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5436521608
* Bump API patch number and header version number to 64 for this update.
Github Issues:
* Add chapter name to the PDF page footer (public pull request 458).
* Fix several mistaken references to the nonexistent etext:VK_DEVICE_LOST
status to etext:VK_ERROR_DEVICE_LOST (public pull request 502).
* Fix description of the tlink:PFN_vkDebugReportCallbackEXT debug report
callback function pointer to match the validation layer behavior (public
issue 534).
* Document experimental KHX extensions and alternate vendor author IDs
also ending in X in more detail in the <<extensions, Layers &
Extensions>> appendix, the extensions section of the style guide, and
the registry schema description document (public issues 536, 580).
* Fix references to ptext:pDepthStencil to properly refer to
pname:pDepthStencilState or pname:pRasterizationState as appropriate in
the slink:VkGraphicsPipelineCreateInfo description (public issue 542).
* Fix wrong parameter name in slink:VkPipelineMultisampleStateCreateInfo
valid usage (public pull request 571).
Internal Issues:
* Update the style guide to describe how to write LaTeX math expressions
in table cells (internal issue 908).
* Define how framebuffer-local dependencies work between subpasses with
the same or different numbers of samples, in the
slink:VkSubpassDescription and <<synchronization-framebuffer-regions,
Framebuffer Region Dependencies>> sections. This clarifies which samples
in an input attachment you are allowed to access after a
framebuffer-local dependency (internal issue 915).
* Specify which storage classes can have an initializer in the
<<spirvenv-module-validation, Validation Rules within a Module>> section
(internal issue 1023).
* Use "LOD" consistently for "level-of-detail", to eliminate spelling
inconsistencies. The term is already standardized in the Glossary
(internal issue 1027).
Other Issues:
* Fix false positives in Makefile dependencies when rules fail, by
deleting partially-made targets.
New Extensions:
* `VK_AMD_shader_info`
109 lines
2.6 KiB
Plaintext
109 lines
2.6 KiB
Plaintext
include::meta/VK_AMD_shader_info.txt[]
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*Last Modified Date*::
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2017-10-09
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Jaakko Konttinen, AMD
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This extension adds a way to query certain information about a compiled
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shader which is part of a pipeline.
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This information may include shader disassembly, shader binary and various
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statistics about a shader's resource usage.
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While this extension provides a mechanism for extracting this information,
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the details regarding the contents or format of this information are not
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specified by this extension and may be provided by the vendor externally.
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Furthermore, all information types are optionally supported, and users
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should not assume every implementation supports querying every type of
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information.
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=== New Object Types
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None.
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=== New Enum Constants
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None.
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=== New Enums
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* elink:VkShaderInfoTypeAMD
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=== New Structures
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* slink:VkShaderStatisticsInfoAMD
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=== New Functions
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* flink:vkGetShaderInfoAMD
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=== Examples
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This example extracts the register usage of a fragment shader within a
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particular graphics pipeline:
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[source,c++]
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----------------------------------------
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extern VkDevice device;
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extern VkPipeline gfxPipeline;
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PFN_vkGetShaderInfoAMD pfnGetShaderInfoAMD = (PFN_vkGetShaderInfoAMD)vkGetDeviceProcAddr(
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device, "vkGetShaderInfoAMD");
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VkShaderStatisticsInfoAMD statistics = {};
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size_t dataSize = sizeof(statistics);
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if (pfnGetShaderInfoAMD(device,
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gfxPipeline,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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VK_SHADER_INFO_TYPE_STATISTICS_AMD,
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&dataSize,
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&statistics) == VK_SUCCESS)
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{
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printf("VGPR usage: %d\n", statistics.resourceUsage.numUsedVgprs);
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printf("SGPR usage: %d\n", statistics.resourceUsage.numUsedSgprs);
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}
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----------------------------------------
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The following example continues the previous example by subsequently
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attempting to query and print shader disassembly about the fragment shader:
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[source,c++]
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----------------------------------------
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// Query disassembly size (if available)
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if (pfnGetShaderInfoAMD(device,
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gfxPipeline,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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VK_SHADER_INFO_TYPE_DISASSEMBLY_AMD,
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&dataSize,
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nullptr) == VK_SUCCESS)
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{
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printf("Fragment shader disassembly:\n");
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void* disassembly = malloc(dataSize);
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// Query disassembly and print
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if (pfnGetShaderInfoAMD(device,
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gfxPipeline,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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VK_SHADER_INFO_TYPE_DISASSEMBLY_AMD,
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&dataSize,
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disassembly) == VK_SUCCESS)
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{
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printf((char*)disassembly);
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}
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free(disassembly);
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}
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----------------------------------------
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=== Version History
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* Revision 1, 2017-10-09 (Jaakko Konttinen)
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- Initial revision
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