From 8b51bc5b0bf573c2fb8076873fec3562c0f5c9df Mon Sep 17 00:00:00 2001
From: "Unknown W. Brackets" <checkins@unknownbrackets.org>
Date: Sun, 7 Feb 2016 22:42:47 -0800
Subject: [PATCH] Fix debugging and depth packing with old depth.

Which means, OpenGL in general right now.
---
 GPU/Common/GPUStateUtils.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/GPU/Common/GPUStateUtils.cpp b/GPU/Common/GPUStateUtils.cpp
index 98a4e2bd0..662ccf912 100644
--- a/GPU/Common/GPUStateUtils.cpp
+++ b/GPU/Common/GPUStateUtils.cpp
@@ -531,6 +531,10 @@ float ToScaledDepth(u16 z) {
 }
 
 float FromScaledDepth(float z) {
+	if (!gstate_c.Supports(GPU_SUPPORTS_ACCURATE_DEPTH)) {
+		return z * 65535.0f;
+	}
+
 	const float depthSliceFactor = DepthSliceFactor();
 	const float offset = 0.5f * (depthSliceFactor - 1.0f) * (1.0f / depthSliceFactor);
 	return (z - offset) * depthSliceFactor * 65535.0f;