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* Update release number to 83.
Public Issues:
* Use [%inline] directive for all SVGs to reduce file size (public pull
request 734).
* Convert XML `value` aliases into \<alias> tags (public pull request
747).
* Fix metadoc script showing non-selected extensions (public pull request
748).
* Reapply public pull request 742 to make
ename:VK_PIPELINE_STAGE_CONDITIONAL_RENDERING_BIT_EXT part of the
graphices pipeline (public pull request 749).
* Fix numerous typos related to accidental duplication of words (public
pull request 760).
* Fix `vk.xml` contact typos (public pull request 761).
Internal Issues:
* Add images to the <<Standard sample locations>> table (internal issue
1115).
* Add a definition of "`Inherited from`" precision in the
<<spirvenv-precision-operation, Precision and Operation of SPIR-V
Instructions>> section (internal issue 1314).
* Clarify that both built-in and user-defined variables count against the
location limits for shader interfaces in the
<<interfaces-iointerfaces-locations, Location Assignment>> section
(internal issue 1316).
* Merge "`required`" capabilities into the <<spirvenv-capabilities-table,
list of optional: SPIR-V capabilities>> (internal issue 1320).
* Relax the layout matching rules of descriptors referring to only a
single aspect of a depth/stencil image, by reference to the new
<<resources-image-layouts-matching-rule, Image Layout Matching Rules>>
section (internal issue 1346).
* Revert extension metadoc generator warning about name mismatches to a
diagnostic, due to annoying warnings in build output for conscious
choices we've made (internal issue 1351).
Other Issues:
* Reserve bits for pending vendor extensions.
* Make Vulkan consistent with SPIR-V regarding code:DepthReplacing and
code:FragDepth in the <<interfaces-builtin-variables, Built-In
Variables>> section.
* Add missing ChangeLog entries for the previous three spec updates.
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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