94 lines
2.2 KiB
GLSL
94 lines
2.2 KiB
GLSL
#version 450
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#define UF_DEFERRED_SAMPLING 0
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#define UF_CAN_DISCARD 1
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layout (constant_id = 0) const uint TEXTURES = 1;
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layout (binding = 0) uniform sampler2D samplerTextures[TEXTURES];
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struct Material {
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vec4 colorBase;
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vec4 colorEmissive;
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float factorMetallic;
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float factorRoughness;
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float factorOcclusion;
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float factorAlphaCutoff;
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int indexAlbedo;
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int indexNormal;
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int indexEmissive;
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int indexOcclusion;
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int indexMetallicRoughness;
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int modeAlpha;
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int padding1;
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int padding2;
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};
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struct Texture {
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int index;
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int samp;
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int remap;
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float blend;
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vec4 lerp;
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};
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layout (std140, binding = 1) readonly buffer Materials {
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Material materials[];
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};
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layout (std140, binding = 2) readonly buffer Textures {
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Texture textures[];
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};
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layout (location = 0) in vec2 inUv;
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layout (location = 1) in vec2 inSt;
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layout (location = 2) in vec4 inColor;
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layout (location = 3) in vec3 inNormal;
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layout (location = 4) in mat3 inTBN;
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layout (location = 7) in vec3 inPosition;
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layout (location = 8) flat in ivec4 inId;
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layout (location = 0) out uvec2 outId;
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layout (location = 1) out vec2 outNormals;
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#if UF_DEFERRED_SAMPLING
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layout (location = 2) out vec2 outUvs;
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#else
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layout (location = 2) out vec4 outAlbedo;
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#endif
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vec2 encodeNormals( vec3 n ) {
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// return n.xy / sqrt(n.z*8+8) + 0.5;
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#define kPI 3.1415926536f
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return (vec2(atan(n.y,n.x)/kPI, n.z)+1.0)*0.5;
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}
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float wrap( float i ) {
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return fract(i);
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}
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vec2 wrap( vec2 uv ) {
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return vec2( wrap( uv.x ), wrap( uv.y ) );
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}
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float mipLevel( in vec2 uv ) {
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vec2 dx_vtc = dFdx(uv);
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vec2 dy_vtc = dFdy(uv);
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return 0.5 * log2(max(dot(dx_vtc, dx_vtc), dot(dy_vtc, dy_vtc)));
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}
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bool validTextureIndex( int textureIndex ) {
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return 0 <= textureIndex && textureIndex < TEXTURES;
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}
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void main() {
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float mip = mipLevel(inUv.xy);
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vec2 uv = wrap(inUv.xy);
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vec4 C = vec4(0, 0, 0, 0);
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vec3 P = inPosition;
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vec3 N = inNormal;
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#if UF_DEFERRED_SAMPLING
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outUvs = wrap(inUv.xy);
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vec4 outAlbedo = vec4(0,0,0,0);
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#endif
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#if !UF_DEFERRED_SAMPLING
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C = textureLod( samplerTextures[0], inSt, mip );
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#endif
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outNormals = encodeNormals( N );
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outId = ivec2(inId.w+1, inId.y+1);
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} |