mirror of
https://github.com/KhronosGroup/glslang
synced 2024-09-19 20:29:54 +00:00
067eb9b48a
Previously, patch constant functions only accepted OutputPatch. This adds InputPatch support, via a pseudo-builtin variable type, so that the patch can be tracked clear through from the qualifier.
48 lines
1004 B
GLSL
48 lines
1004 B
GLSL
// ***
|
|
// per-control-point invocation of PCF from entry point return value with
|
|
// both OutputPatch and InputPatch given to PCF.
|
|
// ***
|
|
|
|
struct hs_in_t
|
|
{
|
|
float3 val : TEXCOORD0;
|
|
};
|
|
|
|
struct hs_pcf_t
|
|
{
|
|
float tfactor[3] : SV_TessFactor; // must turn into a size 4 array in SPIR-V
|
|
float flInFactor : SV_InsideTessFactor; // must turn into a size 2 array in SPIR-V
|
|
};
|
|
|
|
struct hs_out_t
|
|
{
|
|
float3 val : TEXCOORD0;
|
|
};
|
|
|
|
[ domain ("tri") ]
|
|
[ partitioning ("fractional_odd") ]
|
|
[ outputtopology ("triangle_cw") ]
|
|
[ outputcontrolpoints (3) ]
|
|
[ patchconstantfunc ( "PCF" ) ]
|
|
hs_out_t main (InputPatch <hs_in_t, 3> i , uint cpid : SV_OutputControlPointID)
|
|
{
|
|
i[0].val;
|
|
|
|
hs_out_t o;
|
|
o.val = cpid;
|
|
return o;
|
|
}
|
|
|
|
hs_pcf_t PCF( const OutputPatch <hs_out_t, 3> pcf_out,
|
|
const InputPatch <hs_in_t, 3> pcf_in)
|
|
{
|
|
hs_pcf_t o;
|
|
|
|
o.tfactor[0] = pcf_out[0].val.x;
|
|
o.tfactor[1] = pcf_out[1].val.x;
|
|
o.tfactor[2] = pcf_out[2].val.x;
|
|
o.flInFactor = 4;
|
|
|
|
return o;
|
|
}
|