------------------------------------------------------------------*/
measurePixelDiffAccuracy(TestLog & log,const char * imageSetName,const char * imageSetDesc,const Surface & reference,const Surface & result,int bestScoreDiff,int worstScoreDiff,CompareLogMode logMode)390 int measurePixelDiffAccuracy (TestLog& log, const char* imageSetName, const char* imageSetDesc, const Surface& reference, const Surface& result, int bestScoreDiff, int worstScoreDiff, CompareLogMode logMode)
391 {
392 return measurePixelDiffAccuracy(log, imageSetName, imageSetDesc, reference.getAccess(), result.getAccess(), bestScoreDiff, worstScoreDiff, logMode);
393 }
394
395 /*--------------------------------------------------------------------*//*!
396 * Returns the index of float in a float space without denormals
397 * so that:
398 * 1) f(0.0) = 0
399 * 2) f(-0.0) = 0
400 * 3) f(b) = f(a) + 1 <==> b = nextAfter(a)
401 *
402 * See computeFloatFlushRelaxedULPDiff for details
403 *//*--------------------------------------------------------------------*/
getPositionOfIEEEFloatWithoutDenormals(float x)404 static deInt32 getPositionOfIEEEFloatWithoutDenormals (float x)
405 {
406 DE_ASSERT(!deIsNaN(x)); // not sane
407
408 if (x == 0.0f)
409 return 0;
410 else if (x < 0.0f)
411 return -getPositionOfIEEEFloatWithoutDenormals(-x);
412 else
413 {
414 DE_ASSERT(x > 0.0f);
415
416 const tcu::Float32 f(x);
417
418 if (f.isDenorm())
419 {
420 // Denorms are flushed to zero
421 return 0;
422 }
423 else
424 {
425 // sign is 0, and it's a normal number. Natural position is its bit
426 // pattern but since we've collapsed the denorms, we must remove
427 // the gap here too to keep the float enumeration continuous.
428 //
429 // Denormals occupy one exponent pattern. Removing one from
430 // exponent should to the trick.
431 return (deInt32)(f.bits() - (1u << 23u));
432 }
433 }
434 }
435
computeFloatFlushRelaxedULPDiff(float a,float b)436 static deUint32 computeFloatFlushRelaxedULPDiff (float a, float b)
437 {
438 if (deIsNaN(a) && deIsNaN(b))
439 return 0;
440 else if (deIsNaN(a) || deIsNaN(b))
441 {
442 return 0xFFFFFFFFu;
443 }
444 else
445 {
446 // Using the "definition 5" in Muller, Jean-Michel. "On the definition of ulp (x)" (2005)
447 // assuming a floating point space is IEEE single precision floating point space without
448 // denormals (and signed zeros).
449 const deInt32 aIndex = getPositionOfIEEEFloatWithoutDenormals(a);
450 const deInt32 bIndex = getPositionOfIEEEFloatWithoutDenormals(b);
451 return (deUint32)de::abs(aIndex - bIndex);
452 }
453 }
454
computeFlushRelaxedULPDiff(const tcu::Vec4 & a,const tcu::Vec4 & b)455 static tcu::UVec4 computeFlushRelaxedULPDiff (const tcu::Vec4& a, const tcu::Vec4& b)
456 {
457 return tcu::UVec4(computeFloatFlushRelaxedULPDiff(a.x(), b.x()),
458 computeFloatFlushRelaxedULPDiff(a.y(), b.y()),
459 computeFloatFlushRelaxedULPDiff(a.z(), b.z()),
460 computeFloatFlushRelaxedULPDiff(a.w(), b.w()));
461 }
462
463 /*--------------------------------------------------------------------*//*!
464 * \brief Per-pixel threshold-based comparison
465 *
466 * This compare computes per-pixel differences between result and reference
467 * image. Comparison fails if any pixels exceed the given threshold value.
468 *
469 * This comparison uses ULP (units in last place) metric for computing the
470 * difference between floating-point values and thus this function can
471 * be used only for comparing floating-point texture data. In ULP calculation
472 * the denormal numbers are allowed to be flushed to zero.
473 *
474 * On failure error image is generated that shows where the failing pixels
475 * are.
476 *
477 * \param log Test log for results
478 * \param imageSetName Name for image set when logging results
479 * \param imageSetDesc Description for image set
480 * \param reference Reference image
481 * \param result Result image
482 * \param threshold Maximum allowed difference
483 * \param logMode Logging mode
484 * \return true if comparison passes, false otherwise
485 *//*--------------------------------------------------------------------*/
floatUlpThresholdCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const UVec4 & threshold,CompareLogMode logMode)486 bool floatUlpThresholdCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const UVec4& threshold, CompareLogMode logMode)
487 {
488 int width = reference.getWidth();
489 int height = reference.getHeight();
490 int depth = reference.getDepth();
491 TextureLevel errorMaskStorage (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), width, height, depth);
492 PixelBufferAccess errorMask = errorMaskStorage.getAccess();
493 UVec4 maxDiff (0, 0, 0, 0);
494 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
495 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
496
497 TCU_CHECK(result.getWidth() == width && result.getHeight() == height && result.getDepth() == depth);
498
499 for (int z = 0; z < depth; z++)
500 {
501 for (int y = 0; y < height; y++)
502 {
503 for (int x = 0; x < width; x++)
504 {
505 const Vec4 refPix = reference.getPixel(x, y, z);
506 const Vec4 cmpPix = result.getPixel(x, y, z);
507 const UVec4 diff = computeFlushRelaxedULPDiff(refPix, cmpPix);
508 const bool isOk = boolAll(lessThanEqual(diff, threshold));
509
510 maxDiff = max(maxDiff, diff);
511
512 errorMask.setPixel(isOk ? Vec4(0.0f, 1.0f, 0.0f, 1.0f) : Vec4(1.0f, 0.0f, 0.0f, 1.0f), x, y, z);
513 }
514 }
515 }
516
517 bool compareOk = boolAll(lessThanEqual(maxDiff, threshold));
518
519 if (!compareOk || logMode == COMPARE_LOG_EVERYTHING)
520 {
521 // All formats except normalized unsigned fixed point ones need remapping in order to fit into unorm channels in logged images.
522 if (tcu::getTextureChannelClass(reference.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT ||
523 tcu::getTextureChannelClass(result.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
524 {
525 computeScaleAndBias(reference, result, pixelScale, pixelBias);
526 log << TestLog::Message << "Result and reference images are normalized with formula p * " << pixelScale << " + " << pixelBias << TestLog::EndMessage;
527 }
528
529 if (!compareOk)
530 log << TestLog::Message << "Image comparison failed: max difference = " << maxDiff << ", threshold = " << threshold << TestLog::EndMessage;
531
532 log << TestLog::ImageSet(imageSetName, imageSetDesc)
533 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
534 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
535 << TestLog::Image("ErrorMask", "Error mask", errorMask)
536 << TestLog::EndImageSet;
537 }
538 else if (logMode == COMPARE_LOG_RESULT)
539 {
540 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
541 computePixelScaleBias(result, pixelScale, pixelBias);
542
543 log << TestLog::ImageSet(imageSetName, imageSetDesc)
544 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
545 << TestLog::EndImageSet;
546 }
547
548 return compareOk;
549 }
550
551 /*--------------------------------------------------------------------*//*!
552 * \brief Per-pixel threshold-based comparison
553 *
554 * This compare computes per-pixel differences between result and reference
555 * image. Comparison fails if any pixels exceed the given threshold value.
556 *
557 * This comparison can be used for floating-point and fixed-point formats.
558 * Difference is computed in floating-point space.
559 *
560 * On failure an error image is generated that shows where the failing
561 * pixels are.
562 *
563 * \param log Test log for results
564 * \param imageSetName Name for image set when logging results
565 * \param imageSetDesc Description for image set
566 * \param reference Reference image
567 * \param result Result image
568 * \param threshold Maximum allowed difference
569 * \param logMode Logging mode
570 * \return true if comparison passes, false otherwise
571 *//*--------------------------------------------------------------------*/
floatThresholdCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const Vec4 & threshold,CompareLogMode logMode)572 bool floatThresholdCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const Vec4& threshold, CompareLogMode logMode)
573 {
574 int width = reference.getWidth();
575 int height = reference.getHeight();
576 int depth = reference.getDepth();
577 TextureLevel errorMaskStorage (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), width, height, depth);
578 PixelBufferAccess errorMask = errorMaskStorage.getAccess();
579 Vec4 maxDiff (0.0f, 0.0f, 0.0f, 0.0f);
580 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
581 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
582
583 TCU_CHECK_INTERNAL(result.getWidth() == width && result.getHeight() == height && result.getDepth() == depth);
584
585 for (int z = 0; z < depth; z++)
586 {
587 for (int y = 0; y < height; y++)
588 {
589 for (int x = 0; x < width; x++)
590 {
591 Vec4 refPix = reference.getPixel(x, y, z);
592 Vec4 cmpPix = result.getPixel(x, y, z);
593
594 Vec4 diff = abs(refPix - cmpPix);
595 bool isOk = boolAll(lessThanEqual(diff, threshold));
596
597 maxDiff = max(maxDiff, diff);
598
599 errorMask.setPixel(isOk ? Vec4(0.0f, 1.0f, 0.0f, 1.0f) : Vec4(1.0f, 0.0f, 0.0f, 1.0f), x, y, z);
600 }
601 }
602 }
603
604 bool compareOk = boolAll(lessThanEqual(maxDiff, threshold));
605
606 if (!compareOk || logMode == COMPARE_LOG_EVERYTHING)
607 {
608 // All formats except normalized unsigned fixed point ones need remapping in order to fit into unorm channels in logged images.
609 if (tcu::getTextureChannelClass(reference.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT ||
610 tcu::getTextureChannelClass(result.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
611 {
612 computeScaleAndBias(reference, result, pixelScale, pixelBias);
613 log << TestLog::Message << "Result and reference images are normalized with formula p * " << pixelScale << " + " << pixelBias << TestLog::EndMessage;
614 }
615
616 if (!compareOk)
617 log << TestLog::Message << "Image comparison failed: max difference = " << maxDiff << ", threshold = " << threshold << TestLog::EndMessage;
618
619 log << TestLog::ImageSet(imageSetName, imageSetDesc)
620 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
621 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
622 << TestLog::Image("ErrorMask", "Error mask", errorMask)
623 << TestLog::EndImageSet;
624 }
625 else if (logMode == COMPARE_LOG_RESULT)
626 {
627 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
628 computePixelScaleBias(result, pixelScale, pixelBias);
629
630 log << TestLog::ImageSet(imageSetName, imageSetDesc)
631 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
632 << TestLog::EndImageSet;
633 }
634
635 return compareOk;
636 }
637
638 /*--------------------------------------------------------------------*//*!
639 * \brief Per-pixel threshold-based comparison
640 *
641 * This compare computes per-pixel differences between result and reference
642 * color. Comparison fails if any pixels exceed the given threshold value.
643 *
644 * This comparison can be used for floating-point and fixed-point formats.
645 * Difference is computed in floating-point space.
646 *
647 * On failure an error image is generated that shows where the failing
648 * pixels are.
649 *
650 * \param log Test log for results
651 * \param imageSetName Name for image set when logging results
652 * \param imageSetDesc Description for image set
653 * \param reference Reference color
654 * \param result Result image
655 * \param threshold Maximum allowed difference
656 * \param logMode Logging mode
657 * \return true if comparison passes, false otherwise
658 *//*--------------------------------------------------------------------*/
floatThresholdCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const Vec4 & reference,const ConstPixelBufferAccess & result,const Vec4 & threshold,CompareLogMode logMode)659 bool floatThresholdCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const Vec4& reference, const ConstPixelBufferAccess& result, const Vec4& threshold, CompareLogMode logMode)
660 {
661 const int width = result.getWidth();
662 const int height = result.getHeight();
663 const int depth = result.getDepth();
664
665 TextureLevel errorMaskStorage (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), width, height, depth);
666 PixelBufferAccess errorMask = errorMaskStorage.getAccess();
667 Vec4 maxDiff (0.0f, 0.0f, 0.0f, 0.0f);
668 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
669 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
670
671 for (int z = 0; z < depth; z++)
672 {
673 for (int y = 0; y < height; y++)
674 {
675 for (int x = 0; x < width; x++)
676 {
677 const Vec4 cmpPix = result.getPixel(x, y, z);
678 const Vec4 diff = abs(reference - cmpPix);
679 const bool isOk = boolAll(lessThanEqual(diff, threshold));
680
681 maxDiff = max(maxDiff, diff);
682
683 errorMask.setPixel(isOk ? Vec4(0.0f, 1.0f, 0.0f, 1.0f) : Vec4(1.0f, 0.0f, 0.0f, 1.0f), x, y, z);
684 }
685 }
686 }
687
688 bool compareOk = boolAll(lessThanEqual(maxDiff, threshold));
689
690 if (!compareOk || logMode == COMPARE_LOG_EVERYTHING)
691 {
692 // All formats except normalized unsigned fixed point ones need remapping in order to fit into unorm channels in logged images.
693 if (tcu::getTextureChannelClass(result.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
694 {
695 computeScaleAndBias(result, result, pixelScale, pixelBias);
696 log << TestLog::Message << "Result image is normalized with formula p * " << pixelScale << " + " << pixelBias << TestLog::EndMessage;
697 }
698
699 if (!compareOk)
700 log << TestLog::Message << "Image comparison failed: max difference = " << maxDiff << ", threshold = " << threshold << ", reference = " << reference << TestLog::EndMessage;
701
702 log << TestLog::ImageSet(imageSetName, imageSetDesc)
703 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
704 << TestLog::Image("ErrorMask", "Error mask", errorMask)
705 << TestLog::EndImageSet;
706 }
707 else if (logMode == COMPARE_LOG_RESULT)
708 {
709 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
710 computePixelScaleBias(result, pixelScale, pixelBias);
711
712 log << TestLog::ImageSet(imageSetName, imageSetDesc)
713 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
714 << TestLog::EndImageSet;
715 }
716
717 return compareOk;
718 }
719
720 /*--------------------------------------------------------------------*//*!
721 * \brief Per-pixel threshold-based comparison
722 *
723 * This compare computes per-pixel differences between result and reference
724 * image. Comparison fails if any pixels exceed the given threshold value.
725 *
726 * This comparison can be used for integer- and fixed-point texture formats.
727 * Difference is computed in integer space.
728 *
729 * On failure error image is generated that shows where the failing pixels
730 * are.
731 *
732 * \param log Test log for results
733 * \param imageSetName Name for image set when logging results
734 * \param imageSetDesc Description for image set
735 * \param reference Reference image
736 * \param result Result image
737 * \param threshold Maximum allowed difference
738 * \param logMode Logging mode
739 * \return true if comparison passes, false otherwise
740 *//*--------------------------------------------------------------------*/
intThresholdCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const UVec4 & threshold,CompareLogMode logMode)741 bool intThresholdCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const UVec4& threshold, CompareLogMode logMode)
742 {
743 int width = reference.getWidth();
744 int height = reference.getHeight();
745 int depth = reference.getDepth();
746 TextureLevel errorMaskStorage (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), width, height, depth);
747 PixelBufferAccess errorMask = errorMaskStorage.getAccess();
748 UVec4 maxDiff (0, 0, 0, 0);
749 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
750 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
751
752 TCU_CHECK_INTERNAL(result.getWidth() == width && result.getHeight() == height && result.getDepth() == depth);
753
754 for (int z = 0; z < depth; z++)
755 {
756 for (int y = 0; y < height; y++)
757 {
758 for (int x = 0; x < width; x++)
759 {
760 IVec4 refPix = reference.getPixelInt(x, y, z);
761 IVec4 cmpPix = result.getPixelInt(x, y, z);
762
763 UVec4 diff = abs(refPix - cmpPix).cast<deUint32>();
764 bool isOk = boolAll(lessThanEqual(diff, threshold));
765
766 maxDiff = max(maxDiff, diff);
767
768 errorMask.setPixel(isOk ? IVec4(0, 0xff, 0, 0xff) : IVec4(0xff, 0, 0, 0xff), x, y, z);
769 }
770 }
771 }
772
773 bool compareOk = boolAll(lessThanEqual(maxDiff, threshold));
774
775 if (!compareOk || logMode == COMPARE_LOG_EVERYTHING)
776 {
777 // All formats except normalized unsigned fixed point ones need remapping in order to fit into unorm channels in logged images.
778 if (tcu::getTextureChannelClass(reference.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT ||
779 tcu::getTextureChannelClass(result.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
780 {
781 computeScaleAndBias(reference, result, pixelScale, pixelBias);
782 log << TestLog::Message << "Result and reference images are normalized with formula p * " << pixelScale << " + " << pixelBias << TestLog::EndMessage;
783 }
784
785 if (!compareOk)
786 log << TestLog::Message << "Image comparison failed: max difference = " << maxDiff << ", threshold = " << threshold << TestLog::EndMessage;
787
788 log << TestLog::ImageSet(imageSetName, imageSetDesc)
789 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
790 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
791 << TestLog::Image("ErrorMask", "Error mask", errorMask)
792 << TestLog::EndImageSet;
793 }
794 else if (logMode == COMPARE_LOG_RESULT)
795 {
796 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
797 computePixelScaleBias(result, pixelScale, pixelBias);
798
799 log << TestLog::ImageSet(imageSetName, imageSetDesc)
800 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
801 << TestLog::EndImageSet;
802 }
803
804 return compareOk;
805 }
806
807 /*--------------------------------------------------------------------*//*!
808 * \brief Per-pixel threshold-based deviation-ignoring comparison
809 *
810 * This compare computes per-pixel differences between result and reference
811 * image. Comparison fails if there is no pixel matching the given threshold
812 * value in the search volume.
813 *
814 * If the search volume contains out-of-bounds pixels, comparison can be set
815 * to either ignore these pixels in search or to accept any pixel that has
816 * out-of-bounds pixels in its search volume.
817 *
818 * This comparison can be used for integer- and fixed-point texture formats.
819 * Difference is computed in integer space.
820 *
821 * On failure error image is generated that shows where the failing pixels
822 * are.
823 *
824 * \param log Test log for results
825 * \param imageSetName Name for image set when logging results
826 * \param imageSetDesc Description for image set
827 * \param reference Reference image
828 * \param result Result image
829 * \param threshold Maximum allowed difference
830 * \param maxPositionDeviation Maximum allowed distance in the search
831 * volume.
832 * \param acceptOutOfBoundsAsAnyValue Accept any pixel in the boundary region
833 * \param logMode Logging mode
834 * \return true if comparison passes, false otherwise
835 *//*--------------------------------------------------------------------*/
intThresholdPositionDeviationCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const UVec4 & threshold,const tcu::IVec3 & maxPositionDeviation,bool acceptOutOfBoundsAsAnyValue,CompareLogMode logMode)836 bool intThresholdPositionDeviationCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const UVec4& threshold, const tcu::IVec3& maxPositionDeviation, bool acceptOutOfBoundsAsAnyValue, CompareLogMode logMode)
837 {
838 const int width = reference.getWidth();
839 const int height = reference.getHeight();
840 const int depth = reference.getDepth();
841 TextureLevel errorMaskStorage (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), width, height, depth);
842 PixelBufferAccess errorMask = errorMaskStorage.getAccess();
843 const int numFailingPixels = findNumPositionDeviationFailingPixels(errorMask, reference, result, threshold, maxPositionDeviation, acceptOutOfBoundsAsAnyValue);
844 const bool compareOk = numFailingPixels == 0;
845 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
846 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
847
848 if (!compareOk || logMode == COMPARE_LOG_EVERYTHING)
849 {
850 // All formats except normalized unsigned fixed point ones need remapping in order to fit into unorm channels in logged images.
851 if (tcu::getTextureChannelClass(reference.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT ||
852 tcu::getTextureChannelClass(result.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
853 {
854 computeScaleAndBias(reference, result, pixelScale, pixelBias);
855 log << TestLog::Message << "Result and reference images are normalized with formula p * " << pixelScale << " + " << pixelBias << TestLog::EndMessage;
856 }
857
858 if (!compareOk)
859 log << TestLog::Message
860 << "Image comparison failed:\n"
861 << "\tallowed position deviation = " << maxPositionDeviation << "\n"
862 << "\tcolor threshold = " << threshold
863 << TestLog::EndMessage;
864
865 log << TestLog::ImageSet(imageSetName, imageSetDesc)
866 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
867 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
868 << TestLog::Image("ErrorMask", "Error mask", errorMask)
869 << TestLog::EndImageSet;
870 }
871 else if (logMode == COMPARE_LOG_RESULT)
872 {
873 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
874 computePixelScaleBias(result, pixelScale, pixelBias);
875
876 log << TestLog::ImageSet(imageSetName, imageSetDesc)
877 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
878 << TestLog::EndImageSet;
879 }
880
881 return compareOk;
882 }
883
884 /*--------------------------------------------------------------------*//*!
885 * \brief Per-pixel threshold-based deviation-ignoring comparison
886 *
887 * This compare computes per-pixel differences between result and reference
888 * image. Pixel fails the test if there is no pixel matching the given
889 * threshold value in the search volume. Comparison fails if the number of
890 * failing pixels exceeds the given limit.
891 *
892 * If the search volume contains out-of-bounds pixels, comparison can be set
893 * to either ignore these pixels in search or to accept any pixel that has
894 * out-of-bounds pixels in its search volume.
895 *
896 * This comparison can be used for integer- and fixed-point texture formats.
897 * Difference is computed in integer space.
898 *
899 * On failure error image is generated that shows where the failing pixels
900 * are.
901 *
902 * \param log Test log for results
903 * \param imageSetName Name for image set when logging results
904 * \param imageSetDesc Description for image set
905 * \param reference Reference image
906 * \param result Result image
907 * \param threshold Maximum allowed difference
908 * \param maxPositionDeviation Maximum allowed distance in the search
909 * volume.
910 * \param acceptOutOfBoundsAsAnyValue Accept any pixel in the boundary region
911 * \param maxAllowedFailingPixels Maximum number of failing pixels
912 * \param logMode Logging mode
913 * \return true if comparison passes, false otherwise
914 *//*--------------------------------------------------------------------*/
intThresholdPositionDeviationErrorThresholdCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const UVec4 & threshold,const tcu::IVec3 & maxPositionDeviation,bool acceptOutOfBoundsAsAnyValue,int maxAllowedFailingPixels,CompareLogMode logMode)915 bool intThresholdPositionDeviationErrorThresholdCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const UVec4& threshold, const tcu::IVec3& maxPositionDeviation, bool acceptOutOfBoundsAsAnyValue, int maxAllowedFailingPixels, CompareLogMode logMode)
916 {
917 const int width = reference.getWidth();
918 const int height = reference.getHeight();
919 const int depth = reference.getDepth();
920 TextureLevel errorMaskStorage (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), width, height, depth);
921 PixelBufferAccess errorMask = errorMaskStorage.getAccess();
922 const int numFailingPixels = findNumPositionDeviationFailingPixels(errorMask, reference, result, threshold, maxPositionDeviation, acceptOutOfBoundsAsAnyValue);
923 const bool compareOk = numFailingPixels <= maxAllowedFailingPixels;
924 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
925 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
926
927 if (!compareOk || logMode == COMPARE_LOG_EVERYTHING)
928 {
929 // All formats except normalized unsigned fixed point ones need remapping in order to fit into unorm channels in logged images.
930 if (tcu::getTextureChannelClass(reference.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT ||
931 tcu::getTextureChannelClass(result.getFormat().type) != tcu::TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT)
932 {
933 computeScaleAndBias(reference, result, pixelScale, pixelBias);
934 log << TestLog::Message << "Result and reference images are normalized with formula p * " << pixelScale << " + " << pixelBias << TestLog::EndMessage;
935 }
936
937 if (!compareOk)
938 log << TestLog::Message
939 << "Image comparison failed:\n"
940 << "\tallowed position deviation = " << maxPositionDeviation << "\n"
941 << "\tcolor threshold = " << threshold
942 << TestLog::EndMessage;
943 log << TestLog::Message << "Number of failing pixels = " << numFailingPixels << ", max allowed = " << maxAllowedFailingPixels << TestLog::EndMessage;
944
945 log << TestLog::ImageSet(imageSetName, imageSetDesc)
946 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
947 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
948 << TestLog::Image("ErrorMask", "Error mask", errorMask)
949 << TestLog::EndImageSet;
950 }
951 else if (logMode == COMPARE_LOG_RESULT)
952 {
953 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
954 computePixelScaleBias(result, pixelScale, pixelBias);
955
956 log << TestLog::ImageSet(imageSetName, imageSetDesc)
957 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
958 << TestLog::EndImageSet;
959 }
960
961 return compareOk;
962 }
963
964 /*--------------------------------------------------------------------*//*!
965 * \brief Per-pixel threshold-based comparison
966 *
967 * This compare computes per-pixel differences between result and reference
968 * image. Comparison fails if any pixels exceed the given threshold value.
969 *
970 * On failure error image is generated that shows where the failing pixels
971 * are.
972 *
973 * \param log Test log for results
974 * \param imageSetName Name for image set when logging results
975 * \param imageSetDesc Description for image set
976 * \param reference Reference image
977 * \param result Result image
978 * \param threshold Maximum allowed difference
979 * \param logMode Logging mode
980 * \return true if comparison passes, false otherwise
981 *//*--------------------------------------------------------------------*/
pixelThresholdCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const Surface & reference,const Surface & result,const RGBA & threshold,CompareLogMode logMode)982 bool pixelThresholdCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const Surface& reference, const Surface& result, const RGBA& threshold, CompareLogMode logMode)
983 {
984 return intThresholdCompare(log, imageSetName, imageSetDesc, reference.getAccess(), result.getAccess(), threshold.toIVec().cast<deUint32>(), logMode);
985 }
986
987 /*--------------------------------------------------------------------*//*!
988 * \brief Bilinear image comparison
989 *
990 * \todo [pyry] Describe
991 *
992 * On failure error image is generated that shows where the failing pixels
993 * are.
994 *
995 * \note Currently supports only RGBA, UNORM_INT8 formats
996 * \param log Test log for results
997 * \param imageSetName Name for image set when logging results
998 * \param imageSetDesc Description for image set
999 * \param reference Reference image
1000 * \param result Result image
1001 * \param threshold Maximum local difference
1002 * \param logMode Logging mode
1003 * \return true if comparison passes, false otherwise
1004 *//*--------------------------------------------------------------------*/
bilinearCompare(TestLog & log,const char * imageSetName,const char * imageSetDesc,const ConstPixelBufferAccess & reference,const ConstPixelBufferAccess & result,const RGBA threshold,CompareLogMode logMode)1005 bool bilinearCompare (TestLog& log, const char* imageSetName, const char* imageSetDesc, const ConstPixelBufferAccess& reference, const ConstPixelBufferAccess& result, const RGBA threshold, CompareLogMode logMode)
1006 {
1007 TextureLevel errorMask (TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8), reference.getWidth(), reference.getHeight());
1008 bool isOk = bilinearCompare(reference, result, errorMask, threshold);
1009 Vec4 pixelBias (0.0f, 0.0f, 0.0f, 0.0f);
1010 Vec4 pixelScale (1.0f, 1.0f, 1.0f, 1.0f);
1011
1012 if (!isOk || logMode == COMPARE_LOG_EVERYTHING)
1013 {
1014 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8) && reference.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
1015 computeScaleAndBias(reference, result, pixelScale, pixelBias);
1016
1017 if (!isOk)
1018 log << TestLog::Message << "Image comparison failed, threshold = " << threshold << TestLog::EndMessage;
1019
1020 log << TestLog::ImageSet(imageSetName, imageSetDesc)
1021 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
1022 << TestLog::Image("Reference", "Reference", reference, pixelScale, pixelBias)
1023 << TestLog::Image("ErrorMask", "Error mask", errorMask)
1024 << TestLog::EndImageSet;
1025 }
1026 else if (logMode == COMPARE_LOG_RESULT)
1027 {
1028 if (result.getFormat() != TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8))
1029 computePixelScaleBias(result, pixelScale, pixelBias);
1030
1031 log << TestLog::ImageSet(imageSetName, imageSetDesc)
1032 << TestLog::Image("Result", "Result", result, pixelScale, pixelBias)
1033 << TestLog::EndImageSet;
1034 }
1035
1036 return isOk;
1037 }
1038
1039 } // tcu
1040