X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fscene_water_fast.h;h=6e19ac3424274471f5ff539891d59a42fb6500eb;hb=343d594b37f42a94f220a5089c9db36da9da3ab4;hp=d3a7ac4c64a0ff04c73711cfbaeae57504eafaf1;hpb=192990d6d24e53749ca046fef808a63cf162ab8a;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/scene_water_fast.h b/shaders/scene_water_fast.h
index d3a7ac4..6e19ac3 100644
--- a/shaders/scene_water_fast.h
+++ b/shaders/scene_water_fast.h
@@ -111,6 +111,13 @@ static struct vg_shader _shader_scene_water_fast = {
 "   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"
@@ -295,7 +302,7 @@ static struct vg_shader _shader_scene_water_fast = {
 "   compute_motion_vectors();\n"
 "\n"
 "   // Surface colour composite\n"
-"   float depthvalue = clamp( -world_depth_sample( aCo )*(1.0/25.0), 0.0, 1.0 );\n"
+"   float depthvalue = clamp( -world_water_depth( aCo )*(1.0/25.0), 0.0, 1.0 );\n"
 "\n"
 "   vec2 world_coord = aCo.xz * 0.008;\n"
 "   vec4 time_offsets = vec4( uTime ) * vec4( 0.008, 0.006, 0.003, 0.03 );\n"