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soft shadows optimization

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Пелипенко Иван
2023-02-22 15:48:50 +03:00
parent 91bc31e7db
commit 7455a7341c
6 changed files with 58 additions and 40 deletions
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29
shaders/ds_light.glsl
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@@ -172,7 +172,7 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
spot *= light_map_pix.a;
#endif
if (int(round(qgl_light_parameter[index].flags)) == 1 && bitfieldExtract(flags, 3, 1) == 1) {
if (int(round(qgl_light_parameter[index].flags)) == 1 && bitfieldExtract(flags, 3, 1) == 1 && (spot > 1E-4)) {
vec3 odir = -(view_mat * ldir);
int layer = index - lights_start;
float shadow = 0.;
@@ -187,13 +187,15 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
const int gm_size = 3;
for (int i = -gm_size; i <= gm_size; ++i) {
for (int j = -gm_size; j <= gm_size; ++j) {
depth = min(depth, textureOffset(tex_depths_cone, vec3(shp.xy, layer), ivec2(i, j)).r);
depth = min(depth, textureOffset(tex_depths_cone, vec3(shp.xy, layer), ivec2(i, j)).x);
}
}
depth = 1 / (1 - depth) - 1 + z_near;
float dz = max(0, shp.z - depth);
float ds = qgl_light_parameter[index].size * dz / (ldist - dz);
//qgl_FragColor.rgb = vec3(0);
//qgl_FragColor.rgb = vec3(-texture(tex_depths_cone, vec3(shp.xy,layer)).r*1000);
//qgl_FragColor.rgb = vec3(depth);
//qgl_FragColor.rgb = vec3(dz);
#else
float depth = 1;
const int gm_size = 3;
@@ -207,17 +209,18 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
depth = 1 / (1 - depth) - 1 + z_near;
float dz = max(0, ldist - depth);
float ds = qgl_light_parameter[index].size * dz / (ldist - dz);
//qgl_FragColor.rgb = vec3(dz/5);
//float ds = (ldist / 2.) / qgl_light_parameter[index].size;
//qgl_FragColor.rgb = vec3(ds);
#endif
int samples = clamp(1, soft_shadows_samples, int(round(ds * float(soft_shadows_samples))));
vds = ds * bn.xyz;
vds2 = ds * bn2.xyz;
vec2 so;
ivec2 sotc = tc;
noise2init(vec2(hash(ivec2(tc.x * 2 + 1, tc.y)), hash(ivec2(tc.x, (tc.y * 2 + 1)))));
for (int i = 1; i <= soft_shadows_samples; ++i) {
for (int i = 1; i <= samples; ++i) {
so = noise2();
#ifdef SPOT
//vec4 nc = texelFetch(tex_noise, sotc % noise_size, 0);
@@ -239,7 +242,7 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
#endif
}
spot *= min(1, 2. * shadow / soft_shadows_samples);
spot *= min(1, 2. * shadow / samples);
//spot *= shadow / soft_shadows_samples;
//spot *= shadow / soft_shadows_samples + 1;
@@ -340,20 +343,22 @@ void main(void) {
}
qgl_FragColor = vec4(res_col, alpha);
//qgl_FragColor.a = alpha;
//qgl_FragColor.rgb = vec3(bn.z);
//qgl_FragColor.rgba = vec4(vec3(0), 0.5);
#ifdef SPOT
vec4 shp = mapScreenToShadow(0, vec3(0));
shp.xy /= shp.w;
float depth = texture(tex_depths_cone, vec3(shp.xy, 0)).r;
depth = 1 / (1 - depth) - 1 + z_near;
float dz = max(0, shp.z - depth);
//vec4 shp = mapScreenToShadow(0, vec3(0));
//shp.xy /= shp.w;
//float depth = texture(tex_depths_cone, vec3(shp.xy, 0)).r;
////depth = 1 / (1 - depth) - 1 + z_near;
//float dz = max(0, shp.z - depth);
//shp.z -= bias;
//for (int xi = -2; xi <= 2; ++xi) {
// for (int yi = -2; yi <= 2; ++yi) {
//qgl_FragColor.rgb = vec3(step(shp.z, texture(tex_shadows_cone, vec3(shp.xy, 0)).r));
//qgl_FragColor.r = texture(tex_shadows_cone, vec3(0)).r;
//qgl_FragColor.gb = vec2(1);
//qgl_FragColor.rgb = vec3(abs(depth) + 1);
//float _d = texture(tex_depths_cone, vec3(shp.xy, 0)).r;
//_d = 1 / (1 - _d) - 1 + z_near;
//qgl_FragColor.rgb = vec3(texelFetch(tex_noise, tc % noise_size, 0).b);//vec4(res_col, alpha);