ld33_umonster: sdr/shadow-notex.p.glsl annotate

ld33_umonster

dynamic voxel field bounds

author	John Tsiombikas <nuclear@member.fsf.org>
date	Thu, 27 Aug 2015 01:58:26 +0300
parents	35349df5392d
children

rev	line source
nuclear@0	1 /* vi: set ft=glsl */
nuclear@3	2 uniform sampler2DShadow shadowmap;
nuclear@0	3
nuclear@0	4 varying vec3 vdir, ldir, normal;
nuclear@0	5 varying vec4 shadow_tc;
nuclear@0	6
nuclear@0	7 #define KD gl_FrontMaterial.diffuse.rgb
nuclear@0	8 #define KS gl_FrontMaterial.specular.rgb
nuclear@0	9 #define SPOW gl_FrontMaterial.shininess
nuclear@0	10
nuclear@0	11 void main()
nuclear@0	12 {
nuclear@3	13 float shadow = shadow2DProj(shadowmap, shadow_tc).x;
nuclear@3	14 shadow = min(shadow + 1.0 - step(0.0, shadow_tc.w), 1.0);
nuclear@0	15
nuclear@0	16 vec3 n = normalize(normal);
nuclear@3	17 vec3 v = normalize(vdir);
nuclear@0	18 vec3 l = normalize(ldir);
nuclear@0	19 vec3 h = normalize(l + v);
nuclear@0	20
nuclear@0	21 float ndotl = max(dot(n, l), 0.0);
nuclear@0	22 float ndoth = max(dot(n, h), 0.0);
nuclear@0	23
nuclear@0	24 vec3 diffuse = KD * gl_LightSource[0].diffuse.rgb * ndotl;
nuclear@3	25 vec3 specular = KS * gl_LightSource[0].specular.rgb * pow(ndoth, SPOW);
nuclear@0	26
nuclear@0	27 vec3 ambient = gl_LightModel.ambient.rgb * KD;
nuclear@0	28 gl_FragColor.rgb = ambient + (diffuse + specular) * shadow;
nuclear@0	29 gl_FragColor.a = gl_FrontMaterial.diffuse.a;
nuclear@0	30 }