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WIP: EEVEE-Next: Add Volume Shadow for environment lighting #120510

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Clément Foucault wants to merge 1 commits from fclem/blender:eevee-next-volume-environment-shadow into main
pull from: fclem/blender:eevee-next-volume-environment-shadow
merge into: blender:main

When changing the target branch, be careful to rebase the branch in your fork to match. See documentation.
Conversation 0 Commits 1 Files Changed 2 +9 -2
2 changed files with 9 additions and 2 deletions
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3
source/blender/draw/engines/eevee_next/shaders/eevee_volume_lib.glsl
View File

@ -221,8 +221,7 @@ vec3 volume_light(LightData light, const bool is_directional, LightVector lv)
#define VOLUMETRIC_SHADOW_MAX_STEP 128.0
vec3 volume_shadow(
LightData ld, const bool is_directional, vec3 P, LightVector lv, sampler3D extinction_tx)
vec3 volume_shadow(const bool is_directional, vec3 P, LightVector lv, sampler3D extinction_tx)
{
#if defined(VOLUME_SHADOW)
if (uniform_buf.volumes.shadow_steps == 0) {

8
source/blender/draw/engines/eevee_next/shaders/eevee_volume_scatter_comp.glsl
View File

@ -83,6 +83,14 @@ void main()
vec3 light_scattering = spherical_harmonics_dot(volume_radiance_sh, phase_sh).xyz;
/* Environment volume shadow. */
vec2 rand_2d = pcg4d(vec4(P, sampling_rng_1D_get(SAMPLING_SHADOW_U))).xy;
LightVector lv;
lv.L = normalize(sample_sphere(rand_2d) + V * s_anisotropy);
lv.dist = 1.0;
light_scattering = spherical_harmonics_evaluate(lv.L, volume_radiance_sh);
light_scattering *= volume_shadow(true, P, lv, extinction_tx);
LIGHT_FOREACH_BEGIN_DIRECTIONAL (light_cull_buf, l_idx) {
light_scattering += volume_scatter_light_eval(true, P, V, l_idx, s_anisotropy);
}