130 lines
4.3 KiB
GLSL
130 lines
4.3 KiB
GLSL
void GetMaterials(out float smoothness, out float metalness, out float f0, inout float emission,
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inout float subsurface, out float porosity, out float ao, out vec3 normalMap,
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vec2 newCoord, vec2 dcdx, vec2 dcdy)
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{
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float emissionMat = 0.0;
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#if MATERIAL_FORMAT == 0
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#ifdef PARALLAX
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vec4 specularMap = texture2DGradARB(specular, newCoord, dcdx, dcdy);
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#else
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vec4 specularMap = texture2D(specular, texCoord);
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#endif
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smoothness = specularMap.r;
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f0 = 0.04;
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metalness = specularMap.g;
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emissionMat = specularMap.b * specularMap.b;
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porosity = 0.5 - 0.5 * smoothness;
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subsurface = specularMap.a > 0.0 ? 1.0 - specularMap.a : 0.0;
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#ifdef PARALLAX
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normalMap = texture2DGradARB(normals, newCoord, dcdx, dcdy).xyz * 2.0 - 1.0;
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#else
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normalMap = texture2D(normals, texCoord).xyz * 2.0 - 1.0;
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#endif
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ao = 1.0;
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if (normalMap.x + normalMap.y < -1.999) normalMap = vec3(0.0, 0.0, 1.0);
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#endif
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#if MATERIAL_FORMAT == 1
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vec4 specularMap = texture2DLod(specular, newCoord, 0);
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smoothness = specularMap.r;
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f0 = specularMap.g;
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metalness = f0 >= 0.9 ? 1.0 : 0.0;
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emissionMat = specularMap.a < 1.0 ? clamp(specularMap.a * 1.004 - 0.004, 0.0, 1.0) : 0.0;
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emissionMat *= emissionMat;
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porosity = specularMap.b <= 0.251 ? specularMap.b * 3.984 : 0.0;
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subsurface = specularMap.b > 0.251 ? clamp(specularMap.b * 1.335 - 0.355, 0.0, 1.0) : 0.0;
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#ifdef PARALLAX
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normalMap = vec3(texture2DGradARB(normals, newCoord, dcdx, dcdy).xy, 0.0) * 2.0 - 1.0;
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ao = texture2DGradARB(normals, newCoord, dcdx, dcdy).z;
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#else
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normalMap = vec3(texture2D(normals, texCoord).xy, 0.0) * 2.0 - 1.0;
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ao = texture2D(normals, texCoord).z;
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#endif
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if (normalMap.x + normalMap.y > -1.999) {
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if (length(normalMap.xy) > 1.0) normalMap.xy = normalize(normalMap.xy);
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normalMap.z = sqrt(1.0 - dot(normalMap.xy, normalMap.xy));
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normalMap = normalize(clamp(normalMap, vec3(-1.0), vec3(1.0)));
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}else{
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normalMap = vec3(0.0, 0.0, 1.0);
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ao = 1.0;
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}
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#endif
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#if EMISSIVE == 2
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emission = mix(emissionMat, 1.0, emission);
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#else
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emission = emissionMat;
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#endif
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#ifdef NORMAL_DAMPENING
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mipx = dcdx * atlasSize;
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mipy = dcdy * atlasSize;
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mipDelta = max(dot(mipx, mipx), dot(mipy, mipy));
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miplevel = max(0.25 * log2(mipDelta), 0.0);
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normalMap = normalize(mix(vec3(0.0, 0.0, 1.0), normalMap, 1.0 / exp2(miplevel)));
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#endif
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#if MATERIAL_FORMAT == 2
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vec4 specularMap = texture2DLod(specular, newCoord, 0);
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smoothness = specularMap.r;
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f0 = specularMap.g;
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metalness = f0 >= 0.9 ? 1.0 : 0.0;
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emissionMat = specularMap.a < 1.0 ? clamp(specularMap.a * 1.004 - 0.004, 0.0, 1.0) : 0.0;
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emissionMat *= emissionMat;
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porosity = specularMap.b <= 0.251 ? specularMap.b * 3.984 : 0.0;
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subsurface = specularMap.b > 0.251 ? clamp(specularMap.b * 1.335 - 0.355, 0.0, 1.0) : 0.0;
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#ifdef PARALLAX
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normalMap = vec3(texture2DGradARB(normals, newCoord, dcdx, dcdy).xy, 0.0) * 2.0 - 1.0;
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ao = texture2DGradARB(normals, newCoord, dcdx, dcdy).z;
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#else
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normalMap = vec3(texture2D(normals, texCoord).xy, 0.0) * 2.0 - 1.0;
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ao = texture2D(normals, texCoord).z;
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#endif
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if (normalMap.x + normalMap.y > -1.999) {
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if (length(normalMap.xy) > 1.0) normalMap.xy = normalize(normalMap.xy);
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normalMap.z = sqrt(1.0 - dot(normalMap.xy, normalMap.xy));
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normalMap = normalize(clamp(normalMap, vec3(-1.0), vec3(1.0)));
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}else{
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normalMap = vec3(0.0, 0.0, 1.0);
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ao = 1.0;
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}
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#endif
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#if EMISSIVE == 2
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emission = mix(emissionMat, 1.0, emission);
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#else
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emission = emissionMat;
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#endif
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#ifdef NORMAL_DAMPENING
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mipx = dcdx * atlasSize;
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mipy = dcdy * atlasSize;
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mipDelta = max(dot(mipx, mipx), dot(mipy, mipy));
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miplevel = max(0.25 * log2(mipDelta), 0.0);
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normalMap = normalize(mix(vec3(0.0, 0.0, 1.0), normalMap, 1.0 / exp2(miplevel)));
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#endif
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} |