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Improved VK_EXT_descriptor_heap align limits #2787

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Merged
oddhack merged 1 commit into from
Aug 27, 2026
Merged

Improved VK_EXT_descriptor_heap align limits #2787

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6 changes: 3 additions & 3 deletions chapters/limits.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -7488,9 +7488,9 @@ ifdef::VK_EXT_descriptor_heap[]
| pname:samplerDescriptorSize | - | 32 | max
| pname:imageDescriptorSize | - | 64 | max
| pname:bufferDescriptorSize | - | 128 | max
| pname:samplerDescriptorAlignment | - | 32 | max
| pname:imageDescriptorAlignment | - | 64 | max
| pname:bufferDescriptorAlignment | - | 128 | max
| pname:samplerDescriptorAlignment | - | [eq]#min(32, pname:samplerDescriptorSize)# | max
| pname:imageDescriptorAlignment | - | [eq]#min(64, pname:imageDescriptorSize)# | max
| pname:bufferDescriptorAlignment | - | [eq]#min(128, pname:bufferDescriptorSize)# | max
| pname:maxPushDataSize | - | 256 | min
| pname:maxDescriptorHeapEmbeddedSamplers | - | 2032 | min
| pname:samplerYcbcrConversionCount | - | 3 | max
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6 changes: 3 additions & 3 deletions proposals/VK_EXT_descriptor_heap.adoc
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Expand Up @@ -1018,9 +1018,9 @@ These properties have the following required values:
| samplerDescriptorSize | 32 | max | Implementor request
| imageDescriptorSize | 64 | max | Implementor request
| bufferDescriptorSize | 128 | max | Implementor request
| samplerDescriptorAlignment | 32 | max | samplerDescriptorSize
| imageDescriptorAlignment | 64 | max | imageDescriptorSize
| bufferDescriptorAlignment | 128 | max | bufferDescriptorSize
| samplerDescriptorAlignment | min(32, samplerDescriptorSize) | max | samplerDescriptorSize
| imageDescriptorAlignment | min(64, imageDescriptorSize) | max | imageDescriptorSize
| bufferDescriptorAlignment | min(128, bufferDescriptorSize) | max | bufferDescriptorSize
| maxPushDataSize | 256 | min | Matches DirectX 12 requirements for root parameters
| maxDescriptorHeapEmbeddedSamplers | 2032 | min | DirectX 12 static sampler limit
| samplerYcbcrConversionCount | 3 | max | xref:{refpages}VkSamplerYcbcrConversionImageFormatProperties.html[combinedImageSamplerDescriptorCount]
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