public void setShaders(String vertexShader, String fragmentShader) {
StringBuffer sb = new StringBuffer();
StringBuffer vc = new StringBuffer();
for (int i = 0; i < mLights.size(); ++i) {
ALight light = mLights.get(i);
if (light.getLightType() == ALight.POINT_LIGHT) {
sb.append("L = normalize(uLightPosition").append(i).append(" - V.xyz);\n");
vc.append("dist = distance(V.xyz, uLightPosition").append(i).append(");\n");
vc.append("vAttenuation")
.append(i)
.append(" = 1.0 / (uLightAttenuation")
.append(i)
.append("[1] + uLightAttenuation")
.append(i)
.append("[2] * dist + uLightAttenuation")
.append(i)
.append("[3] * dist * dist);\n");
} else if (light.getLightType() == ALight.DIRECTIONAL_LIGHT) {
vc.append("vAttenuation").append(i).append(" = 1.0;\n");
sb.append("L = -normalize(uLightDirection").append(i).append(");\n");
}
sb.append("intensity += uLightPower")
.append(i)
.append(" * max(dot(N, L), 0.1) * vAttenuation")
.append(i)
.append(";\n");
sb.append("Kd += uLightColor")
.append(i)
.append(" * uLightPower")
.append(i)
.append(" * max(dot(N, L), 0.1) * vAttenuation")
.append(i)
.append(";\n");
}
super.setShaders(
vertexShader.replace("%LIGHT_CODE%", vc.toString()),
fragmentShader.replace("%LIGHT_CODE%", sb.toString()));
}
public void setShaders(String vertexShader, String fragmentShader) {
StringBuffer fc = new StringBuffer();
StringBuffer vc = new StringBuffer();
for (int i = 0; i < mLights.size(); ++i) {
ALight light = mLights.get(i);
if (light.getLightType() == ALight.POINT_LIGHT) {
vc.append("dist = distance(V.xyz, uLightPosition").append(i).append(");\n");
vc.append("vAttenuation")
.append(i)
.append(" = 1.0 / (uLightAttenuation")
.append(i)
.append("[1] + uLightAttenuation")
.append(i)
.append("[2] * dist + uLightAttenuation")
.append(i)
.append("[3] * dist * dist);\n");
fc.append("L = normalize(uLightPosition").append(i).append(" - V.xyz);\n");
} else if (light.getLightType() == ALight.SPOT_LIGHT) {
vc.append("dist = distance(V.xyz, uLightPosition").append(i).append(");\n");
vc.append("vAttenuation")
.append(i)
.append(" = (uLightAttenuation")
.append(i)
.append("[1] + uLightAttenuation")
.append(i)
.append("[2] * dist + uLightAttenuation")
.append(i)
.append("[3] * dist * dist);\n");
fc.append("L = normalize(uLightPosition").append(i).append(" - V.xyz);\n");
fc.append("vec3 spotDir")
.append(i)
.append(" = normalize(-uLightDirection")
.append(i)
.append(");\n");
fc.append("float spot_factor = dot( L, spotDir").append(i).append(" );\n");
fc.append("if( uSpotCutoffAngle").append(i).append(" < 180.0 ) {\n");
fc.append("if( spot_factor >= cos( radians( uSpotCutoffAngle")
.append(i)
.append(") ) ) {\n");
fc.append(
"spot_factor = (1.0 - (1.0 - spot_factor) * 1.0/(1.0 - cos( radians( uSpotCutoffAngle")
.append(i)
.append("))));\n");
fc.append("spot_factor = pow(spot_factor, uSpotFalloff")
.append(i)
.append("* 1.0/spot_factor);\n");
fc.append("}\n");
fc.append("else {\n");
fc.append("spot_factor = 0.0;\n");
fc.append("}\n");
fc.append("L = vec3(L.y, L.x, L.z);\n");
fc.append("}\n");
} else if (light.getLightType() == ALight.DIRECTIONAL_LIGHT) {
vc.append("vAttenuation").append(i).append(" = 1.0;\n");
fc.append("L = normalize(-uLightDirection").append(i).append(");\n");
}
fc.append("NdotL = max(dot(N, L), 0.1);\n");
fc.append("power = uLightPower")
.append(i)
.append(" * NdotL * vAttenuation")
.append(i)
.append(";\n");
fc.append("intensity += power;\n");
if (light.getLightType() == ALight.SPOT_LIGHT)
fc.append("Kd.rgb += uLightColor").append(i).append(" * spot_factor;\n");
else fc.append("Kd.rgb += uLightColor").append(i).append(" * power;\n");
}
super.setShaders(
vertexShader.replace("%LIGHT_CODE%", vc.toString()),
fragmentShader.replace("%LIGHT_CODE%", fc.toString()));
}
