79 lines
2.5 KiB
GLSL
79 lines
2.5 KiB
GLSL
#version 450
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// layout (local_size_x = 4, local_size_y = 4, local_size_z = 4) in;
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layout (local_size_x = 64, local_size_y = 1, local_size_z = 1) in;
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#include "compiled.glsl"
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#include "std/math.glsl"
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#include "std/gbuffer.glsl"
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#include "std/shadows.glsl"
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#include "std/imageatomic.glsl"
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uniform vec3 lightPos;
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uniform vec3 lightColor;
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uniform int lightType;
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uniform vec3 lightDir;
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uniform vec2 spotData;
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#ifndef _NoShadows
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uniform int lightShadow;
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uniform vec2 lightProj;
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uniform float shadowsBias;
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uniform mat4 LVP;
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#endif
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uniform layout(binding = 0, rgba8) readonly image3D voxelsOpac;
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uniform layout(binding = 1, r32ui) readonly uimage3D voxelsNor;
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// uniform layout(binding = 2, rgba8) writeonly image3D voxels;
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uniform layout(binding = 2, r32ui) uimage3D voxels;
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#ifndef _NoShadows
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uniform layout(binding = 3) sampler2D shadowMap;
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uniform layout(binding = 4) samplerCube shadowMapCube;
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#endif
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void main() {
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vec4 col = imageLoad(voxelsOpac, ivec3(gl_GlobalInvocationID.xyz));
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if (col.a == 0.0) return;
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const vec3 hres = voxelgiResolution / 2;
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vec3 wposition = ((gl_GlobalInvocationID.xyz - hres) / hres) * voxelgiHalfExtents;
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uint unor = imageLoad(voxelsNor, ivec3(gl_GlobalInvocationID.xyz)).r;
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vec3 wnormal = normalize(decNor(unor));
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wposition -= wnormal * 0.01; // Offset
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float visibility;
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vec3 lp = lightPos - wposition;
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vec3 l;
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if (lightType == 0) { l = lightDir; visibility = 1.0; }
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else { l = normalize(lp); visibility = attenuate(distance(wposition, lightPos)); }
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float dotNL = max(dot(wnormal, l), 0.0);
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if (dotNL == 0.0) return;
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#ifndef _NoShadows
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if (lightShadow == 1) {
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vec4 lampPos = LVP * vec4(wposition, 1.0);
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vec3 lPos = lampPos.xyz / lampPos.w;
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// if (lampPos.w > 0.0)
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if (texture(shadowMap, lPos.xy).r < lPos.z - shadowsBias) visibility = 0.0;
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// visibility = shadowTest(shadowMap, lPos, shadowsBias, shadowmapSize);
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}
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else if (lightShadow == 2) visibility *= float(texture(shadowMapCube, -l).r + shadowsBias > lpToDepth(lp, lightProj));
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#endif
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if (lightType == 2) {
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float spotEffect = dot(lightDir, l);
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if (spotEffect < spotData.x) {
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visibility *= smoothstep(spotData.y, spotData.x, spotEffect);
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}
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}
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col.rgb *= visibility * lightColor * dotNL;
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col = clamp(col, vec4(0.0), vec4(1.0));
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// imageStore(voxels, ivec3(gl_GlobalInvocationID.xyz), col);
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imageAtomicAdd(voxels, ivec3(gl_GlobalInvocationID.xyz), convVec4ToRGBA8(col * 255));
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}
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