import msp_interface;
-const bool use_shadow_map = false;
+struct ShadowParameters
+{
+ int enabled;
+ float darkness;
+ mat4 shd_world_matrix;
+ vec4 region;
+};
-#pragma MSP stage(vertex)
-void shadow_transform(vec4 eye_vertex)
+uniform ShadowMap
{
- out vec3 shadow_coord = (shd_eye_matrix*eye_vertex).xyz;
-}
+ ShadowParameters shadows[max_lights];
+};
+
+uniform sampler2DShadow shadow_map;
+
+layout(constant_id=auto) const bool use_shadow_map = false;
#pragma MSP stage(fragment)
-float get_shadow_factor(int index)
+virtual float get_shadow_factor(int index, vec4 world_pos)
{
if(use_shadow_map)
{
- float shadow_sample = texture(shadow_map, shadow_coord);
- return mix(1.0, shadow_sample, shadow_darkness);
+ if(shadows[index].enabled==0)
+ return 1.0;
+
+ vec3 shadow_coord = (shadows[index].shd_world_matrix*world_pos).xyz;
+ if(shadow_coord.x<0 || shadow_coord.x>1 || shadow_coord.y<0 || shadow_coord.y>1)
+ return 1.0;
+
+ vec4 region = shadows[index].region;
+ float shadow_sample = texture(shadow_map, shadow_coord*vec3(region.zw, 1.0)+vec3(region.xy, 0.0));
+ return mix(1.0, shadow_sample, shadows[index].darkness);
}
else
return 1.0;