44 lines
895 B
HLSL
44 lines
895 B
HLSL
|
|
#if !defined(SPRITE_MASK_SHARED)
|
|
#define SPRITE_MASK_SHARED
|
|
|
|
|
|
// alpha below which a mask should discard a pixel, thereby preventing the stencil buffer from being marked with the Mask's presence
|
|
half _Cutoff;
|
|
|
|
TEXTURE2D(_MainTex);
|
|
SAMPLER(sampler_MainTex);
|
|
|
|
struct Attributes
|
|
{
|
|
float4 positionOS : POSITION;
|
|
half2 texcoord : TEXCOORD0;
|
|
};
|
|
|
|
struct Varyings
|
|
{
|
|
float4 positionCS : SV_POSITION;
|
|
half2 uv : TEXCOORD0;
|
|
};
|
|
|
|
Varyings MaskRenderingVertex(Attributes input)
|
|
{
|
|
Varyings output;
|
|
|
|
output.positionCS = TransformObjectToHClip(input.positionOS.xyz);
|
|
output.uv = input.texcoord;
|
|
|
|
return output;
|
|
}
|
|
|
|
half4 MaskRenderingFragment(Varyings input) : SV_Target
|
|
{
|
|
half4 c = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, input.uv);
|
|
// for masks: discard pixel if alpha falls below MaskingCutoff
|
|
clip(c.a - _Cutoff);
|
|
|
|
return half4(1, 1, 1, 0.2);
|
|
}
|
|
|
|
#endif
|