From 090f304f3368d96cb02c2ffb89701864d07c2191 Mon Sep 17 00:00:00 2001
From: Jaime Ita Passos <jp6781615@gmail.com>
Date: Wed, 28 Apr 2021 22:00:20 -0300
Subject: [PATCH] Use 64-bit x/y in R_GetSlopeZAt
---
src/r_plane.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/r_plane.c b/src/r_plane.c
index acbbc8a5cb..8db4801b55 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -693,13 +693,13 @@ static void R_DrawSkyPlane(visplane_t *pl)
// Returns the height of the sloped plane at (x, y) as a 32.16 fixed_t
static INT64 R_GetSlopeZAt(const pslope_t *slope, fixed_t x, fixed_t y)
{
- x = ((INT64)x - (INT64)slope->o.x);
- y = ((INT64)y - (INT64)slope->o.y);
+ INT64 x64 = ((INT64)x - (INT64)slope->o.x);
+ INT64 y64 = ((INT64)y - (INT64)slope->o.y);
- x = (x * (INT64)slope->d.x) / FRACUNIT;
- y = (y * (INT64)slope->d.y) / FRACUNIT;
+ x64 = (x64 * (INT64)slope->d.x) / FRACUNIT;
+ y64 = (y64 * (INT64)slope->d.y) / FRACUNIT;
- return (INT64)slope->o.z + ((x + y) * (INT64)slope->zdelta) / FRACUNIT;
+ return (INT64)slope->o.z + ((x64 + y64) * (INT64)slope->zdelta) / FRACUNIT;
}
// Sets the texture origin vector of the sloped plane.
--
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