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* Update release number to 124.
Github Issues:
* Fix Makefile SPECREMARK macro to work when not building in a git tree
(public issue 992).
* Ignore pname:aspectMask for unused attachments in
slink:VkSubpassDescription2KHR valid usage statements (public pull
request 1028).
* Minor markup / spelling fixes (public pull requests 1035, 1045).
Internal Issues:
* Fix markup in Valid Usage statement for slink:VkCreateFramebuffer
(internal issue 1823).
* Add a new <<synchronization-signal-operation-order, _signal operation
order_>> section to the synchronization chapter which describes in
detail the ordering guarantees provided by the API between fence and
semaphore signal operations (internal merge request 3368).
* Move generated `appendix/meta/` files into the Makefile GENERATED
directory (internal merge request 3381).
New Extensions
* `<<VK_KHR_shader_clock>>`
* `<<VK_KHR_timeline_semaphore>>`
110 lines
2.7 KiB
Plaintext
110 lines
2.7 KiB
Plaintext
include::{generated}/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:VkShaderResourceUsageAMD
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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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