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Apply sun scatter from lights with shadows in compatibility

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This commit is contained in:
Kaleb Reid 2025-06-19 14:22:14 -07:00
parent 06827c91c6
commit c20ab940aa
3 changed files with 27 additions and 16 deletions
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34
drivers/gles3/shaders/scene.glsl
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@ -15,6 +15,7 @@ DISABLE_LIGHT_SPOT = false
DISABLE_REFLECTION_PROBE = true
DISABLE_FOG = false
USE_DEPTH_FOG = false
USE_SUN_SCATTER = false
USE_RADIANCE_MAP = true
USE_LIGHTMAP = false
USE_SH_LIGHTMAP = false
@ -188,7 +189,7 @@ struct SceneData {
mediump vec4 ambient_light_color_energy;
mediump float ambient_color_sky_mix;
float pad2;
uint directional_shadow_count;
float emissive_exposure_normalization;
bool use_ambient_light;
@ -1130,7 +1131,7 @@ struct SceneData {
mediump vec4 ambient_light_color_energy;
mediump float ambient_color_sky_mix;
float pad2;
uint directional_shadow_count;
float emissive_exposure_normalization;
bool use_ambient_light;
@ -1205,7 +1206,7 @@ in vec3 additive_specular_light_interp;
#endif // USE_VERTEX_LIGHTING
// Directional light data.
#if !defined(DISABLE_LIGHT_DIRECTIONAL) || (!defined(ADDITIVE_OMNI) && !defined(ADDITIVE_SPOT))
#if !defined(DISABLE_LIGHT_DIRECTIONAL) || (!defined(ADDITIVE_OMNI) && !defined(ADDITIVE_SPOT)) || defined(USE_SUN_SCATTER)
struct DirectionalLightData {
mediump vec3 direction;
@ -1227,7 +1228,7 @@ layout(std140) uniform DirectionalLights { // ubo:7
uniform highp sampler2DShadow directional_shadow_atlas; // texunit:-3
#endif // defined(USE_ADDITIVE_LIGHTING) && (!defined(ADDITIVE_OMNI) && !defined(ADDITIVE_SPOT))
#endif // !DISABLE_LIGHT_DIRECTIONAL
#endif // !DISABLE_LIGHT_DIRECTIONAL || USE_SUN_SCATTER
// Omni and spot light data.
#if !defined(DISABLE_LIGHT_OMNI) || !defined(DISABLE_LIGHT_SPOT) || defined(ADDITIVE_OMNI) || defined(ADDITIVE_SPOT)
@ -1770,18 +1771,21 @@ vec4 fog_process(vec3 vertex) {
*/
#endif
#ifndef DISABLE_LIGHT_DIRECTIONAL
if (scene_data_block.data.fog_sun_scatter > 0.001) {
vec4 sun_scatter = vec4(0.0);
float sun_total = 0.0;
vec3 view = normalize(vertex);
for (uint i = uint(0); i < scene_data_block.data.directional_light_count; i++) {
vec3 light_color = directional_lights[i].color * directional_lights[i].energy;
float light_amount = pow(max(dot(view, directional_lights[i].direction), 0.0), 8.0);
fog_color += light_color * light_amount * scene_data_block.data.fog_sun_scatter;
}
#ifdef USE_SUN_SCATTER
vec4 sun_scatter = vec4(0.0);
float sun_total = 0.0;
vec3 view = normalize(vertex);
for (uint i = uint(0); i < scene_data_block.data.directional_light_count; i++) {
vec3 light_color = directional_lights[i].color * directional_lights[i].energy;
float light_amount = pow(max(dot(view, directional_lights[i].direction), 0.0), 8.0);
fog_color += light_color * light_amount * scene_data_block.data.fog_sun_scatter;
}
#endif // !DISABLE_LIGHT_DIRECTIONAL
for (uint i = uint(MAX_DIRECTIONAL_LIGHT_DATA_STRUCTS) - uint(scene_data_block.data.directional_shadow_count); i < uint(MAX_DIRECTIONAL_LIGHT_DATA_STRUCTS); i++) {
vec3 light_color = directional_lights[i].color * directional_lights[i].energy;
float light_amount = pow(max(dot(view, directional_lights[i].direction), 0.0), 8.0);
fog_color += light_color * light_amount * scene_data_block.data.fog_sun_scatter;
}
#endif // USE_SUN_SCATTER
float fog_amount = 0.0;