PulseStudio/VoxelEngine
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improve shadow map stability

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This commit is contained in:
MihailRis
2025-05-11 20:55:35 +03:00
parent b272d86619
commit ad0396b31e
7 changed files with 68 additions and 14 deletions
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res/shaders/effects/default.glsl
+1
View File
@@ -1,3 +1,4 @@
vec4 effect() {
//return vec4(vec3(pow(texture(u_shadows, v_uv).r, 5.0) * 1000.0), 1.0);
return texture(u_screen, v_uv);
}
res/shaders/lib/shadows.glsl
+14 -1
View File
@@ -1,10 +1,22 @@
#ifndef SHADOWS_GLSL_
#define SHADOWS_GLSL_
float sample_shadow(vec3 uv, vec3 xy) {
float color = 0.0;
vec3 off1 = vec3(1.3846153846) * xy;
vec3 off2 = vec3(3.2307692308) * xy;
color += texture(u_shadows, uv) * 0.2270270270;
color += texture(u_shadows, uv + (off1 / u_shadowsRes)) * 0.3162162162;
color += texture(u_shadows, uv - (off1 / u_shadowsRes)) * 0.3162162162;
color += texture(u_shadows, uv + (off2 / u_shadowsRes)) * 0.0702702703;
color += texture(u_shadows, uv - (off2 / u_shadowsRes)) * 0.0702702703;
return color;
}
float calc_shadow() {
float shadow = 1.0;
if (u_enableShadows) {
vec4 mpos = u_shadowsMatrix * vec4(a_modelpos.xyz + a_realnormal * 0.08, 1.0);
vec4 mpos = u_shadowsMatrix * vec4(a_modelpos.xyz + a_realnormal * 0.04, 1.0);
vec3 projCoords = mpos.xyz / mpos.w;
projCoords = projCoords * 0.5 + 0.5;
projCoords.z -= 0.0001;
@@ -22,6 +34,7 @@ float calc_shadow() {
shadow += texture(u_shadows, projCoords.xyz + offsets[i] / u_shadowsRes);
}
shadow /= 4;
//shadow = sample_shadow(projCoords, normalize(vec3(1.0, 1.0, 0.0)) * 0.5);
shadow = shadow * 0.5 + 0.5;
} else {
shadow = 0.5;