Remove unused `shadow_color` property from Light3D

This shadow color property was no longer effective since the shaders
were optimized to improve occupancy.

4 files changed, 1 insertions, 25 deletions

diff --git a/servers/rendering/renderer_rd/shaders/light_data_inc.glsl b/servers/rendering/renderer_rd/shaders/light_data_inc.glsl
index 52787bb204..61c8488a05 100644
--- a/servers/rendering/renderer_rd/shaders/light_data_inc.glsl
+++ b/servers/rendering/renderer_rd/shaders/light_data_inc.glsl
@@ -76,10 +76,6 @@ struct DirectionalLightData {
 	highp mat4 shadow_matrix2;
 	highp mat4 shadow_matrix3;
 	highp mat4 shadow_matrix4;
-	mediump vec4 shadow_color1;
-	mediump vec4 shadow_color2;
-	mediump vec4 shadow_color3;
-	mediump vec4 shadow_color4;
 	highp vec2 uv_scale1;
 	highp vec2 uv_scale2;
 	highp vec2 uv_scale3;
diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl
index a1cf1d3c04..7b0d3cbe61 100644
--- a/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl
+++ b/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl
@@ -1124,7 +1124,6 @@ void main() {
 				float depth_z = -vertex.z;
 
 				vec4 pssm_coord;
-				vec3 shadow_color = vec3(0.0);
 				vec3 light_dir = directional_lights.data[i].direction;
 
 #define BIAS_FUNC(m_var, m_idx)                                                                                                                                       \
@@ -1150,9 +1149,6 @@ void main() {
 					} else {
 						shadow = sample_directional_pcf_shadow(directional_shadow_atlas, scene_data.directional_shadow_pixel_size * directional_lights.data[i].soft_shadow_scale, pssm_coord);
 					}
-
-					shadow_color = directional_lights.data[i].shadow_color1.rgb;
-
 				} else if (depth_z < directional_lights.data[i].shadow_split_offsets.y) {
 					vec4 v = vec4(vertex, 1.0);
 
@@ -1170,8 +1166,6 @@ void main() {
 					} else {
 						shadow = sample_directional_pcf_shadow(directional_shadow_atlas, scene_data.directional_shadow_pixel_size * directional_lights.data[i].soft_shadow_scale, pssm_coord);
 					}
-
-					shadow_color = directional_lights.data[i].shadow_color2.rgb;
 				} else if (depth_z < directional_lights.data[i].shadow_split_offsets.z) {
 					vec4 v = vec4(vertex, 1.0);
 
@@ -1189,9 +1183,6 @@ void main() {
 					} else {
 						shadow = sample_directional_pcf_shadow(directional_shadow_atlas, scene_data.directional_shadow_pixel_size * directional_lights.data[i].soft_shadow_scale, pssm_coord);
 					}
-
-					shadow_color = directional_lights.data[i].shadow_color3.rgb;
-
 				} else {
 					vec4 v = vec4(vertex, 1.0);
 
@@ -1209,12 +1200,9 @@ void main() {
 					} else {
 						shadow = sample_directional_pcf_shadow(directional_shadow_atlas, scene_data.directional_shadow_pixel_size * directional_lights.data[i].soft_shadow_scale, pssm_coord);
 					}
-
-					shadow_color = directional_lights.data[i].shadow_color4.rgb;
 				}
 
 				if (directional_lights.data[i].blend_splits) {
-					vec3 shadow_color_blend = vec3(0.0);
 					float pssm_blend;
 					float shadow2;
 
@@ -1235,7 +1223,6 @@ void main() {
 						}
 
 						pssm_blend = smoothstep(0.0, directional_lights.data[i].shadow_split_offsets.x, depth_z);
-						shadow_color_blend = directional_lights.data[i].shadow_color2.rgb;
 					} else if (depth_z < directional_lights.data[i].shadow_split_offsets.y) {
 						vec4 v = vec4(vertex, 1.0);
 						BIAS_FUNC(v, 2)
@@ -1253,8 +1240,6 @@ void main() {
 						}
 
 						pssm_blend = smoothstep(directional_lights.data[i].shadow_split_offsets.x, directional_lights.data[i].shadow_split_offsets.y, depth_z);
-
-						shadow_color_blend = directional_lights.data[i].shadow_color3.rgb;
 					} else if (depth_z < directional_lights.data[i].shadow_split_offsets.z) {
 						vec4 v = vec4(vertex, 1.0);
 						BIAS_FUNC(v, 3)
@@ -1271,7 +1256,6 @@ void main() {
 						}
 
 						pssm_blend = smoothstep(directional_lights.data[i].shadow_split_offsets.y, directional_lights.data[i].shadow_split_offsets.z, depth_z);
-						shadow_color_blend = directional_lights.data[i].shadow_color4.rgb;
 					} else {
 						pssm_blend = 0.0; //if no blend, same coord will be used (divide by z will result in same value, and already cached)
 					}
@@ -1279,7 +1263,6 @@ void main() {
 					pssm_blend = sqrt(pssm_blend);
 
 					shadow = mix(shadow, shadow2, pssm_blend);
-					shadow_color = mix(shadow_color, shadow_color_blend, pssm_blend);
 				}
 
 				shadow = mix(shadow, 1.0, smoothstep(directional_lights.data[i].fade_from, directional_lights.data[i].fade_to, vertex.z)); //done with negative values for performance
diff --git a/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl b/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl
index 5bda15236c..b95fad650e 100644
--- a/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl
+++ b/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl
@@ -70,8 +70,6 @@ struct Light {
 	float cos_spot_angle;
 	float inv_spot_attenuation;
 	float radius;
-
-	vec4 shadow_color;
 };
 
 layout(set = 0, binding = 9, std140) buffer restrict readonly Lights {
diff --git a/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl b/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl
index 7a0cea421e..347fd13b28 100644
--- a/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl
+++ b/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl
@@ -382,7 +382,6 @@ void main() {
 				float depth_z = -view_pos.z;
 
 				vec4 pssm_coord;
-				vec3 shadow_color = directional_lights.data[i].shadow_color1.rgb;
 				vec3 light_dir = directional_lights.data[i].direction;
 				vec4 v = vec4(view_pos, 1.0);
 				float z_range;
@@ -413,7 +412,7 @@ void main() {
 
 				shadow = mix(shadow, 1.0, smoothstep(directional_lights.data[i].fade_from, directional_lights.data[i].fade_to, view_pos.z)); //done with negative values for performance
 
-				shadow_attenuation = mix(shadow_color, vec3(1.0), shadow);
+				shadow_attenuation = mix(vec3(0.0), vec3(1.0), shadow);
 			}
 
 			total_light += shadow_attenuation * directional_lights.data[i].color * directional_lights.data[i].energy * henyey_greenstein(dot(normalize(view_pos), normalize(directional_lights.data[i].direction)), params.phase_g);