cb21815054
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@14805 178a84e3-b1eb-0310-8ba1-8eac791a3b58
49 lines
1.3 KiB
GLSL
49 lines
1.3 KiB
GLSL
uniform sampler2D ntex;
|
|
|
|
uniform vec4 center[16];
|
|
uniform vec4 col[16];
|
|
uniform float energy[16];
|
|
uniform int lightcount;
|
|
uniform float spec;
|
|
uniform vec2 screen;
|
|
uniform mat4 invproj;
|
|
uniform mat4 viewm;
|
|
|
|
void main() {
|
|
vec2 texc = gl_FragCoord.xy / screen;
|
|
float z = texture2D(ntex, texc).a;
|
|
|
|
vec4 xpos = 2.0 * vec4(texc, z, 1.0) - 1.0f;
|
|
xpos = invproj * xpos;
|
|
xpos /= xpos.w;
|
|
|
|
vec3 diffuse = vec3(0.), specular = vec3(0.);
|
|
|
|
for (int i = 0; i < lightcount; ++i) {
|
|
vec4 pseudocenter = viewm * vec4(center[i].xyz, 1.0);
|
|
pseudocenter /= pseudocenter.w;
|
|
vec3 light_pos = pseudocenter.xyz;
|
|
vec3 light_col = col[i].xyz;
|
|
float d = distance(light_pos, xpos.xyz);
|
|
float att = energy[i] * 200. / (4. * 3.14 * d * d);
|
|
float spec_att = (energy[i] + 10) * 200. / (4. * 3.14 * d * d);
|
|
|
|
vec3 norm = texture2D(ntex, texc).xyz;
|
|
norm = (norm - 0.5) * 2.0;
|
|
|
|
// Light Direction
|
|
vec3 L = normalize(xpos.xyz - light_pos);
|
|
|
|
float NdotL = max(0.0, dot(norm, -L));
|
|
diffuse += NdotL * light_col * att;
|
|
// Reflected light dir
|
|
vec3 R = reflect(-L, norm);
|
|
float RdotE = max(0.0, dot(R, normalize(xpos.xyz)));
|
|
float Specular = pow(RdotE, spec);
|
|
specular += Specular * light_col * spec_att;
|
|
}
|
|
|
|
gl_FragData[0] = vec4(diffuse, 1.);
|
|
gl_FragData[1] = vec4(specular , 1.);
|
|
}
|