64 lines
2.2 KiB
Plaintext
64 lines
2.2 KiB
Plaintext
|
#version 450
|
||
|
|
|
||
|
|
layout (location = 0) in vec3 vertexViewSpacePosition;
|
||
|
|
layout (location = 1) in vec2 vertexTexCoords;
|
||
|
|
|
||
|
|
layout (location = 0) out vec4 fragLight;
|
||
|
|
|
||
|
|
layout (binding = 0) uniform sampler2D albedoMap; ///< g-buffer colors
|
||
|
|
layout (binding = 1) uniform sampler2D worldSpacePositionMap; ///< vertex position in world-space
|
||
|
|
layout (binding = 2) uniform sampler2D viewSpacePositionMap; ///< vertex position in view-space
|
||
|
|
layout (binding = 3) uniform sampler2D normalMap; ///< vertex normal in view-space
|
||
|
|
layout (binding = 4) uniform sampler2DShadow shadowMap; ///< shadow map
|
||
|
|
|
||
|
|
uniform mat4 viewMatrix; // From world-space to camera view-space
|
||
|
|
uniform mat4 shadowMatrix; // From world-space to shadowCamera view-space
|
||
|
|
|
||
|
|
uniform vec3 light_color;
|
||
|
|
uniform float light_intensity;
|
||
|
|
uniform float light_attenuation;
|
||
|
|
uniform vec3 light_position;
|
||
|
|
|
||
|
|
vec3 pointLightADS(vec4 diffuseTexel,
|
||
|
|
vec3 positionTexel,
|
||
|
|
vec3 NormalTexel)
|
||
|
|
{
|
||
|
|
// Light position
|
||
|
|
vec3 light_position_viewSpace = (viewMatrix * vec4(light_position, 1)).xyz;
|
||
|
|
|
||
|
|
// Lighting
|
||
|
|
vec3 Lp = light_position_viewSpace;
|
||
|
|
float Li = light_intensity;
|
||
|
|
vec3 Ka = vec3(0.0);
|
||
|
|
vec3 Kd = light_color;
|
||
|
|
vec3 Ks = vec3(0.5);
|
||
|
|
float shininess = 10;
|
||
|
|
vec3 n = normalize(NormalTexel);
|
||
|
|
vec3 s = normalize(vec3(Lp) - positionTexel);
|
||
|
|
vec3 v = normalize(vec3(-positionTexel));
|
||
|
|
vec3 h = normalize(v + s);
|
||
|
|
|
||
|
|
float attentuationFactor = light_attenuation;
|
||
|
|
float distanceToLight = length(Lp.xyz - positionTexel.xyz);
|
||
|
|
float attenuation = 1.0 / (1.0 + attentuationFactor * pow(distanceToLight, 2));
|
||
|
|
|
||
|
|
vec3 pixelLight = vec3(Li * (Ka * diffuseTexel.rgb) +
|
||
|
|
attenuation *
|
||
|
|
((Kd * diffuseTexel.rgb) * max(dot(s, n), 0.0) +
|
||
|
|
(Ks * diffuseTexel.rgb) * pow(max(dot(h, n), 0.0), shininess)));
|
||
|
|
|
||
|
|
// Final color
|
||
|
|
return pixelLight;
|
||
|
|
}
|
||
|
|
|
||
|
|
void main()
|
||
|
|
{
|
||
|
|
// Lighting calc
|
||
|
|
vec3 a = vec3(0.0);
|
||
|
|
vec3 ds = pointLightADS(texture(albedoMap, vertexTexCoords),
|
||
|
|
texture(viewSpacePositionMap, vertexTexCoords).xyz,
|
||
|
|
texture(normalMap, vertexTexCoords).xyz);
|
||
|
|
|
||
|
|
fragLight = vec4(a + ds, 1);
|
||
|
|
}
|