80 lines
2.7 KiB
Plaintext
80 lines
2.7 KiB
Plaintext
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#version 450
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layout (location = 0) in vec3 vertexViewSpacePosition;
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layout (location = 1) in vec2 vertexTexCoords;
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layout (location = 0) out vec4 fragLight;
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layout (binding = 0) uniform sampler2D albedo; ///< g-buffer colors
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layout (binding = 1) uniform sampler2D worldSpacePositionMap; ///< vertex position in world-space
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layout (binding = 2) uniform sampler2D viewSpacePositionMap; ///< vertex position in view-space
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layout (binding = 3) uniform sampler2D normalMap; ///< vertex normal in view-space
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layout (binding = 4) uniform sampler2DShadow shadowMap; ///< shadow map
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uniform mat4 viewMatrix; // From world-space to camera view-space
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uniform mat4 shadowMatrix; // From world-space to shadowCamera view-space
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uniform vec3 light_color;
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uniform float light_intensity;
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uniform vec3 light_direction;
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vec3 directionalLightADS(vec3 viewSpaceDirection,
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vec3 viewSpaceNormal,
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vec3 viewSpaceObjectPosition,
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vec3 color,
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float intensity)
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{
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// Lighting
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float Li = intensity;
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vec3 Ka = vec3(0.2);
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vec3 Kd = color;
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vec3 Ks = vec3(0.5);
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float shininess = 10;
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vec3 n = viewSpaceNormal;
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vec3 s = viewSpaceDirection;
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vec3 v = normalize(-vec3(viewSpaceObjectPosition));
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vec3 h = normalize(v + s);
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vec3 pixelLight = vec3((0.2) + Li) *
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((Kd) * max(dot(s, n), 0.0) +
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(Ks) * pow(max(dot(h, n), 0.0), shininess));
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// Final color
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return pixelLight;
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}
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vec4 getShadow(vec3 a, vec3 ds)
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{
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vec4 wp = texture(worldSpacePositionMap, vertexTexCoords);
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vec4 shadowCoord = shadowMatrix * wp;
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float visibility = 1.0;
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if(shadowCoord.z >= 0 ) {
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// vec4 normalTexel = texture(normalMap, vertexTexCoords);
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// float bias = max(0.05 * (1.0 - dot(normalTexel.xyz, light_direction)), 0.005);
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// visibility = textureProj(shadowMap, vec4(shadowCoord.xy, shadowCoord.z-bias, shadowCoord.w), bias);
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// shadowCoord.z -= bias;
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visibility = textureProj(shadowMap, shadowCoord);
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}
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return vec4(a + ds * visibility, 1.0);
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}
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void main()
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{
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// Get texels
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vec4 positionTexel = texture(viewSpacePositionMap, vertexTexCoords);
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vec4 normalTexel = texture(normalMap, vertexTexCoords);
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// Lighting calc
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vec3 a = vec3(0.2);
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vec3 ds = directionalLightADS(normalize(viewMatrix * vec4(light_direction, 0)).xyz,
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normalTexel.xyz,
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positionTexel.xyz,
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light_color,
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light_intensity);
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fragLight = vec4(a + ds, 1);//getShadow(a, ds);
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// fragLight = getShadow(a, ds);
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}
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