eu07/maszyna
17
0
Fork 0
mirror of https://github.com/MaSzyna-EU07/maszyna.git synced 2026-11-06 17:28:36 +01:00
Code Issues 150 Wiki Activity

Vulkan ray tracing: trace only visible reflections, sun shadow from the shadow map, foliage switch and timings

Browse Source
This commit is contained in:
Hirek
2026-10-25 16:09:19 +01:00
parent 08f4f6ed60
commit e201c83825
6 changed files with 87 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
shaders/vk14/light_common.glsl
View File

@@ -696,18 +696,21 @@ vec3 reflection_surroundings(vec3 fragnormal, float roughness)
#include "rt_reflections.glsl"
#endif
// the least weight of the reflection of the surroundings (its specular colour times its share) a surface traces the scene for
// the least weight of the reflection of the surroundings (its specular colour times its share) a surface traces the scene for,
// and the least weight of what the screen left to the ray tracing (the weight times the share the screen didn't give) a ray is
// traced for: below it the sky and the ground of the environment map do
const float REFLECTION_SCENE_WEIGHT = 0.004;
const float REFLECTION_RAY_WEIGHT = 0.012;
// the reflection of the scene in a surface of the given perceptual roughness: the colour times how much of the reflection the
// scene gives (rgb), and that share (a), the rest is left to reflection_surroundings()
vec4 reflection_scene(vec3 fragnormal, float roughness)
vec4 reflection_scene(vec3 fragnormal, float roughness, float weight)
{
vec3 direction = normalize(reflect(f_pos.xyz, fragnormal));
vec4 result = ssr_trace(f_pos.xyz, normalize(f_normal), direction, roughness);
#ifdef REFLECTION_RAYS_ACTIVE
// what the screen doesn't hold is traced through the scenery (shaders/vk14/rt_reflections.glsl)
if ((result.a < 0.99) && (ssr_params2.z > 0.0) && (roughness <= ssr_params.z))
if ((weight * (1.0 - result.a) > REFLECTION_RAY_WEIGHT) && (ssr_params2.z > 0.0) && (roughness <= ssr_params.z))
{
vec4 traced = rt_trace(f_pos.xyz, normalize(f_normal), direction, roughness);
result.rgb += traced.rgb * (1.0 - result.a);
@@ -801,8 +804,9 @@ vec3 shade_surface(vec3 fragcolor, vec3 fragnormal, vec3 texturecolor, float ref
if (!matte)
{
envcolor = reflection_surroundings(fragnormal, env_roughness);
if (((ssr_params.x > 0.0) || (ssr_params2.z > 0.0)) && (cubemap_share * dot(cubemap_spec, vec3(1.0 / 3.0)) > REFLECTION_SCENE_WEIGHT))
scenecolor = reflection_scene(fragnormal, env_roughness);
float sceneweight = cubemap_share * dot(cubemap_spec, vec3(1.0 / 3.0));
if (((ssr_params.x > 0.0) || (ssr_params2.z > 0.0)) && (sceneweight > REFLECTION_SCENE_WEIGHT))
scenecolor = reflection_scene(fragnormal, env_roughness, sceneweight);
}
if (lights_count == 0U)