nv2a: Fix handling of color/zeta offset with RAM addresses

abaire · abaire · commit cb0b70baf1ad · 2025-07-02T10:01:53.000-07:00
diff --git a/hw/xbox/nv2a/pgraph/pgraph.c b/hw/xbox/nv2a/pgraph/pgraph.c
@@ -1026,14 +1026,14 @@ DEF_METHOD(NV097, SET_SURFACE_COLOR_OFFSET)
 {
     d->pgraph.renderer->ops.surface_update(d, false, true, true);
     pg->surface_color.buffer_dirty |= (pg->surface_color.offset != parameter);
-    pg->surface_color.offset = parameter;
+    pg->surface_color.offset = parameter & 0x0FFFFFFF;
 }
 
 DEF_METHOD(NV097, SET_SURFACE_ZETA_OFFSET)
 {
     d->pgraph.renderer->ops.surface_update(d, false, true, true);
     pg->surface_zeta.buffer_dirty |= (pg->surface_zeta.offset != parameter);
-    pg->surface_zeta.offset = parameter;
+    pg->surface_zeta.offset = parameter & 0x0FFFFFFF;
 }
 
 DEF_METHOD_INC(NV097, SET_COMBINER_ALPHA_ICW)

Original file line number	Diff line number	Diff line change
`@@ -1026,14 +1026,14 @@ DEF_METHOD(NV097, SET_SURFACE_COLOR_OFFSET)`
`1026`	`1026`	`{`
`1027`	`1027`	`d->pgraph.renderer->ops.surface_update(d, false, true, true);`
`1028`	`1028`	`pg->surface_color.buffer_dirty \|= (pg->surface_color.offset != parameter);`
`1029`		`- pg->surface_color.offset = parameter;`
	`1029`	`+ pg->surface_color.offset = parameter & 0x0FFFFFFF;`
`1030`	`1030`	`}`
`1031`	`1031`
`1032`	`1032`	`DEF_METHOD(NV097, SET_SURFACE_ZETA_OFFSET)`
`1033`	`1033`	`{`
`1034`	`1034`	`d->pgraph.renderer->ops.surface_update(d, false, true, true);`
`1035`	`1035`	`pg->surface_zeta.buffer_dirty \|= (pg->surface_zeta.offset != parameter);`
`1036`		`- pg->surface_zeta.offset = parameter;`
	`1036`	`+ pg->surface_zeta.offset = parameter & 0x0FFFFFFF;`
`1037`	`1037`	`}`
`1038`	`1038`
`1039`	`1039`	`DEF_METHOD_INC(NV097, SET_COMBINER_ALPHA_ICW)`