1 /*------------------------------------------------------------------------
2 * Vulkan Conformance Tests
3 * ------------------------
4 *
5 * Copyright (c) 2014 The Android Open Source Project
6 * Copyright (c) 2016 The Khronos Group Inc.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 *
20 *//*!
21 * \file
22 * \brief Tessellation Fractional Spacing Tests
23 *//*--------------------------------------------------------------------*/
24
25 #include "vktTessellationFractionalSpacingTests.hpp"
26 #include "vktTestCaseUtil.hpp"
27 #include "vktTessellationUtil.hpp"
28
29 #include "tcuTestLog.hpp"
30
31 #include "vkDefs.hpp"
32 #include "vkBarrierUtil.hpp"
33 #include "vkQueryUtil.hpp"
34 #include "vkBuilderUtil.hpp"
35 #include "vkTypeUtil.hpp"
36 #include "vkCmdUtil.hpp"
37 #include "vkObjUtil.hpp"
38
39 #include "deUniquePtr.hpp"
40 #include "deStringUtil.hpp"
41
42 #include <string>
43 #include <vector>
44
45 namespace vkt
46 {
47 namespace tessellation
48 {
49
50 using namespace vk;
51
52 namespace
53 {
54
55 template <typename T, typename MembT>
members(const std::vector<T> & objs,MembT T::* membP)56 std::vector<MembT> members (const std::vector<T>& objs, MembT T::* membP)
57 {
58 std::vector<MembT> result(objs.size());
59 for (int i = 0; i < static_cast<int>(objs.size()); ++i)
60 result[i] = objs[i].*membP;
61 return result;
62 }
63
64 //! Predicate functor for comparing structs by their members.
65 template <typename Pred, typename T, typename MembT>
66 class MemberPred
67 {
68 public:
MemberPred(MembT T::* membP)69 MemberPred (MembT T::* membP) : m_membP(membP), m_pred(Pred()) {}
operator ()(const T & a,const T & b) const70 bool operator() (const T& a, const T& b) const { return m_pred(a.*m_membP, b.*m_membP); }
71
72 private:
73 MembT T::* m_membP;
74 Pred m_pred;
75 };
76
77 //! Convenience wrapper for MemberPred, because class template arguments aren't deduced based on constructor arguments.
78 template <template <typename> class Pred, typename T, typename MembT>
memberPred(MembT T::* membP)79 inline MemberPred<Pred<MembT>, T, MembT> memberPred (MembT T::* membP) { return MemberPred<Pred<MembT>, T, MembT>(membP); }
80
81 struct Segment
82 {
83 int index; //!< Index of left coordinate in sortedXCoords.
84 float length;
85
Segmentvkt::tessellation::__anon3ad3676d0111::Segment86 Segment (void) : index(-1), length(-1.0f) {}
Segmentvkt::tessellation::__anon3ad3676d0111::Segment87 Segment (int index_, float length_) : index(index_), length(length_) {}
88 };
89
lengths(const std::vector<Segment> & segments)90 inline std::vector<float> lengths (const std::vector<Segment>& segments) { return members(segments, &Segment::length); }
91
92 struct LineData
93 {
94 float tessLevel;
95 float additionalSegmentLength;
96 int additionalSegmentLocation;
97
LineDatavkt::tessellation::__anon3ad3676d0111::LineData98 LineData (float lev, float len, int loc) : tessLevel(lev), additionalSegmentLength(len), additionalSegmentLocation(loc) {}
99 };
100
101 struct TestParams
102 {
103 ShaderLanguage shaderLanguage;
104 SpacingMode spacingMode;
105
TestParamsvkt::tessellation::__anon3ad3676d0111::TestParams106 TestParams(ShaderLanguage sl, SpacingMode sm) : shaderLanguage(sl), spacingMode(sm) {}
107 };
108
109 /*--------------------------------------------------------------------*//*!
110 * \brief Verify fractional spacing conditions for a single line
111 *
112 * Verify that the splitting of an edge (resulting from e.g. an isoline
113 * with outer levels { 1.0, tessLevel }) with a given fractional spacing
114 * mode fulfills certain conditions given in the spec.
115 *
116 * Note that some conditions can't be checked from just one line
117 * (specifically, that the additional segment decreases monotonically
118 * length and the requirement that the additional segments be placed
119 * identically for identical values of clamped level).
120 *
121 * Therefore, the function stores some values to additionalSegmentLengthDst
122 * and additionalSegmentLocationDst that can later be given to
123 * verifyFractionalSpacingMultiple(). A negative value in length means that
124 * no additional segments are present, i.e. there's just one segment.
125 * A negative value in location means that the value wasn't determinable,
126 * i.e. all segments had same length.
127 * The values are not stored if false is returned.
128 *//*--------------------------------------------------------------------*/
verifyFractionalSpacingSingle(tcu::TestLog & log,const SpacingMode spacingMode,const float tessLevel,const std::vector<float> & coords,float * const pOutAdditionalSegmentLength,int * const pOutAdditionalSegmentLocation)129 bool verifyFractionalSpacingSingle (tcu::TestLog& log,
130 const SpacingMode spacingMode,
131 const float tessLevel,
132 const std::vector<float>& coords,
133 float* const pOutAdditionalSegmentLength,
134 int* const pOutAdditionalSegmentLocation)
135 {
136 DE_ASSERT(spacingMode == SPACINGMODE_FRACTIONAL_ODD || spacingMode == SPACINGMODE_FRACTIONAL_EVEN);
137
138 const float clampedLevel = getClampedTessLevel(spacingMode, tessLevel);
139 const int finalLevel = getRoundedTessLevel(spacingMode, clampedLevel);
140 const std::vector<float> sortedCoords = sorted(coords);
141 std::string failNote = "Note: tessellation level is " + de::toString(tessLevel) + "\nNote: sorted coordinates are:\n " + containerStr(sortedCoords);
142
143 if (static_cast<int>(coords.size()) != finalLevel + 1)
144 {
145 log << tcu::TestLog::Message << "Failure: number of vertices is " << coords.size() << "; expected " << finalLevel + 1
146 << " (clamped tessellation level is " << clampedLevel << ")"
147 << "; final level (clamped level rounded up to " << (spacingMode == SPACINGMODE_FRACTIONAL_EVEN ? "even" : "odd") << ") is " << finalLevel
148 << " and should equal the number of segments, i.e. number of vertices minus 1" << tcu::TestLog::EndMessage
149 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
150 return false;
151 }
152
153 if (sortedCoords[0] != 0.0f || sortedCoords.back() != 1.0f)
154 {
155 log << tcu::TestLog::Message << "Failure: smallest coordinate should be 0.0 and biggest should be 1.0" << tcu::TestLog::EndMessage
156 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
157 return false;
158 }
159
160 {
161 std::vector<Segment> segments(finalLevel);
162 for (int i = 0; i < finalLevel; ++i)
163 segments[i] = Segment(i, sortedCoords[i+1] - sortedCoords[i]);
164
165 failNote += "\nNote: segment lengths are, from left to right:\n " + containerStr(lengths(segments));
166
167 {
168 // Divide segments to two different groups based on length.
169
170 std::vector<Segment> segmentsA;
171 std::vector<Segment> segmentsB;
172 segmentsA.push_back(segments[0]);
173
174 for (int segNdx = 1; segNdx < static_cast<int>(segments.size()); ++segNdx)
175 {
176 const float epsilon = 0.001f;
177 const Segment& seg = segments[segNdx];
178
179 if (de::abs(seg.length - segmentsA[0].length) < epsilon)
180 segmentsA.push_back(seg);
181 else if (segmentsB.empty() || de::abs(seg.length - segmentsB[0].length) < epsilon)
182 segmentsB.push_back(seg);
183 else
184 {
185 log << tcu::TestLog::Message << "Failure: couldn't divide segments to 2 groups by length; "
186 << "e.g. segment of length " << seg.length << " isn't approximately equal to either "
187 << segmentsA[0].length << " or " << segmentsB[0].length << tcu::TestLog::EndMessage
188 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
189 return false;
190 }
191 }
192
193 if (clampedLevel == static_cast<float>(finalLevel))
194 {
195 // All segments should be of equal length.
196 if (!segmentsA.empty() && !segmentsB.empty())
197 {
198 log << tcu::TestLog::Message << "Failure: clamped and final tessellation level are equal, but not all segments are of equal length." << tcu::TestLog::EndMessage
199 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
200 return false;
201 }
202 }
203
204 if (segmentsA.empty() || segmentsB.empty()) // All segments have same length. This is ok.
205 {
206 *pOutAdditionalSegmentLength = (segments.size() == 1 ? -1.0f : segments[0].length);
207 *pOutAdditionalSegmentLocation = -1;
208 return true;
209 }
210
211 if (segmentsA.size() != 2 && segmentsB.size() != 2)
212 {
213 log << tcu::TestLog::Message << "Failure: when dividing the segments to 2 groups by length, neither of the two groups has exactly 2 or 0 segments in it" << tcu::TestLog::EndMessage
214 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
215 return false;
216 }
217
218 // For convenience, arrange so that the 2-segment group is segmentsB.
219 if (segmentsB.size() != 2)
220 std::swap(segmentsA, segmentsB);
221
222 // \note For 4-segment lines both segmentsA and segmentsB have 2 segments each.
223 // Thus, we can't be sure which ones were meant as the additional segments.
224 // We give the benefit of the doubt by assuming that they're the shorter
225 // ones (as they should).
226
227 if (segmentsA.size() != 2)
228 {
229 if (segmentsB[0].length > segmentsA[0].length + 0.001f)
230 {
231 log << tcu::TestLog::Message << "Failure: the two additional segments are longer than the other segments" << tcu::TestLog::EndMessage
232 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
233 return false;
234 }
235 }
236 else
237 {
238 // We have 2 segmentsA and 2 segmentsB, ensure segmentsB has the shorter lengths
239 if (segmentsB[0].length > segmentsA[0].length)
240 std::swap(segmentsA, segmentsB);
241 }
242
243 // Check that the additional segments are placed symmetrically.
244 if (segmentsB[0].index + segmentsB[1].index + 1 != static_cast<int>(segments.size()))
245 {
246 log << tcu::TestLog::Message << "Failure: the two additional segments aren't placed symmetrically; "
247 << "one is at index " << segmentsB[0].index << " and other is at index " << segmentsB[1].index
248 << " (note: the two indexes should sum to " << static_cast<int>(segments.size())-1 << ", i.e. numberOfSegments-1)" << tcu::TestLog::EndMessage
249 << tcu::TestLog::Message << failNote << tcu::TestLog::EndMessage;
250 return false;
251 }
252
253 *pOutAdditionalSegmentLength = segmentsB[0].length;
254 if (segmentsA.size() != 2)
255 *pOutAdditionalSegmentLocation = de::min(segmentsB[0].index, segmentsB[1].index);
256 else
257 *pOutAdditionalSegmentLocation = segmentsB[0].length < segmentsA[0].length - 0.001f ? de::min(segmentsB[0].index, segmentsB[1].index)
258 : -1; // \note -1 when can't reliably decide which ones are the additional segments, a or b.
259
260 return true;
261 }
262 }
263 }
264
265 /*--------------------------------------------------------------------*//*!
266 * \brief Verify fractional spacing conditions between multiple lines
267 *
268 * Verify the fractional spacing conditions that are not checked in
269 * verifyFractionalSpacingSingle(). Uses values given by said function
270 * as parameters, in addition to the spacing mode and tessellation level.
271 *//*--------------------------------------------------------------------*/
verifyFractionalSpacingMultiple(tcu::TestLog & log,const SpacingMode spacingMode,const std::vector<float> & tessLevels,const std::vector<float> & additionalSegmentLengths,const std::vector<int> & additionalSegmentLocations)272 static bool verifyFractionalSpacingMultiple (tcu::TestLog& log,
273 const SpacingMode spacingMode,
274 const std::vector<float>& tessLevels,
275 const std::vector<float>& additionalSegmentLengths,
276 const std::vector<int>& additionalSegmentLocations)
277 {
278 DE_ASSERT(spacingMode == SPACINGMODE_FRACTIONAL_ODD || spacingMode == SPACINGMODE_FRACTIONAL_EVEN);
279 DE_ASSERT(tessLevels.size() == additionalSegmentLengths.size() && tessLevels.size() == additionalSegmentLocations.size());
280
281 std::vector<LineData> lineDatas;
282
283 for (int i = 0; i < static_cast<int>(tessLevels.size()); ++i)
284 lineDatas.push_back(LineData(tessLevels[i], additionalSegmentLengths[i], additionalSegmentLocations[i]));
285
286 {
287 const std::vector<LineData> lineDatasSortedByLevel = sorted(lineDatas, memberPred<std::less>(&LineData::tessLevel));
288
289 // Check that lines with identical clamped tessellation levels have identical additionalSegmentLocation.
290
291 for (int lineNdx = 1; lineNdx < static_cast<int>(lineDatasSortedByLevel.size()); ++lineNdx)
292 {
293 const LineData& curData = lineDatasSortedByLevel[lineNdx];
294 const LineData& prevData = lineDatasSortedByLevel[lineNdx-1];
295
296 if (curData.additionalSegmentLocation < 0 || prevData.additionalSegmentLocation < 0)
297 continue; // Unknown locations, skip.
298
299 if (getClampedTessLevel(spacingMode, curData.tessLevel) == getClampedTessLevel(spacingMode, prevData.tessLevel) &&
300 curData.additionalSegmentLocation != prevData.additionalSegmentLocation)
301 {
302 log << tcu::TestLog::Message << "Failure: additional segments not located identically for two edges with identical clamped tessellation levels" << tcu::TestLog::EndMessage
303 << tcu::TestLog::Message << "Note: tessellation levels are " << curData.tessLevel << " and " << prevData.tessLevel
304 << " (clamped level " << getClampedTessLevel(spacingMode, curData.tessLevel) << ")"
305 << "; but first additional segments located at indices "
306 << curData.additionalSegmentLocation << " and " << prevData.additionalSegmentLocation << ", respectively" << tcu::TestLog::EndMessage;
307 return false;
308 }
309 }
310
311 // Check that, among lines with same clamped rounded tessellation level, additionalSegmentLength is monotonically decreasing with "clampedRoundedTessLevel - clampedTessLevel" (the "fraction").
312
313 for (int lineNdx = 1; lineNdx < static_cast<int>(lineDatasSortedByLevel.size()); ++lineNdx)
314 {
315 const LineData& curData = lineDatasSortedByLevel[lineNdx];
316 const LineData& prevData = lineDatasSortedByLevel[lineNdx-1];
317
318 if (curData.additionalSegmentLength < 0.0f || prevData.additionalSegmentLength < 0.0f)
319 continue; // Unknown segment lengths, skip.
320
321 const float curClampedLevel = getClampedTessLevel(spacingMode, curData.tessLevel);
322 const float prevClampedLevel = getClampedTessLevel(spacingMode, prevData.tessLevel);
323 const int curFinalLevel = getRoundedTessLevel(spacingMode, curClampedLevel);
324 const int prevFinalLevel = getRoundedTessLevel(spacingMode, prevClampedLevel);
325
326 if (curFinalLevel != prevFinalLevel)
327 continue;
328
329 const float curFraction = static_cast<float>(curFinalLevel) - curClampedLevel;
330 const float prevFraction = static_cast<float>(prevFinalLevel) - prevClampedLevel;
331
332 if (curData.additionalSegmentLength < prevData.additionalSegmentLength ||
333 (curClampedLevel == prevClampedLevel && curData.additionalSegmentLength != prevData.additionalSegmentLength))
334 {
335 log << tcu::TestLog::Message << "Failure: additional segment length isn't monotonically decreasing with the fraction <n> - <f>, among edges with same final tessellation level" << tcu::TestLog::EndMessage
336 << tcu::TestLog::Message << "Note: <f> stands for the clamped tessellation level and <n> for the final (rounded and clamped) tessellation level" << tcu::TestLog::EndMessage
337 << tcu::TestLog::Message << "Note: two edges have tessellation levels " << prevData.tessLevel << " and " << curData.tessLevel << " respectively"
338 << ", clamped " << prevClampedLevel << " and " << curClampedLevel << ", final " << prevFinalLevel << " and " << curFinalLevel
339 << "; fractions are " << prevFraction << " and " << curFraction
340 << ", but resulted in segment lengths " << prevData.additionalSegmentLength << " and " << curData.additionalSegmentLength << tcu::TestLog::EndMessage;
341 return false;
342 }
343 }
344 }
345
346 return true;
347 }
348
genTessLevelCases(void)349 std::vector<float> genTessLevelCases (void)
350 {
351 std::vector<float> result;
352
353 // Ranges [7.0 .. 8.0), [8.0 .. 9.0) and [9.0 .. 10.0)
354 {
355 static const float rangeStarts[] = { 7.0f, 8.0f, 9.0f };
356 const int numSamplesPerRange = 10;
357
358 for (int rangeNdx = 0; rangeNdx < DE_LENGTH_OF_ARRAY(rangeStarts); ++rangeNdx)
359 for (int i = 0; i < numSamplesPerRange; ++i)
360 result.push_back(rangeStarts[rangeNdx] + static_cast<float>(i)/numSamplesPerRange);
361 }
362
363 // 0.3, 1.3, 2.3, ... , 62.3
364 for (int i = 0; i <= 62; ++i)
365 result.push_back(static_cast<float>(i) + 0.3f);
366
367 return result;
368 }
369
370 //! Create a vector of floats from an array of floats. Offset is in bytes.
readFloatArray(const int count,const void * memory,const int offset)371 std::vector<float> readFloatArray(const int count, const void* memory, const int offset)
372 {
373 std::vector<float> results(count);
374
375 if (count != 0)
376 {
377 const float* pFloatData = reinterpret_cast<const float*>(static_cast<const deUint8*>(memory) + offset);
378 deMemcpy(&results[0], pFloatData, sizeof(float) * count);
379 }
380
381 return results;
382 }
383
initPrograms(vk::SourceCollections & programCollection,TestParams testParams)384 void initPrograms (vk::SourceCollections& programCollection, TestParams testParams)
385 {
386 if (testParams.shaderLanguage == SHADER_LANGUAGE_GLSL)
387 {
388 // Vertex shader: no inputs
389 {
390 std::ostringstream src;
391 src << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_310_ES) << "\n"
392 << "\n"
393 << "void main (void)\n"
394 << "{\n"
395 << "}\n";
396
397 programCollection.glslSources.add("vert") << glu::VertexSource(src.str());
398 }
399
400 // Tessellation control shader
401 {
402 std::ostringstream src;
403 src << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_310_ES) << "\n"
404 << "#extension GL_EXT_tessellation_shader : require\n"
405 << "\n"
406 << "layout(vertices = 1) out;\n"
407 << "\n"
408 << "layout(set = 0, binding = 0, std430) readonly restrict buffer TessLevels {\n"
409 << " float outer1;\n"
410 << "} sb_levels;\n"
411 << "\n"
412 << "void main (void)\n"
413 << "{\n"
414 << " gl_TessLevelOuter[0] = 1.0;\n"
415 << " gl_TessLevelOuter[1] = sb_levels.outer1;\n"
416 << "}\n";
417
418 programCollection.glslSources.add("tesc") << glu::TessellationControlSource(src.str());
419 }
420
421 // Tessellation evaluation shader
422 {
423 std::ostringstream src;
424 src << glu::getGLSLVersionDeclaration(glu::GLSL_VERSION_310_ES) << "\n"
425 << "#extension GL_EXT_tessellation_shader : require\n"
426 << "\n"
427 << "layout(" << getTessPrimitiveTypeShaderName(TESSPRIMITIVETYPE_ISOLINES) << ", "
428 << getSpacingModeShaderName(testParams.spacingMode) << ", point_mode) in;\n"
429 << "\n"
430 << "layout(set = 0, binding = 1, std430) coherent restrict buffer Output {\n"
431 << " int numInvocations;\n"
432 << " float tessCoord[];\n"
433 << "} sb_out;\n"
434 << "\n"
435 << "void main (void)\n"
436 << "{\n"
437 << " int index = atomicAdd(sb_out.numInvocations, 1);\n"
438 << " sb_out.tessCoord[index] = gl_TessCoord.x;\n"
439 << "}\n";
440
441 programCollection.glslSources.add("tese") << glu::TessellationEvaluationSource(src.str());
442 }
443 }
444 else
445 {
446 // Vertex shader - no inputs
447 {
448 std::ostringstream src;
449 src << "void main (void)\n"
450 << "{\n"
451 << "}\n";
452
453 programCollection.hlslSources.add("vert") << glu::VertexSource(src.str());
454 }
455
456 // Tessellation control shader
457 {
458 std::ostringstream src;
459 src << "struct HS_CONSTANT_OUT\n"
460 << "{\n"
461 << " float tessLevelsOuter[2] : SV_TessFactor;\n"
462 << "};\n"
463 << "\n"
464 << "tbuffer TessLevels : register(b0)\n"
465 << "{\n"
466 << " float outer1;\n"
467 << "}\n"
468 << "\n"
469 << "[domain(\"isoline\")]\n"
470 << "[partitioning(\"" << getPartitioningShaderName(testParams.spacingMode) << "\")]\n"
471 << "[outputtopology(\"point\")]\n"
472 << "[outputcontrolpoints(1)]\n"
473 << "[patchconstantfunc(\"PCF\")]\n"
474 << "void main()\n"
475 << "{\n"
476 << "}\n"
477 << "\n"
478 << "HS_CONSTANT_OUT PCF()\n"
479 << "{\n"
480 << " HS_CONSTANT_OUT output;\n"
481 << " output.tessLevelsOuter[0] = 1.0;\n"
482 << " output.tessLevelsOuter[1] = outer1;\n"
483 << " return output;\n"
484 << "}\n";
485
486 programCollection.hlslSources.add("tesc") << glu::TessellationControlSource(src.str());
487 }
488
489 // Tessellation evaluation shader
490 {
491 std::ostringstream src;
492
493 src << "struct OutputStruct\n"
494 << "{\n"
495 << " int numInvocations;\n"
496 << " float tessCoord[];\n"
497 << "};\n"
498 << "globallycoherent RWStructuredBuffer <OutputStruct> Output : register(b1);\n"
499 << "\n"
500 << "void main(float2 tessCoords : SV_DOMAINLOCATION)\n"
501 << "{\n"
502 << " int index;\n"
503 << " InterlockedAdd(Output[0].numInvocations, 1, index);\n"
504 << " Output[0].tessCoord[index] = tessCoords.x;\n"
505 << "}\n";
506
507 programCollection.hlslSources.add("tese") << glu::TessellationEvaluationSource(src.str());
508 }
509 }
510 }
511
test(Context & context,TestParams testParams)512 tcu::TestStatus test (Context& context, TestParams testParams)
513 {
514 DE_ASSERT(testParams.spacingMode == SPACINGMODE_FRACTIONAL_ODD || testParams.spacingMode == SPACINGMODE_FRACTIONAL_EVEN);
515 DE_ASSERT(testParams.shaderLanguage == SHADER_LANGUAGE_GLSL || testParams.shaderLanguage == SHADER_LANGUAGE_HLSL);
516
517 requireFeatures(context.getInstanceInterface(), context.getPhysicalDevice(), FEATURE_TESSELLATION_SHADER | FEATURE_VERTEX_PIPELINE_STORES_AND_ATOMICS);
518
519 const DeviceInterface& vk = context.getDeviceInterface();
520 const VkDevice device = context.getDevice();
521 const VkQueue queue = context.getUniversalQueue();
522 const deUint32 queueFamilyIndex = context.getUniversalQueueFamilyIndex();
523 Allocator& allocator = context.getDefaultAllocator();
524
525 const std::vector<float> tessLevelCases = genTessLevelCases();
526 const int maxNumVertices = 1 + getClampedRoundedTessLevel(testParams.spacingMode, *std::max_element(tessLevelCases.begin(), tessLevelCases.end()));
527
528 // Result buffer: generated tess coords go here.
529
530 const VkDeviceSize resultBufferSizeBytes = sizeof(int) + sizeof(float) * maxNumVertices;
531 const Buffer resultBuffer (vk, device, allocator, makeBufferCreateInfo(resultBufferSizeBytes, VK_BUFFER_USAGE_STORAGE_BUFFER_BIT), MemoryRequirement::HostVisible);
532
533 // Outer1 tessellation level constant buffer.
534
535 const VkDeviceSize tessLevelsBufferSizeBytes = sizeof(float); // we pass only outer1
536 const Buffer tessLevelsBuffer (vk, device, allocator, makeBufferCreateInfo(tessLevelsBufferSizeBytes, VK_BUFFER_USAGE_STORAGE_BUFFER_BIT), MemoryRequirement::HostVisible);
537
538 // Descriptors
539
540 const Unique<VkDescriptorSetLayout> descriptorSetLayout(DescriptorSetLayoutBuilder()
541 .addSingleBinding(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT)
542 .addSingleBinding(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT)
543 .build(vk, device));
544
545 const Unique<VkDescriptorPool> descriptorPool(DescriptorPoolBuilder()
546 .addType(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER)
547 .addType(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER)
548 .build(vk, device, VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT, 1u));
549
550 const Unique<VkDescriptorSet> descriptorSet (makeDescriptorSet(vk, device, *descriptorPool, *descriptorSetLayout));
551 const VkDescriptorBufferInfo tessLevelsBufferInfo = makeDescriptorBufferInfo(tessLevelsBuffer.get(), 0ull, tessLevelsBufferSizeBytes);
552 const VkDescriptorBufferInfo resultBufferInfo = makeDescriptorBufferInfo(resultBuffer.get(), 0ull, resultBufferSizeBytes);
553
554 DescriptorSetUpdateBuilder()
555 .writeSingle(*descriptorSet, DescriptorSetUpdateBuilder::Location::binding(0u), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, &tessLevelsBufferInfo)
556 .writeSingle(*descriptorSet, DescriptorSetUpdateBuilder::Location::binding(1u), VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, &resultBufferInfo)
557 .update(vk, device);
558
559 // Pipeline
560
561 const Unique<VkRenderPass> renderPass (makeRenderPassWithoutAttachments (vk, device));
562 const Unique<VkFramebuffer> framebuffer (makeFramebuffer (vk, device, *renderPass, 0u, DE_NULL, 1u, 1u));
563 const Unique<VkPipelineLayout> pipelineLayout (makePipelineLayout (vk, device, *descriptorSetLayout));
564 const Unique<VkCommandPool> cmdPool (makeCommandPool (vk, device, queueFamilyIndex));
565 const Unique<VkCommandBuffer> cmdBuffer (allocateCommandBuffer (vk, device, *cmdPool, VK_COMMAND_BUFFER_LEVEL_PRIMARY));
566
567 const Unique<VkPipeline> pipeline(GraphicsPipelineBuilder()
568 .setShader(vk, device, VK_SHADER_STAGE_VERTEX_BIT, context.getBinaryCollection().get("vert"), DE_NULL)
569 .setShader(vk, device, VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT, context.getBinaryCollection().get("tesc"), DE_NULL)
570 .setShader(vk, device, VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT, context.getBinaryCollection().get("tese"), DE_NULL)
571 .build(vk, device, *pipelineLayout, *renderPass));
572
573 // Data that will be verified across all cases
574 std::vector<float> additionalSegmentLengths;
575 std::vector<int> additionalSegmentLocations;
576
577 bool success = false;
578
579 // Repeat the test for all tessellation coords cases
580 for (deUint32 tessLevelCaseNdx = 0; tessLevelCaseNdx < tessLevelCases.size(); ++tessLevelCaseNdx)
581 {
582 // Upload tessellation levels data to the input buffer
583 {
584 const Allocation& alloc = tessLevelsBuffer.getAllocation();
585 float* const tessLevelOuter1 = static_cast<float*>(alloc.getHostPtr());
586
587 *tessLevelOuter1 = tessLevelCases[tessLevelCaseNdx];
588 flushAlloc(vk, device, alloc);
589 }
590
591 // Clear the results buffer
592 {
593 const Allocation& alloc = resultBuffer.getAllocation();
594
595 deMemset(alloc.getHostPtr(), 0, static_cast<std::size_t>(resultBufferSizeBytes));
596 flushAlloc(vk, device, alloc);
597 }
598
599 beginCommandBuffer(vk, *cmdBuffer);
600
601 // Begin render pass
602 beginRenderPassWithRasterizationDisabled(vk, *cmdBuffer, *renderPass, *framebuffer);
603
604 vk.cmdBindPipeline(*cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, *pipeline);
605 vk.cmdBindDescriptorSets(*cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, *pipelineLayout, 0u, 1u, &descriptorSet.get(), 0u, DE_NULL);
606
607 vk.cmdDraw(*cmdBuffer, 1u, 1u, 0u, 0u);
608 endRenderPass(vk, *cmdBuffer);
609
610 {
611 const VkBufferMemoryBarrier shaderWriteBarrier = makeBufferMemoryBarrier(
612 VK_ACCESS_SHADER_WRITE_BIT, VK_ACCESS_HOST_READ_BIT, *resultBuffer, 0ull, resultBufferSizeBytes);
613
614 vk.cmdPipelineBarrier(*cmdBuffer, VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, VK_PIPELINE_STAGE_HOST_BIT, 0u,
615 0u, DE_NULL, 1u, &shaderWriteBarrier, 0u, DE_NULL);
616 }
617
618 endCommandBuffer(vk, *cmdBuffer);
619 submitCommandsAndWait(vk, device, queue, *cmdBuffer);
620
621 // Verify the result.
622 {
623 tcu::TestLog& log = context.getTestContext().getLog();
624 const Allocation& resultAlloc = resultBuffer.getAllocation();
625
626 invalidateAlloc(vk, device, resultAlloc);
627
628 const deInt32 numResults = *static_cast<deInt32*>(resultAlloc.getHostPtr());
629 const std::vector<float> resultTessCoords = readFloatArray(numResults, resultAlloc.getHostPtr(), sizeof(deInt32));
630
631 // Outputs
632 float additionalSegmentLength;
633 int additionalSegmentLocation;
634
635 success = verifyFractionalSpacingSingle(log, testParams.spacingMode, tessLevelCases[tessLevelCaseNdx], resultTessCoords,
636 &additionalSegmentLength, &additionalSegmentLocation);
637
638 if (!success)
639 break;
640
641 additionalSegmentLengths.push_back(additionalSegmentLength);
642 additionalSegmentLocations.push_back(additionalSegmentLocation);
643 }
644 } // for tessLevelCaseNdx
645
646 if (success)
647 success = verifyFractionalSpacingMultiple(context.getTestContext().getLog(), testParams.spacingMode, tessLevelCases, additionalSegmentLengths, additionalSegmentLocations);
648
649 return (success ? tcu::TestStatus::pass("OK") : tcu::TestStatus::fail("Failure"));
650 }
651
652 } // anonymous
653
654 //! These tests correspond to dEQP-GLES31.functional.tessellation.fractional_spacing.*
655 //! Check validity of fractional spacing modes. Draws a single isoline, reads tess coords with SSBO.
createFractionalSpacingTests(tcu::TestContext & testCtx)656 tcu::TestCaseGroup* createFractionalSpacingTests (tcu::TestContext& testCtx)
657 {
658 de::MovePtr<tcu::TestCaseGroup> group (new tcu::TestCaseGroup(testCtx, "fractional_spacing", "Test fractional spacing modes"));
659
660 addFunctionCaseWithPrograms(group.get(), "glsl_odd", "", initPrograms, test, TestParams(SHADER_LANGUAGE_GLSL, SPACINGMODE_FRACTIONAL_ODD));
661 addFunctionCaseWithPrograms(group.get(), "glsl_even", "", initPrograms, test, TestParams(SHADER_LANGUAGE_GLSL, SPACINGMODE_FRACTIONAL_EVEN));
662 addFunctionCaseWithPrograms(group.get(), "hlsl_odd", "", initPrograms, test, TestParams(SHADER_LANGUAGE_HLSL, SPACINGMODE_FRACTIONAL_ODD));
663 addFunctionCaseWithPrograms(group.get(), "hlsl_even", "", initPrograms, test, TestParams(SHADER_LANGUAGE_HLSL, SPACINGMODE_FRACTIONAL_EVEN));
664
665 return group.release();
666 }
667
668 } // tessellation
669 } // vkt
670