shader vacuuming

[carveJwlIkooP6JGAAIwe30JlM.git] / shaders / common_world.glsl

diff --git a/shaders/common_world.glsl b/shaders/common_world.glsl
index b5c79dfac683779b4ddfe6977f7c20c823b929f5..45e12dff48267ba71c814a07a3272ea3eb29c339 100644 (file)
--- a/shaders/common_world.glsl
+++ b/shaders/common_world.glsl
@@ -25,6 +25,13 @@ float world_depth_sample( vec3 pos )
    return texture( g_world_depth, depth_coord ).r;
 }
 
+float world_water_depth( vec3 pos )
+{
+   vec2 depth_coord = (pos.xz - g_depth_bounds.xy) * g_depth_bounds.zw; 
+   float ref_depth = g_water_plane.y*g_water_plane.w;
+   return texture( g_world_depth, depth_coord ).g - ref_depth;
+}
+
 float shadow_sample( vec3 vdir )
 {
    vec3 sample_pos = aWorldCo + vdir;