31 lines
805 B
GLSL
31 lines
805 B
GLSL
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#version 440
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layout(location = 0) in vec4 vLCVertPos;
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layout(location = 0) out vec4 fragColor;
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layout(binding = 1) uniform sampler2DShadow shadowMap;
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layout(std140, binding = 0) uniform buf {
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mat4 mvp;
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mat4 lightMvp;
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mat4 shadowBias;
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int useShadow;
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} ubuf;
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void main()
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{
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vec4 adjustedLcVertPos = vLCVertPos;
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adjustedLcVertPos.z -= 0.0001; // bias to avoid acne
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// no textureProj, that seems to end up not doing the perspective divide for z (?)
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vec3 v = adjustedLcVertPos.xyz / adjustedLcVertPos.w;
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float sc = texture(shadowMap, v); // sampler is comparison enabled so compares to z
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float shadowFactor = 0.2;
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if (sc > 0 || ubuf.useShadow == 0)
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shadowFactor = 1.0;
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fragColor = vec4(0.5, 0.3 + ubuf.useShadow * 0.2, 0.7, 1.0) * shadowFactor;
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}
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