SPIRV-Cross/reference/shaders-msl/tesc/basic.multi-patch.tesc
Lukas Taparauskas 72a2ec4c1b
MSL: Fix '--msl-multi-patch-workgroup' out of bounds reads when dispatching more threads than control points (#1662)
* Fix '--msl-multi-patch-workgroup' cases where thread count exceeds data bounds

*Fix gl_PrimitiveID off by one error when computing last valid index
*Point gl_out to the last patch's data when threads exceed input data bounds
*Point patchOut to the last patch's data when threads exceed input data bounds

* Update MSL test expectations.

* Undo change to MSL multi-patch hull output bound checks

* Update MSL multi-patch test expectations.
2021-04-29 20:01:26 +02:00

24 lines
1.1 KiB
GLSL

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct main0_patchOut
{
float3 vFoo;
};
kernel void main0(uint3 gl_GlobalInvocationID [[thread_position_in_grid]], constant uint* spvIndirectParams [[buffer(29)]], device main0_patchOut* spvPatchOut [[buffer(27)]], device MTLQuadTessellationFactorsHalf* spvTessLevel [[buffer(26)]])
{
device main0_patchOut& patchOut = spvPatchOut[gl_GlobalInvocationID.x / 1];
uint gl_PrimitiveID = min(gl_GlobalInvocationID.x / 1, spvIndirectParams[1] - 1);
spvTessLevel[gl_PrimitiveID].insideTessellationFactor[0] = half(8.8999996185302734375);
spvTessLevel[gl_PrimitiveID].insideTessellationFactor[1] = half(6.900000095367431640625);
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[0] = half(8.8999996185302734375);
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[1] = half(6.900000095367431640625);
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[2] = half(3.900000095367431640625);
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[3] = half(4.900000095367431640625);
patchOut.vFoo = float3(1.0);
}