66 lines
No EOL
1.7 KiB
GLSL
66 lines
No EOL
1.7 KiB
GLSL
#version 120
|
|
|
|
varying vec3 vertex;
|
|
varying vec3 normal;
|
|
varying vec3 lightDirection;
|
|
|
|
uniform vec3 lightColor;
|
|
uniform vec3 lightPosition;
|
|
uniform vec3 materialColor;
|
|
uniform int materialKind;
|
|
uniform int materialSeed;
|
|
|
|
uniform int explLightsNum;
|
|
uniform vec3 explLightsPos[10];
|
|
uniform float explLightsIntensities[10];
|
|
|
|
void main()
|
|
{
|
|
vec3 Eye = normalize(-vertex);
|
|
vec3 Reflected = normalize(reflect( -lightPosition, normal));
|
|
|
|
vec3 IAmbient = vec3(0.05f);
|
|
|
|
if (materialKind == 6) {
|
|
// sun: shines by itself
|
|
gl_FragColor = vec4(materialColor, 1.0);
|
|
return;
|
|
}
|
|
|
|
// TODO: add noise texture
|
|
vec3 color = materialColor;
|
|
color = max(vec3(0.0), min(vec3(1.0), color));
|
|
|
|
vec3 light = lightColor * max(dot(normal, lightDirection), 0.0);
|
|
//vec3 light = vec3(0.0);
|
|
|
|
int i;
|
|
for (i=0; i<explLightsNum; i++) {
|
|
vec3 explLightColor = vec3(1.0, 0.8, 0.3);
|
|
vec3 diff = vertex - explLightsPos[i];
|
|
float l = 10.0*length(diff);
|
|
float dir = max(0.0, -dot(normal, diff));
|
|
float dp = max(0.0, 1.0-l);
|
|
|
|
float intensity = 10.0;
|
|
if (dp == 0.0) {
|
|
intensity *= dir;
|
|
} else {
|
|
intensity *= dp;
|
|
}
|
|
intensity /= 1.0 + 0.5*l*l;
|
|
|
|
light += intensity * pow(explLightsIntensities[i], 2.0) * explLightColor;
|
|
}
|
|
|
|
light = max(vec3(0.0), light);
|
|
|
|
vec3 IDiffuse = vec3(color) * light;
|
|
|
|
// TODO make instensity/exponent as parameter
|
|
//vec3 ISpecular = lightColor * 5.0 * pow(max(dot(Reflected, Eye), 0.0), 2.0);
|
|
//vec3 ISpecular = lightColor * pow(max(dot(Reflected, Eye), 0.0), 2.0);
|
|
|
|
//gl_FragColor = vec4((IAmbient + IDiffuse) + ISpecular, 1.0);
|
|
gl_FragColor = vec4((IAmbient + IDiffuse), 1.0);
|
|
} |