From 2b186e688c2812f03c08f83e69571a1d97748393 Mon Sep 17 00:00:00 2001
From: gm-matthew <108370479+gm-matthew@users.noreply.github.com>
Date: Sat, 6 Jul 2024 00:04:52 +0100
Subject: [PATCH] Texture mipmaps must be at least 2x2 Fixes sky in Dirt Devils

---
 Src/Graphics/New3D/R3DShaderCommon.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Src/Graphics/New3D/R3DShaderCommon.h b/Src/Graphics/New3D/R3DShaderCommon.h
index ec335d8..8534078 100644
--- a/Src/Graphics/New3D/R3DShaderCommon.h
+++ b/Src/Graphics/New3D/R3DShaderCommon.h
@@ -210,7 +210,7 @@ vec4 texBiLinear(usampler2D texSampler, ivec2 wrapMode, vec2 texSize, ivec2 texP
 vec4 GetTextureValue()
 {
 	float lod = mip_map_level(fsViewVertex);
-	float numLevels = floor(log2(min(float(baseTexInfo.z), float(baseTexInfo.w))));		// r3d only generates down to 1:1 for square textures, otherwise its the min dimension
+	float numLevels = floor(log2(min(float(baseTexInfo.z), float(baseTexInfo.w)))) - 1.0;	// r3d only generates down to 2:2 for square textures, otherwise its the min dimension
 	float fLevel = clamp(lod, 0.0, numLevels);
 
 	int iLevel = int(fLevel);