Merge pull request #26005 from clayjohn/gles2_shadow_color

Added shadow_color property to gles2

drivers/gles2/rasterizer_scene_gles2.cpp

@@ -1790,6 +1790,9 @@ void RasterizerSceneGLES2::_setup_light(LightInstance *light, ShadowAtlas *shado
 	Color color = light_ptr->color * sign * energy * Math_PI;
 	state.scene_shader.set_uniform(SceneShaderGLES2::LIGHT_COLOR, color);
 
+	Color shadow_color = light_ptr->shadow_color.to_linear();
+	state.scene_shader.set_uniform(SceneShaderGLES2::SHADOW_COLOR, shadow_color);
+
 	//specific parameters
 
 	switch (light_ptr->type) {

drivers/gles2/shaders/scene.glsl

@@ -158,6 +158,7 @@ varying highp vec3 specular_interp;
 
 // general for all lights
 uniform highp vec4 light_color;
+uniform highp vec4 shadow_color;
 uniform highp float light_specular;
 
 // directional
@@ -912,6 +913,7 @@ uniform highp vec3 light_direction; //may be used by fog, so leave here
 //done in fragment
 // general for all lights
 uniform highp vec4 light_color;
+uniform highp vec4 shadow_color;
 uniform highp float light_specular;
 
 // directional
@@ -1680,7 +1682,7 @@ FRAGMENT_SHADER_CODE
 
 		float shadow = sample_shadow(light_shadow_atlas, splane);
 
-		light_att *= shadow;
+		light_att *= mix(shadow_color.rgb, vec3(1.0), shadow);
 	}
 #endif
 
@@ -1757,7 +1759,7 @@ FRAGMENT_SHADER_CODE
 			shadow_att = mix(shadow_att, shadow_att2, pssm_blend);
 		}
 #endif
-		light_att *= shadow_att;
+		light_att *= mix(shadow_color.rgb, vec3(1.0), shadow_att);
 	}
 
 #endif //LIGHT_USE_PSSM4
@@ -1798,7 +1800,7 @@ FRAGMENT_SHADER_CODE
 			shadow_att = mix(shadow_att, shadow_att2, pssm_blend);
 		}
 #endif
-		light_att *= shadow_att;
+		light_att *= mix(shadow_color.rgb, vec3(1.0), shadow_att);
 	}
 
 #endif //LIGHT_USE_PSSM2
@@ -1905,7 +1907,7 @@ FRAGMENT_SHADER_CODE
 			}
 #endif
 
-			light_att *= shadow;
+			light_att *= mix(shadow_color.rgb, vec3(1.0), shadow);
 		}
 	}
 #endif //use vertex lighting
@@ -1953,7 +1955,7 @@ FRAGMENT_SHADER_CODE
 		highp vec4 splane = shadow_coord;
 
 		float shadow = sample_shadow(light_shadow_atlas, splane);
-		light_att *= shadow;
+		light_att *= mix(shadow_color.rgb, vec3(1.0), shadow);
 	}
 #endif