faerbit/Saxum
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Put some code in a function.

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Faerbit 2014-12-05 00:57:17 +01:00
parent 8eb0f6719a
commit b9b7a6e7b4
1 changed files with 12 additions and 11 deletions
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23
Shader/phong.fsh
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@ -68,6 +68,12 @@ float sampleShadow(sampler2DShadow shadowMap, vec4 shadowCoord) {
return visibility;
}
float distanceToBorder(vec2 vector) {
float xDistance = min(vector.x, 1.0-vector.x);
float yDistance = min(vector.y, 1.0-vector.y);
return min(xDistance, yDistance);
}
void main()
{
vec3 ambientColor = ambientFactor * ambientColor;
@ -102,22 +108,17 @@ void main()
// shadows
float visibility = 1.0;
if ((shadowCoord_far.x > 0.0 && shadowCoord_far.x < 1.0) &&
(shadowCoord_far.y > 0.0 && shadowCoord_far.y < 1.0)) {
if ((shadowCoord_middle.x > 0.0 && shadowCoord_middle.x < 1.0) &&
(shadowCoord_middle.y > 0.0 && shadowCoord_middle.y < 1.0)) {
if ((shadowCoord_near.x > 0.0 && shadowCoord_near.x < 1.0) &&
(shadowCoord_near.y > 0.0 && shadowCoord_near.y < 1.0)) {
if (distanceToBorder(shadowCoord_middle.xy) <= 0.5 && distanceToBorder(shadowCoord_middle.xy) > 0.0) {
if (distanceToBorder(shadowCoord_near.xy) <= 0.5 && distanceToBorder(shadowCoord_near.xy) > 0.0) {
visibility = sampleShadow(shadowMap_near, shadowCoord_near);
}
else {
visibility = sampleShadow(shadowMap_middle, shadowCoord_middle);
}
}
else {
visibility = sampleShadow(shadowMap_far, shadowCoord_far);
visibility = sampleShadow(shadowMap_middle, shadowCoord_middle);
}
}
else {
visibility = sampleShadow(shadowMap_far, shadowCoord_far);
}
specularColor *= visibility;
diffuseColor *= visibility;