From 9b29344a87fea0e894babd6b5e21a1ca09e9f7cb Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Mon, 20 Mar 2017 14:02:51 -0700
Subject: [PATCH] DS GX: Fix unmapped slot 1 for compressed textures

---
 src/ds/gx/software.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ds/gx/software.c b/src/ds/gx/software.c
index 9d31a1f01..b88543065 100644
--- a/src/ds/gx/software.c
+++ b/src/ds/gx/software.c
@@ -177,7 +177,9 @@ static color_t _lookupColor(struct DSGXSoftwareRenderer* renderer, struct DSGXSo
 	uint8_t r, g, b;
 	unsigned wr, wg, wb, wa;
 	if (poly->texFormat == 5) {
-		// TODO: Slot 2 uses upper half
+		if (!renderer->d.tex[1]) {
+			return 0;
+		}
 		uint16_t half = DSGXTexParamsGetVRAMBase(poly->poly->texParams) & 0x8000;
 		uint32_t slot1Base = (DSGXTexParamsGetVRAMBase(poly->poly->texParams) << 1) + (texelCoord >> 2) + half;
 		uint16_t texel2 = renderer->d.tex[1][slot1Base];