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Code Releases Wiki Activity

Several GI related optimizations and fixes

Browse Source 
-SDFGI direct light is done over many frames
-SDFGI Changed settings for rays/frame
-SDFGI Misc optimizations
-SDFGI Bug fix on probe scroll

-GIProbe was not working, got it to work again
-GIProbe dynamic objects were not working, fixed

-Added a half size GI option.
This commit is contained in:
reduz
2021-01-22 20:50:24 -03:00
parent 6ddfc8e718
commit 6fe342478b
21 changed files with 490 additions and 263 deletions
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107
servers/rendering/renderer_rd/shaders/sdfgi_debug.glsl
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@@ -97,6 +97,8 @@ void main() {
float blend = 0.0;
#if 1
// No interpolation
vec3 inv_dir = 1.0 / ray_dir;
float rough = 0.5;
@@ -161,114 +163,11 @@ void main() {
hit_light *= (dot(max(vec3(0.0), (hit_normal * hit_aniso0)), vec3(1.0)) + dot(max(vec3(0.0), (-hit_normal * hit_aniso1)), vec3(1.0)));
if (blend > 0.0) {
light = mix(light, hit_light, blend);
blend = 0.0;
} else {
light = hit_light;
//process blend
float blend_from = (float(params.probe_axis_size - 1) / 2.0) - 2.5;
float blend_to = blend_from + 2.0;
vec3 cam_pos = params.cam_transform[3].xyz - cascades.data[i].offset;
cam_pos *= cascades.data[i].to_cell;
pos += ray_dir * min(advance, max_advance);
vec3 inner_pos = pos - cam_pos;
inner_pos = inner_pos * float(params.probe_axis_size - 1) / params.grid_size.x;
float len = length(inner_pos);
inner_pos = abs(normalize(inner_pos));
len *= max(inner_pos.x, max(inner_pos.y, inner_pos.z));
if (len >= blend_from) {
blend = smoothstep(blend_from, blend_to, len);
pos /= cascades.data[i].to_cell;
pos += cascades.data[i].offset;
ray_pos = pos;
hit = false; //continue trace for blend
continue;
}
}
light = hit_light;
break;
}
light = mix(light, vec3(0.0), blend);
#else
vec3 inv_dir = 1.0 / ray_dir;
bool hit = false;
vec4 light_accum = vec4(0.0);
float blend_size = (params.grid_size.x / float(params.probe_axis_size - 1)) * 0.5;
float radius_sizes[MAX_CASCADES];
for (uint i = 0; i < params.max_cascades; i++) {
radius_sizes[i] = (1.0 / cascades.data[i].to_cell) * (params.grid_size.x * 0.5 - blend_size);
}
float max_distance = radius_sizes[params.max_cascades - 1];
float advance = 0;
while (advance < max_distance) {
for (uint i = 0; i < params.max_cascades; i++) {
if (advance < radius_sizes[i]) {
vec3 pos = (ray_pos + ray_dir * advance) - cascades.data[i].offset;
pos *= cascades.data[i].to_cell * pos_to_uvw;
float distance = texture(sampler3D(sdf_cascades[i], linear_sampler), pos).r * 255.0 - 1.0;
vec4 hit_light = vec4(0.0);
if (distance < 1.0) {
hit_light.a = max(0.0, 1.0 - distance);
hit_light.rgb = texture(sampler3D(light_cascades[i], linear_sampler), pos).rgb;
hit_light.rgb *= hit_light.a;
}
distance /= cascades.data[i].to_cell;
if (i < (params.max_cascades - 1)) {
pos = (ray_pos + ray_dir * advance) - cascades.data[i + 1].offset;
pos *= cascades.data[i + 1].to_cell * pos_to_uvw;
float distance2 = texture(sampler3D(sdf_cascades[i + 1], linear_sampler), pos).r * 255.0 - 1.0;
vec4 hit_light2 = vec4(0.0);
if (distance2 < 1.0) {
hit_light2.a = max(0.0, 1.0 - distance2);
hit_light2.rgb = texture(sampler3D(light_cascades[i + 1], linear_sampler), pos).rgb;
hit_light2.rgb *= hit_light2.a;
}
float prev_radius = i == 0 ? 0.0 : radius_sizes[i - 1];
float blend = (advance - prev_radius) / (radius_sizes[i] - prev_radius);
distance2 /= cascades.data[i + 1].to_cell;
hit_light = mix(hit_light, hit_light2, blend);
distance = mix(distance, distance2, blend);
}
light_accum += hit_light;
advance += distance;
break;
}
}
if (light_accum.a > 0.98) {
break;
}
}
light = light_accum.rgb / light_accum.a;
#endif
imageStore(screen_buffer, screen_pos, vec4(linear_to_srgb(light), 1.0));