1 #ifndef _VKTSPVASMGRAPHICSSHADERTESTUTIL_HPP
2 #define _VKTSPVASMGRAPHICSSHADERTESTUTIL_HPP
3 /*-------------------------------------------------------------------------
4 * Vulkan Conformance Tests
5 * ------------------------
7 * Copyright (c) 2017 Google Inc.
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
23 * \brief Graphics pipeline and helper functions for SPIR-V assembly tests
24 *//*--------------------------------------------------------------------*/
26 #include "tcuCommandLine.hpp"
27 #include "tcuRGBA.hpp"
29 #include "vkPrograms.hpp"
30 #include "vktSpvAsmComputeShaderTestUtil.hpp"
31 #include "vktSpvAsmUtils.hpp"
32 #include "vktTestCaseUtil.hpp"
34 #include "deRandom.hpp"
35 #include "deSharedPtr.hpp"
44 namespace SpirVAssembly
47 typedef vk::Unique<VkBuffer> BufferHandleUp;
48 typedef vk::Unique<VkImage> ImageHandleUp;
49 typedef vk::Unique<VkImageView> ImageViewHandleUp;
50 typedef vk::Unique<VkSampler> SamplerHandleUp;
51 typedef de::SharedPtr<BufferHandleUp> BufferHandleSp;
52 typedef de::SharedPtr<ImageHandleUp> ImageHandleSp;
53 typedef de::SharedPtr<ImageViewHandleUp> ImageViewHandleSp;
54 typedef de::SharedPtr<SamplerHandleUp> SamplerHandleSp;
55 typedef vk::Unique<vk::VkShaderModule> ModuleHandleUp;
56 typedef de::SharedPtr<ModuleHandleUp> ModuleHandleSp;
57 typedef std::pair<std::string, vk::VkShaderStageFlagBits> EntryToStage;
58 typedef std::map<std::string, std::vector<EntryToStage> > ModuleMap;
59 typedef std::map<vk::VkShaderStageFlagBits, SpecConstants > StageToSpecConstantMap;
66 NUMBERTYPE_END32, // Marks the end of 32-bit scalar types
70 NUMBERTYPE_END16, // Marks the end of 16-bit scalar types
74 typedef enum RoundingModeFlags_e
76 ROUNDINGMODE_RTE = 0x1, // Round to nearest even
77 ROUNDINGMODE_RTZ = 0x2, // Round to zero
80 typedef bool (*GraphicsVerifyBinaryFunc) (const ProgramBinary& binary);
82 // Resources used by graphics-pipeline-based tests.
83 struct GraphicsResources
85 // Resources used as inputs.
86 std::vector<Resource> inputs;
87 // Input resource format if used
89 // Resources used as outputs. The data supplied will be used as
90 // the expected outputs for the corresponding bindings by default.
91 // If other behaviors are needed, please provide a custom verifyIO.
92 std::vector<Resource> outputs;
93 // If null, a default verification will be performed by comparing the
94 // memory pointed to by outputAllocations and the contents of
95 // expectedOutputs. Otherwise the function pointed to by verifyIO will
96 // be called. If true is returned, then the test case is assumed to
97 // have passed, if false is returned, then the test case is assumed
99 VerifyIOFunc verifyIO;
100 GraphicsVerifyBinaryFunc verifyBinary;
101 SpirvVersion spirvVersion;
104 : inputFormat (VK_FORMAT_R32G32B32A32_SFLOAT)
106 , verifyBinary (DE_NULL)
107 , spirvVersion (SPIRV_VERSION_1_0)
111 // Interface data type.
114 IFDataType (deUint32 numE, NumberType elementT)
116 , elementType (elementT)
118 DE_ASSERT(numE > 0 && numE < 5);
119 DE_ASSERT(elementT != NUMBERTYPE_END32 && elementT != NUMBERTYPE_END16);
122 IFDataType (const IFDataType& that)
123 : numElements (that.numElements)
124 , elementType (that.elementType)
127 deUint32 getElementNumBytes (void) const;
128 deUint32 getNumBytes (void) const { return numElements * getElementNumBytes(); }
130 vk::VkFormat getVkFormat (void) const;
132 tcu::TextureFormat getTextureFormat (void) const;
134 std::string str (void) const;
136 bool elementIs32bit (void) const { return elementType < NUMBERTYPE_END32; }
137 bool elementIs64bit (void) const { return elementType > NUMBERTYPE_END16; }
139 bool isVector (void) const { return numElements > 1; }
141 deUint32 numElements;
142 NumberType elementType;
145 typedef std::pair<IFDataType, BufferSp> Interface;
147 // Interface variables used by graphics-pipeline-based tests.
148 class GraphicsInterfaces
151 GraphicsInterfaces ()
152 : rndMode (static_cast<RoundingModeFlags>(0))
155 GraphicsInterfaces (const GraphicsInterfaces& that)
156 : inputs (that.inputs)
157 , outputs (that.outputs)
158 , rndMode (that.rndMode)
161 void setInputOutput (const Interface& input, const Interface& output)
165 inputs.push_back(input);
166 outputs.push_back(output);
169 const IFDataType& getInputType (void) const
171 DE_ASSERT(inputs.size() == 1);
172 return inputs.front().first;
175 const IFDataType& getOutputType (void) const
177 DE_ASSERT(outputs.size() == 1);
178 return outputs.front().first;
181 const BufferSp& getInputBuffer (void) const
183 DE_ASSERT(inputs.size() == 1);
184 return inputs.front().second;
187 const BufferSp& getOutputBuffer (void) const
189 DE_ASSERT(outputs.size() == 1);
190 return outputs.front().second;
193 bool empty (void) const
195 return inputs.size() == 0;
198 void setRoundingMode (RoundingModeFlags flag)
202 RoundingModeFlags getRoundingMode (void) const
207 // vector<Interface> acts as a null-able Interface here. Canonically we should use
208 // std::unique_ptr, but sadly we cannot leverage C++11 in dEQP. dEQP has its own
209 // de::UniquePtr, but still cumbersome to use in InstanceContext and do copies
210 // at various places.
211 // Public methods should make sure that there are less than two elements in both
212 // members and both members have the same number of elements.
213 std::vector<Interface> inputs;
214 std::vector<Interface> outputs;
215 RoundingModeFlags rndMode;
225 PushConstants (const PushConstants& that)
229 void setPushConstant (const BufferSp& pc)
235 bool empty (void) const
240 const BufferSp& getBuffer(void) const
242 DE_ASSERT(pcs.size() == 1);
247 // Right now we only support one field in the push constant block.
248 std::vector<BufferSp> pcs;
251 // Returns the corresponding buffer usage flag bit for the given descriptor type.
252 VkBufferUsageFlagBits getMatchingBufferUsageFlagBit (VkDescriptorType dType);
254 // Context for a specific test instantiation. For example, an instantiation
255 // may test colors yellow/magenta/cyan/mauve in a tesselation shader
256 // with an entry point named 'main_to_the_main'
257 struct InstanceContext
259 // Map of modules to what entry_points we care to use from those modules.
261 tcu::RGBA inputColors[4];
262 tcu::RGBA outputColors[4];
263 // Concrete SPIR-V code to test via boilerplate specialization.
264 std::map<std::string, std::string> testCodeFragments;
265 StageToSpecConstantMap specConstants;
266 bool hasTessellation;
267 vk::VkShaderStageFlagBits requiredStages;
268 std::vector<std::string> requiredDeviceExtensions;
269 std::vector<std::string> requiredDeviceFeatures;
270 VulkanFeatures requestedFeatures;
271 PushConstants pushConstants;
272 // Specifies the (one or more) stages that use a customized shader code.
273 VkShaderStageFlags customizedStages;
274 // Possible resources used by the graphics pipeline.
275 // If it is not empty, a single descriptor set (number 0) will be allocated
276 // to point to all resources specified. Binding numbers are allocated in
277 // accord with the resources' order in the vector; outputs are allocated
279 GraphicsResources resources;
280 // Possible interface variables use by the graphics pipeline.
281 // If it is not empty, input/output variables will be set up for shader stages
282 // in the test. Both the input and output variable will take location #2 in the
283 // pipeline for all stages, except that the output variable in the fragment
284 // stage will take location #1.
285 GraphicsInterfaces interfaces;
286 qpTestResult failResult;
287 std::string failMessageTemplate; //!< ${reason} in the template will be replaced with a detailed failure message
288 bool renderFullSquare; // Forces to render whole render area, though with background color
290 InstanceContext (const tcu::RGBA (&inputs)[4],
291 const tcu::RGBA (&outputs)[4],
292 const std::map<std::string, std::string>& testCodeFragments_,
293 const StageToSpecConstantMap& specConstants_,
294 const PushConstants& pushConsants_,
295 const GraphicsResources& resources_,
296 const GraphicsInterfaces& interfaces_,
297 const std::vector<std::string>& extensions_,
298 const std::vector<std::string>& features_,
299 VulkanFeatures vulkanFeatures_,
300 VkShaderStageFlags customizedStages_);
302 InstanceContext (const InstanceContext& other);
304 std::string getSpecializedFailMessage (const std::string& failureReason);
307 // A description of a shader to be used for a single stage of the graphics pipeline.
310 // The module that contains this shader entrypoint.
311 std::string moduleName;
313 // The name of the entrypoint.
314 std::string entryName;
316 // Which shader stage this entry point represents.
317 vk::VkShaderStageFlagBits stage;
319 ShaderElement (const std::string& moduleName_, const std::string& entryPoint_, vk::VkShaderStageFlagBits shaderStage_);
322 template <typename T>
323 const std::string numberToString (T number)
325 std::stringstream ss;
330 // Performs a bitwise copy of source to the destination type Dest.
331 template <typename Dest, typename Src>
332 Dest bitwiseCast (Src source)
335 DE_STATIC_ASSERT(sizeof(source) == sizeof(dest));
336 deMemcpy(&dest, &source, sizeof(dest));
340 template<typename T> T randomScalar (de::Random& rnd, T minValue, T maxValue);
341 template<> inline float randomScalar (de::Random& rnd, float minValue, float maxValue) { return rnd.getFloat(minValue, maxValue); }
342 template<> inline deInt32 randomScalar (de::Random& rnd, deInt32 minValue, deInt32 maxValue) { return rnd.getInt(minValue, maxValue); }
345 void getDefaultColors (tcu::RGBA (&colors)[4]);
347 void getHalfColorsFullAlpha (tcu::RGBA (&colors)[4]);
349 void getInvertedDefaultColors (tcu::RGBA (&colors)[4]);
351 // Creates fragments that specialize into a simple pass-through shader (of any kind).
352 std::map<std::string, std::string> passthruFragments (void);
354 void createCombinedModule (vk::SourceCollections& dst, InstanceContext);
356 // This has two shaders of each stage. The first
357 // is a passthrough, the second inverts the color.
358 void createMultipleEntries (vk::SourceCollections& dst, InstanceContext);
360 // Turns a statically sized array of ShaderElements into an instance-context
361 // by setting up the mapping of modules to their contained shaders and stages.
362 // The inputs and expected outputs are given by inputColors and outputColors
364 InstanceContext createInstanceContext (const ShaderElement (&elements)[N],
365 const tcu::RGBA (&inputColors)[4],
366 const tcu::RGBA (&outputColors)[4],
367 const std::map<std::string, std::string>& testCodeFragments,
368 const StageToSpecConstantMap& specConstants,
369 const PushConstants& pushConstants,
370 const GraphicsResources& resources,
371 const GraphicsInterfaces& interfaces,
372 const std::vector<std::string>& extensions,
373 const std::vector<std::string>& features,
374 VulkanFeatures vulkanFeatures,
375 VkShaderStageFlags customizedStages,
376 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
377 const std::string& failMessageTemplate = std::string())
379 InstanceContext ctx (inputColors, outputColors, testCodeFragments, specConstants, pushConstants, resources, interfaces, extensions, features, vulkanFeatures, customizedStages);
380 for (size_t i = 0; i < N; ++i)
382 ctx.moduleMap[elements[i].moduleName].push_back(std::make_pair(elements[i].entryName, elements[i].stage));
383 ctx.requiredStages = static_cast<VkShaderStageFlagBits>(ctx.requiredStages | elements[i].stage);
385 ctx.failResult = failResult;
386 if (!failMessageTemplate.empty())
387 ctx.failMessageTemplate = failMessageTemplate;
391 // The same as createInstanceContext above, without extensions, spec constants, and resources.
393 inline InstanceContext createInstanceContext (const ShaderElement (&elements)[N],
394 tcu::RGBA (&inputColors)[4],
395 const tcu::RGBA (&outputColors)[4],
396 const std::map<std::string, std::string>& testCodeFragments)
398 return createInstanceContext(elements, inputColors, outputColors, testCodeFragments,
399 StageToSpecConstantMap(), PushConstants(), GraphicsResources(),
400 GraphicsInterfaces(), std::vector<std::string>(), std::vector<std::string>(),
401 VulkanFeatures(), vk::VK_SHADER_STAGE_ALL);
404 // The same as createInstanceContext above, but with default colors.
406 InstanceContext createInstanceContext (const ShaderElement (&elements)[N],
407 const std::map<std::string, std::string>& testCodeFragments)
409 tcu::RGBA defaultColors[4];
410 getDefaultColors(defaultColors);
411 return createInstanceContext(elements, defaultColors, defaultColors, testCodeFragments);
414 void addShaderCodeCustomVertex (vk::SourceCollections& dst, InstanceContext& context, const SpirVAsmBuildOptions* spirVAsmBuildOptions);
415 void addShaderCodeCustomTessControl (vk::SourceCollections& dst, InstanceContext& context, const SpirVAsmBuildOptions* spirVAsmBuildOptions);
416 void addShaderCodeCustomTessEval (vk::SourceCollections& dst, InstanceContext& context, const SpirVAsmBuildOptions* spirVAsmBuildOptions);
417 void addShaderCodeCustomGeometry (vk::SourceCollections& dst, InstanceContext& context, const SpirVAsmBuildOptions* spirVAsmBuildOptions);
418 void addShaderCodeCustomFragment (vk::SourceCollections& dst, InstanceContext& context, const SpirVAsmBuildOptions* spirVAsmBuildOptions);
420 void createTestForStage (vk::VkShaderStageFlagBits stage,
421 const std::string& name,
422 const tcu::RGBA (&inputColors)[4],
423 const tcu::RGBA (&outputColors)[4],
424 const std::map<std::string, std::string>& testCodeFragments,
425 const SpecConstants& specConstants,
426 const PushConstants& pushConstants,
427 const GraphicsResources& resources,
428 const GraphicsInterfaces& interfaces,
429 const std::vector<std::string>& extensions,
430 const std::vector<std::string>& features,
431 VulkanFeatures vulkanFeatures,
432 tcu::TestCaseGroup* tests,
433 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
434 const std::string& failMessageTemplate = std::string(),
435 const bool renderFullSquare = false);
437 void createTestsForAllStages (const std::string& name,
438 const tcu::RGBA (&inputColors)[4],
439 const tcu::RGBA (&outputColors)[4],
440 const std::map<std::string, std::string>& testCodeFragments,
441 const SpecConstants& specConstants,
442 const PushConstants& pushConstants,
443 const GraphicsResources& resources,
444 const GraphicsInterfaces& interfaces,
445 const std::vector<std::string>& extensions,
446 const std::vector<std::string>& features,
447 VulkanFeatures vulkanFeatures,
448 tcu::TestCaseGroup* tests,
449 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
450 const std::string& failMessageTemplate = std::string());
452 inline void createTestsForAllStages (const std::string& name,
453 const tcu::RGBA (&inputColors)[4],
454 const tcu::RGBA (&outputColors)[4],
455 const std::map<std::string, std::string>& testCodeFragments,
456 tcu::TestCaseGroup* tests,
457 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
458 const std::string& failMessageTemplate = std::string())
460 SpecConstants noSpecConstants;
461 PushConstants noPushConstants;
462 GraphicsResources noResources;
463 GraphicsInterfaces noInterfaces;
464 std::vector<std::string> noExtensions;
465 std::vector<std::string> noFeatures;
467 createTestsForAllStages(
468 name, inputColors, outputColors, testCodeFragments, noSpecConstants, noPushConstants,
469 noResources, noInterfaces, noExtensions, noFeatures, VulkanFeatures(),
470 tests, failResult, failMessageTemplate);
473 inline void createTestsForAllStages (const std::string& name,
474 const tcu::RGBA (&inputColors)[4],
475 const tcu::RGBA (&outputColors)[4],
476 const std::map<std::string, std::string>& testCodeFragments,
477 const SpecConstants& specConstants,
478 tcu::TestCaseGroup* tests,
479 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
480 const std::string& failMessageTemplate = std::string())
482 PushConstants noPushConstants;
483 GraphicsResources noResources;
484 GraphicsInterfaces noInterfaces;
485 std::vector<std::string> noExtensions;
486 std::vector<std::string> noFeatures;
488 createTestsForAllStages(
489 name, inputColors, outputColors, testCodeFragments, specConstants, noPushConstants,
490 noResources, noInterfaces, noExtensions, noFeatures, VulkanFeatures(),
491 tests, failResult, failMessageTemplate);
494 inline void createTestsForAllStages (const std::string& name,
495 const tcu::RGBA (&inputColors)[4],
496 const tcu::RGBA (&outputColors)[4],
497 const std::map<std::string, std::string>& testCodeFragments,
498 const GraphicsResources& resources,
499 const std::vector<std::string>& extensions,
500 tcu::TestCaseGroup* tests,
501 VulkanFeatures vulkanFeatures = VulkanFeatures(),
502 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
503 const std::string& failMessageTemplate = std::string())
505 SpecConstants noSpecConstants;
506 PushConstants noPushConstants;
507 GraphicsInterfaces noInterfaces;
508 std::vector<std::string> noFeatures;
510 createTestsForAllStages(
511 name, inputColors, outputColors, testCodeFragments, noSpecConstants, noPushConstants,
512 resources, noInterfaces, extensions, noFeatures, vulkanFeatures,
513 tests, failResult, failMessageTemplate);
516 inline void createTestsForAllStages (const std::string& name,
517 const tcu::RGBA (&inputColors)[4],
518 const tcu::RGBA (&outputColors)[4],
519 const std::map<std::string, std::string>& testCodeFragments,
520 const GraphicsResources& resources,
521 const std::vector<std::string>& extensions,
522 const std::vector<std::string>& features,
523 tcu::TestCaseGroup* tests,
524 VulkanFeatures vulkanFeatures = VulkanFeatures(),
525 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
526 const std::string& failMessageTemplate = std::string())
528 SpecConstants noSpecConstants;
529 PushConstants noPushConstants;
530 GraphicsInterfaces noInterfaces;
532 createTestsForAllStages(
533 name, inputColors, outputColors, testCodeFragments, noSpecConstants, noPushConstants,
534 resources, noInterfaces, extensions, features, vulkanFeatures,
535 tests, failResult, failMessageTemplate);
538 inline void createTestsForAllStages (const std::string& name,
539 const tcu::RGBA (&inputColors)[4],
540 const tcu::RGBA (&outputColors)[4],
541 const std::map<std::string, std::string>& testCodeFragments,
542 const GraphicsInterfaces interfaces,
543 const std::vector<std::string>& extensions,
544 tcu::TestCaseGroup* tests,
545 VulkanFeatures vulkanFeatures = VulkanFeatures(),
546 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
547 const std::string& failMessageTemplate = std::string())
549 GraphicsResources noResources;
550 SpecConstants noSpecConstants;
551 std::vector<std::string> noFeatures;
552 PushConstants noPushConstants;
554 createTestsForAllStages(
555 name, inputColors, outputColors, testCodeFragments, noSpecConstants, noPushConstants,
556 noResources, interfaces, extensions, noFeatures, vulkanFeatures,
557 tests, failResult, failMessageTemplate);
560 inline void createTestsForAllStages (const std::string& name,
561 const tcu::RGBA (&inputColors)[4],
562 const tcu::RGBA (&outputColors)[4],
563 const std::map<std::string, std::string>& testCodeFragments,
564 const PushConstants& pushConstants,
565 const GraphicsResources& resources,
566 const std::vector<std::string>& extensions,
567 tcu::TestCaseGroup* tests,
568 VulkanFeatures vulkanFeatures = VulkanFeatures(),
569 const qpTestResult failResult = QP_TEST_RESULT_FAIL,
570 const std::string& failMessageTemplate = std::string())
572 SpecConstants noSpecConstants;
573 GraphicsInterfaces noInterfaces;
574 std::vector<std::string> noFeatures;
576 createTestsForAllStages(
577 name, inputColors, outputColors, testCodeFragments, noSpecConstants, pushConstants,
578 resources, noInterfaces, extensions, noFeatures, vulkanFeatures,
579 tests, failResult, failMessageTemplate);
582 // Sets up and runs a Vulkan pipeline, then spot-checks the resulting image.
583 // Feeds the pipeline a set of colored triangles, which then must occur in the
584 // rendered image. The surface is cleared before executing the pipeline, so
585 // whatever the shaders draw can be directly spot-checked.
586 tcu::TestStatus runAndVerifyDefaultPipeline (Context& context, InstanceContext instance);
588 // Adds a new test to group using custom fragments for the tessellation-control
589 // stage and passthrough fragments for all other stages. Uses default colors
590 // for input and expected output.
591 void addTessCtrlTest (tcu::TestCaseGroup* group, const char* name, const std::map<std::string, std::string>& fragments);
593 // Given the original 32-bit float value, computes the corresponding 16-bit
594 // float value under the given rounding mode flags and compares with the
595 // returned 16-bit float value. Returns true if they are considered as equal.
597 // The following equivalence criteria are respected:
598 // * Positive and negative zeros are considered equivalent.
599 // * Denormalized floats are allowed to be flushed to zeros, including
600 // * Inputted 32bit denormalized float
601 // * Generated 16bit denormalized float
602 // * Different bit patterns of NaNs are allowed.
603 // * For the rest, require exactly the same bit pattern.
604 bool compare16BitFloat (float original, deUint16 returned, RoundingModeFlags flags, tcu::TestLog& log);
606 // Given the original 16-bit float value, computes the corresponding 32-bit
607 // float value and compares with the returned 32-bit float value.
608 // Returns true if they are considered as equal.
610 // The following equivalence criteria are respected:
611 // * Positive and negative zeros are considered equivalent.
612 // * Denormalized floats are allowed to be flushed to zeros, including
613 // * Inputted 16bit denormalized float
614 // * Generated 32bit denormalized float
615 // * Different bit patterns of NaNs are allowed.
616 // * For the rest, require exactly the same bit pattern.
617 bool compare16BitFloat (deUint16 returned, float original, tcu::TestLog& log);
618 bool compare16BitFloat (deFloat16 original, deFloat16 returned, std::string& error);
620 // Given the original 64-bit float value, computes the corresponding 16-bit
621 // float value under the given rounding mode flags and compares with the
622 // returned 16-bit float value. Returns true if they are considered as equal.
624 // The following equivalence criteria are respected:
625 // * Positive and negative zeros are considered equivalent.
626 // * Denormalized floats are allowed to be flushed to zeros, including
627 // * Inputted 64bit denormalized float
628 // * Generated 16bit denormalized float
629 // * Different bit patterns of NaNs are allowed.
630 // * For the rest, require exactly the same bit pattern.
631 bool compare16BitFloat64 (double original, deUint16 returned, RoundingModeFlags flags, tcu::TestLog& log);
633 // Compare the returned 32-bit float against its expected value.
635 // The following equivalence criteria are respected:
636 // * Denormalized floats are allowed to be flushed to zeros, including
637 // * The expected value itself is a denormalized float
638 // * The expected value is a denormalized float if converted to 16bit
639 // * Different bit patterns of NaNs/Infs are allowed.
640 // * For the rest, use C++ float equivalence check.
641 bool compare32BitFloat (float expected, float returned, tcu::TestLog& log);
643 // Compare the returned 64-bit float against its expected value.
645 // The following equivalence criteria are respected:
646 // * Denormalized floats are allowed to be flushed to zeros, including
647 // * The expected value itself is a denormalized float
648 // * The expected value is a denormalized float if converted to 16bit
649 // * Different bit patterns of NaNs/Infs are allowed.
650 // * For the rest, use C++ float equivalence check.
651 bool compare64BitFloat (double expected, double returned, tcu::TestLog& log);
656 #endif // _VKTSPVASMGRAPHICSSHADERTESTUTIL_HPP