From 1a49f6066f3e4a6325f7a915bba1160c5c758ddd Mon Sep 17 00:00:00 2001
From: Matt Borgerson <contact@mborgerson.com>
Date: Mon, 11 Oct 2021 22:39:25 -0700
Subject: [PATCH] nv2a: Discard bump env params for tex 0

---
 hw/xbox/nv2a/pgraph.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/hw/xbox/nv2a/pgraph.c b/hw/xbox/nv2a/pgraph.c
index 46dd37e35f..81c1960a20 100644
--- a/hw/xbox/nv2a/pgraph.c
+++ b/hw/xbox/nv2a/pgraph.c
@@ -2790,7 +2790,11 @@ DEF_METHOD(NV097, SET_TEXTURE_BORDER_COLOR)
 DEF_METHOD(NV097, SET_TEXTURE_SET_BUMP_ENV_MAT)
 {
     int slot = (method - NV097_SET_TEXTURE_SET_BUMP_ENV_MAT) / 4;
-    assert((slot / 16) > 0);
+    if (slot < 16) {
+        /* discard */
+        return;
+    }
+
     slot -= 16;
     pg->bump_env_matrix[slot / 16][slot % 4] = *(float*)&parameter;
 }
@@ -2798,7 +2802,11 @@ DEF_METHOD(NV097, SET_TEXTURE_SET_BUMP_ENV_MAT)
 DEF_METHOD(NV097, SET_TEXTURE_SET_BUMP_ENV_SCALE)
 {
     int slot = (method - NV097_SET_TEXTURE_SET_BUMP_ENV_SCALE) / 64;
-    assert(slot > 0);
+    if (slot == 0) {
+        /* discard */
+        return;
+    }
+
     slot--;
     pg->regs[NV_PGRAPH_BUMPSCALE1 + slot * 4] = parameter;
 }
@@ -2806,7 +2814,11 @@ DEF_METHOD(NV097, SET_TEXTURE_SET_BUMP_ENV_SCALE)
 DEF_METHOD(NV097, SET_TEXTURE_SET_BUMP_ENV_OFFSET)
 {
     int slot = (method - NV097_SET_TEXTURE_SET_BUMP_ENV_OFFSET) / 64;
-    assert(slot > 0);
+    if (slot == 0) {
+        /* discard */
+        return;
+    }
+
     slot--;
     pg->regs[NV_PGRAPH_BUMPOFFSET1 + slot * 4] = parameter;
 }