X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fscene_vertex_blend.h;h=1a9c7d2a7ae2768e74fe245a53b530a82cce684e;hb=343d594b37f42a94f220a5089c9db36da9da3ab4;hp=1f3946f60d575bf62e8dc2bb3833c3b782d0ece4;hpb=aa4c26eae2208872824e0eb5b71bc05c16d43242;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/scene_vertex_blend.h b/shaders/scene_vertex_blend.h
index 1f3946f..1a9c7d2 100644
--- a/shaders/scene_vertex_blend.h
+++ b/shaders/scene_vertex_blend.h
@@ -106,6 +106,13 @@ static struct vg_shader _shader_scene_vertex_blend = {
 "   return texture( g_world_depth, depth_coord ).r;\n"
 "}\n"
 "\n"
+"float world_water_depth( vec3 pos )\n"
+"{\n"
+"   vec2 depth_coord = (pos.xz - g_depth_bounds.xy) * g_depth_bounds.zw; \n"
+"   float ref_depth = g_water_plane.y*g_water_plane.w;\n"
+"   return texture( g_world_depth, depth_coord ).g - ref_depth;\n"
+"}\n"
+"\n"
 "float shadow_sample( vec3 vdir )\n"
 "{\n"
 "   vec3 sample_pos = aWorldCo + vdir;\n"