From 173edd4b3f494632affa23847cf0a609adaeb35a Mon Sep 17 00:00:00 2001
From: plagman <plagman@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Wed, 9 Dec 2009 07:03:25 +0000
Subject: [PATCH] Port of the San Andreas fault texture alignment fix from
 Hunter_rus to Polymer. I have no idea what it does, but it works and the last
 thing I want to do is to mess with build texture alignment ever again.

git-svn-id: https://svn.eduke32.com/eduke32@1559 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/src/polymer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/polymer/eduke32/build/src/polymer.c b/polymer/eduke32/build/src/polymer.c
index 452c139e2..a51d6a865 100644
--- a/polymer/eduke32/build/src/polymer.c
+++ b/polymer/eduke32/build/src/polymer.c
@@ -2467,6 +2467,8 @@ static void         polymer_updatewall(int16_t wallnum)
             ypancoef = (float)(pow2long[picsiz[curpicnum] >> 4]);
             if (ypancoef < tilesizy[curpicnum])
                 ypancoef *= 2;
+            if (curypanning > 256 - (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef))
+                curypanning -= (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef);
             ypancoef *= (float)(wal->ypanning) / (256.0f * (float)(tilesizy[curpicnum]));
         }
         else
@@ -2537,6 +2539,8 @@ static void         polymer_updatewall(int16_t wallnum)
                 ypancoef = (float)(pow2long[picsiz[curpicnum] >> 4]);
                 if (ypancoef < tilesizy[curpicnum])
                     ypancoef *= 2;
+                if (curypanning > 256 - (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef))
+                    curypanning -= (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef);
                 ypancoef *= (float)(curypanning) / (256.0f * (float)(tilesizy[curpicnum]));
             }
             else
@@ -2622,6 +2626,8 @@ static void         polymer_updatewall(int16_t wallnum)
                 ypancoef = (float)(pow2long[picsiz[curpicnum] >> 4]);
                 if (ypancoef < tilesizy[curpicnum])
                     ypancoef *= 2;
+                if (curypanning > 256 - (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef))
+                    curypanning -= (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef);
                 ypancoef *= (float)(wal->ypanning) / (256.0f * (float)(tilesizy[curpicnum]));
             }
             else
@@ -2672,6 +2678,8 @@ static void         polymer_updatewall(int16_t wallnum)
                     ypancoef = (float)(pow2long[picsiz[curpicnum] >> 4]);
                     if (ypancoef < tilesizy[curpicnum])
                         ypancoef *= 2;
+                    if (curypanning > 256 - (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef))
+                        curypanning -= (ypancoef - tilesizy[curpicnum]) * (256.0f / ypancoef);
                     ypancoef *= (float)(wal->ypanning) / (256.0f * (float)(tilesizy[curpicnum]));
                 }
                 else