procedural-3d-engine/data/shaders/hlsl/shadowmapomni/cubemapdisplay.frag
Ben Clayton ca884587a4 Move shaders into glsl and hlsl directories
Move `data/shaders` to `data/shaders/glsl`
Move `data/hlsl` to `data/shaders/hlsl`

Fix up shader paths in the cpp files to point to the new glsl location.

`data/shaders/hlsl/compile.py` still overwrites the glsl .spv files (for
now).

Issue: #723
2020-06-01 12:22:28 +01:00

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1.5 KiB
GLSL

// 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);
outFragColor.rgb = float3(0.0, 0.0, 0.2);
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;
}