51 lines
1.4 KiB
GLSL
51 lines
1.4 KiB
GLSL
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#version 450
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#extension GL_ARB_separate_shader_objects : enable
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#extension GL_ARB_shading_language_420pack : enable
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layout (binding = 1) uniform sampler2D sColorMap;
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layout (binding = 2) uniform sampler2D sNormalHeightMap;
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layout (binding = 3) uniform UBO
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{
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float scale;
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float bias;
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float lightRadius;
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int usePom;
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int displayNormalMap;
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} ubo;
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layout (location = 0) in vec2 inUV;
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layout (location = 1) in vec3 inLightVec;
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layout (location = 2) in vec3 inLightVecB;
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layout (location = 3) in vec3 inSpecular;
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layout (location = 4) in vec3 inEyeVec;
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layout (location = 5) in vec3 inLightDir;
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layout (location = 6) in vec3 inViewVec;
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layout (location = 0) out vec4 outFragColor;
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void main(void)
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{
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vec3 specularColor = vec3(0.0, 0.0, 0.0);
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float invRadius = 1.0/ubo.lightRadius;
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float ambient = 0.5;
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vec3 rgb, normal;
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rgb = (ubo.displayNormalMap == 0) ? texture(sColorMap, inUV).rgb : texture(sNormalHeightMap, inUV).rgb;
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normal = normalize((texture(sNormalHeightMap, inUV).rgb - 0.5) * 2.0);
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float distSqr = dot(inLightVecB, inLightVecB);
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vec3 lVec = inLightVecB * inversesqrt(distSqr);
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vec3 nvViewVec = normalize(inViewVec);
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float specular = pow(clamp(dot(reflect(-nvViewVec, normal), lVec), 0.0, 1.0), 4.0);
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float atten = clamp(1.0 - invRadius * sqrt(distSqr), 0.0, 1.0);
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float diffuse = clamp(dot(lVec, normal), 0.0, 1.0);
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outFragColor = vec4((rgb * ambient + (diffuse * rgb + 0.5 * specular * specularColor.rgb)) * atten, 1.0);
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}
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