2020-05-21 10:20:19 +00:00
|
|
|
// Copyright 2020 Google LLC
|
|
|
|
|
|
|
|
|
|
TextureCube shadowCubeMapTexture : register(t1);
|
|
|
|
|
SamplerState shadowCubeMapSampler : register(s1);
|
|
|
|
|
|
|
|
|
|
float4 main([[vk::location(0)]] float2 inUV : TEXCOORD0) : SV_TARGET
|
|
|
|
|
{
|
|
|
|
|
float4 outFragColor = float4(0, 0, 0, 0);
|
2020-07-28 20:20:38 +02:00
|
|
|
outFragColor.rgb = float3(0.05, 0.05, 0.05);
|
2020-05-21 10:20:19 +00:00
|
|
|
|
|
|
|
|
float3 samplePos = float3(0, 0, 0);
|
|
|
|
|
|
|
|
|
|
// Crude statement to visualize different cube map faces based on UV coordinates
|
|
|
|
|
int x = int(floor(inUV.x / 0.25f));
|
|
|
|
|
int y = int(floor(inUV.y / (1.0 / 3.0)));
|
|
|
|
|
if (y == 1) {
|
|
|
|
|
float2 uv = float2(inUV.x * 4.0f, (inUV.y - 1.0/3.0) * 3.0);
|
|
|
|
|
uv = 2.0 * float2(uv.x - float(x) * 1.0, uv.y) - 1.0;
|
|
|
|
|
switch (x) {
|
|
|
|
|
case 0: // NEGATIVE_X
|
|
|
|
|
samplePos = float3(-1.0f, uv.y, uv.x);
|
|
|
|
|
break;
|
|
|
|
|
case 1: // POSITIVE_Z
|
|
|
|
|
samplePos = float3(uv.x, uv.y, 1.0f);
|
|
|
|
|
break;
|
|
|
|
|
case 2: // POSITIVE_X
|
|
|
|
|
samplePos = float3(1.0, uv.y, -uv.x);
|
|
|
|
|
break;
|
|
|
|
|
case 3: // NEGATIVE_Z
|
|
|
|
|
samplePos = float3(-uv.x, uv.y, -1.0f);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
if (x == 1) {
|
|
|
|
|
float2 uv = float2((inUV.x - 0.25) * 4.0, (inUV.y - float(y) / 3.0) * 3.0);
|
|
|
|
|
uv = 2.0 * uv - 1.0;
|
|
|
|
|
switch (y) {
|
|
|
|
|
case 0: // NEGATIVE_Y
|
|
|
|
|
samplePos = float3(uv.x, -1.0f, uv.y);
|
|
|
|
|
break;
|
|
|
|
|
case 2: // POSITIVE_Y
|
|
|
|
|
samplePos = float3(uv.x, 1.0f, -uv.y);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((samplePos.x != 0.0f) && (samplePos.y != 0.0f)) {
|
|
|
|
|
float dist = length(shadowCubeMapTexture.Sample(shadowCubeMapSampler, samplePos).xyz) * 0.005;
|
|
|
|
|
outFragColor = float4(dist.xxx, 1.0);
|
|
|
|
|
}
|
|
|
|
|
return outFragColor;
|
|
|
|
|
}
|