setScissorRect: bad docs or validation

Graphics & Games General
jrb OP
Created Sep ’17
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"The scissor rectangle must lie entirely within the current attachment. Fragments that lie outside the scissor rectangle are discarded.

The default value is 

(0, 0, width, height)
, where 
width
and 
height
are the x and y dimensions of the attachment, respectively."


I have an attachment of 1333 x 750. I try to set a scissor of


scissor const MTLScissorRect & 0x000000016e9aa2a8

x NSUInteger 0

y NSUInteger 0

width NSUInteger 1333

height NSUInteger 750


The validation layer fails with:


/BuildRoot/Library/Caches/com.apple.xbs/Sources/Metal/Metal-85.83/ToolsLayers/Debug/MTLDebugRenderCommandEncoder.mm:2029: failed assertion `(rect.y(0) + rect.height(750))(750) must be <= 749'



Either the validation or the docs are incorrect - which is it?

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setScissorRect: bad docs or validation
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