Impostors: continue work on depth, getting closer

1 files changed, 9 insertions, 2 deletions

diff --git a/DepthBlit.shader b/DepthBlit.shader
index 4094fe5..b2a512f 100644
--- a/DepthBlit.shader
+++ b/DepthBlit.shader
@@ -20,7 +20,7 @@ Shader "Hidden/yum_food/DepthBlit"
 
             #include "UnityCG.cginc"
 
-            sampler2D _DepthTex;
+            UNITY_DECLARE_DEPTH_TEXTURE(_DepthTex);
             float _Near;
             float _Far;
 
@@ -41,7 +41,14 @@ Shader "Hidden/yum_food/DepthBlit"
             float4 frag(v2f i) : SV_Target
             {
                 // 0 = near clip plane, 1 = far clip plane.
-                return tex2D(_DepthTex, i.uv).r;
+                float rawDepth = SAMPLE_DEPTH_TEXTURE(_DepthTex, i.uv);
+                // Unity uses reversed-Z on most platforms: 1 at near, 0 at far.
+                // Flip to get linear 0-1 (0=near, 1=far) for orthographic cameras.
+                #if defined(UNITY_REVERSED_Z)
+                    return 1.0 - rawDepth;
+                #else
+                    return rawDepth;
+                #endif
             }
             ENDCG
         }