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Nishi 2026-02-01 08:09:18 +09:00
commit ae67600abf
Signed by: nishi
GPG key ID: 27EF69B208EB9343
11 changed files with 178 additions and 94 deletions
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14
engine/data/shader/shadow.fs
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@ -33,27 +33,23 @@ vec4 PhongShading(void)
}
float ShadowCoef(void){
vec4 shadow_coord = vShadowCoord / vShadowCoord.w;
vec3 shadow_coord = vShadowCoord.xyz / vShadowCoord.w;
float view = shadow_coord.z;
vec2 d[4];
float light = 1.0;
float shadow_coef = 1.0;
int i;
if(shadow_coord.z > 1.0) return 1.0;
d[0] = vec2(-0.94201624, -0.39906216);
d[1] = vec2(0.94558609, -0.76890725);
d[2] = vec2(-0.094184101, -0.92938870);
d[3] = vec2(0.34495938, 0.29387760);
light = texture2D(depth_texture, shadow_coord.xy).z;
for(i = 0; i < 4; i++){
vec2 p = shadow_coord.xy + d[i] / 700.0;
if(p.x < 0.0) continue;
if(p.y < 0.0) continue;
if(p.x > 1.0) continue;
if(p.y > 1.0) continue;
if(p.x < 0.0 || p.y < 0.0 || p.x > 1.0 || p.y > 1.0) shadow_coef += 1.0;
if(texture2D(depth_texture, p).z < view){
shadow_coef -= 0.2;
@ -64,7 +60,7 @@ float ShadowCoef(void){
}
void main(void){
vec4 c = enable_lighting > 0.5 ? PhongShading() : vColor;
vec4 c = PhongShading();
vec4 ambient = gl_LightSource[0].ambient;
float shadow_coef = ShadowCoef();