mirror/OpenSpace
1
0
Fork 0
mirror of https://github.com/OpenSpace/OpenSpace.git synced 2026-01-05 19:19:39 -06:00
Code Issues Packages Projects Releases Wiki Activity

slightly smooth out shadows via PCF

Browse Source
This commit is contained in:
Joakim Kilby
2023-10-26 10:51:46 +02:00
parent dbed4f3ddb
commit 63a28cbd47
1 changed files with 16 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
modules/globebrowsing/shaders/renderer_fs.glsl
View File

@@ -300,16 +300,26 @@ Fragment getFragment() {
#endif
#if USE_DEPTHMAP_SHADOWS && nDepthMaps > 0
float contrib = 0.f;
float shadow = 1.f;
float intensity = 1.f;
const float bias = 0.005;
const int samples = 7;
const float norm = pow(2.f * samples + 1.f, 2.f);
for (int i = 0; i < nDepthMaps; ++i) {
float contrib = 1.f;
vec2 ssz = 1.f / textureSize(light_depth_maps[i], 0);
vec3 coords = 0.5 + 0.5 * positions_lightspace[i].xyz / positions_lightspace[i].w;
shadow = min(shadow, texture(light_depth_maps[i], coords.xyz, bias));
contrib += float(texture(light_depth_maps[i], coords.xyz, bias) < 1.f);
for (int x = -samples; x <= samples; ++x) {
for (int y = -samples; y <= samples; ++y) {
float shadow_sample = texture(light_depth_maps[i], coords.xyz + vec3(x * ssz.x, y * ssz.y, 1), bias);
contrib += shadow_sample;
}
}
intensity = min(intensity, contrib / norm);
}
float ambient = .2f;
frag.color.xyz *= pow(ambient + (1.f - ambient) * shadow, contrib);
float ambient = .1f;
frag.color.xyz *= (ambient + (1.f - ambient) * intensity);
#endif // USE_DEPTHMAP_SHADOWS && nDepthMaps > 0
frag.color.a *= opacity;