ilikecats/stk-code_catmod
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Light: Factorize some code.

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This commit is contained in:
Vincent Lejeune 2014-01-22 22:22:54 +01:00
parent 68976a7a8e
commit b94f8f0c18
1 changed files with 4 additions and 4 deletions
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8
data/shaders/pointlight.frag
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@ -15,10 +15,13 @@ out vec4 Specular;
void main() {
vec2 texc = uv;
float z = texture(ntex, texc).a;
vec3 norm = texture(ntex, texc).xyz;
norm = (norm - 0.5) * 2.0;
vec4 xpos = 2.0 * vec4(texc, z, 1.0) - 1.0f;
xpos = invproj * xpos;
xpos /= xpos.w;
vec3 eyedir = normalize(xpos.xyz);
vec3 diffuse = vec3(0.), specular = vec3(0.);
@ -31,9 +34,6 @@ void main() {
float att = energy[i] * 200. / (4. * 3.14 * d * d);
float spec_att = (energy[i] + 10.) * 200. / (4. * 3.14 * d * d);
vec3 norm = texture(ntex, texc).xyz;
norm = (norm - 0.5) * 2.0;
// Light Direction
vec3 L = normalize(xpos.xyz - light_pos);
@ -41,7 +41,7 @@ void main() {
diffuse += NdotL * light_col * att;
// Reflected light dir
vec3 R = reflect(-L, norm);
float RdotE = max(0.0, dot(R, normalize(xpos.xyz)));
float RdotE = max(0.0, dot(R, eyedir));
float Specular = pow(RdotE, spec);
specular += Specular * light_col * spec_att;
}