From 450047627a51cf3a1b96abe9df1b4e94b877b872 Mon Sep 17 00:00:00 2001
From: terminx <terminx@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Sun, 2 Jul 2006 21:25:33 +0000
Subject: [PATCH] Allow disabling of the HOM correction hack

git-svn-id: https://svn.eduke32.com/eduke32@204 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/build/include/build.h    | 3 ++-
 polymer/build/src/polymost.c     | 7 ++++---
 polymer/eduke32/source/config.c  | 2 ++
 polymer/eduke32/source/osdcmds.c | 1 +
 4 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/polymer/build/include/build.h b/polymer/build/include/build.h
index 432038b2e..fbf2360e5 100644
--- a/polymer/build/include/build.h
+++ b/polymer/build/include/build.h
@@ -472,7 +472,8 @@ extern long glusetexcompr;
 extern long gltexfiltermode;
 extern long glredbluemode;
 extern long glusetexcache, glusetexcachecompression;
-extern long glmultisample, glnvmultisamplehint, glwidescreen, glhudcorrect;
+extern long glmultisample, glnvmultisamplehint;
+extern long glwidescreen, glhudcorrect, glprojectionhacks;
 void gltexapplyprops (void);
 #endif
 
diff --git a/polymer/build/src/polymost.c b/polymer/build/src/polymost.c
index 88e1e29c2..e151e11ac 100644
--- a/polymer/build/src/polymost.c
+++ b/polymer/build/src/polymost.c
@@ -126,6 +126,7 @@ long gltexmiplevel = 0;		// discards this many mipmap levels
 static long lastglpolygonmode = 0; //FUK
 long glpolygonmode = 0;     // 0:GL_FILL,1:GL_LINE,2:GL_POINT //FUK
 long glwidescreen = 0;
+long glprojectionhacks = 1;
 long glhudcorrect = 0;
 static GLuint polymosttext = 0;
 extern char nofog;
@@ -592,15 +593,15 @@ void resizeglcheck ()
         glox1 = windowx1; gloy1 = windowy1;
         glox2 = windowx2; gloy2 = windowy2;
 
-        fovcorrect = glwidescreen?0:(((windowx2-windowx1+1) * 1.2) - (windowx2-windowx1+1));
+        fovcorrect = glprojectionhacks?(glwidescreen?0:(((windowx2-windowx1+1) * 1.2) - (windowx2-windowx1+1))):0;
 
         bglViewport(windowx1 - (fovcorrect / 2), yres-(windowy2+1),windowx2-windowx1+1 + fovcorrect, windowy2-windowy1+1);
 
         bglMatrixMode(GL_PROJECTION);
         memset(m,0,sizeof(m));
-        m[0][0] = (float)ydimen / 1.2; m[0][2] = 1.0;
+        m[0][0] = (float)ydimen / (glprojectionhacks?1.2:1); m[0][2] = 1.0;
         m[1][1] = (float)xdimen; m[1][2] = 1.0;
-        m[2][2] = 1.0; m[2][3] = (float)ydimen / 1.2;
+        m[2][2] = 1.0; m[2][3] = (float)ydimen / (glprojectionhacks?1.2:1);
         m[3][2] =-1.0;
         bglLoadMatrixf(&m[0][0]);
         //bglLoadIdentity();
diff --git a/polymer/eduke32/source/config.c b/polymer/eduke32/source/config.c
index e8a3030ea..c185d0dcf 100644
--- a/polymer/eduke32/source/config.c
+++ b/polymer/eduke32/source/config.c
@@ -617,6 +617,7 @@ int32 CONFIG_ReadSetup( void )
         SCRIPT_GetNumber( scripthandle, "Screen Setup", "GLTextureMode", &gltexfiltermode);
         SCRIPT_GetNumber( scripthandle, "Screen Setup", "GLAnisotropy", &glanisotropy);
         SCRIPT_GetNumber( scripthandle, "Screen Setup", "GLHUDCorrect", &glhudcorrect);
+        SCRIPT_GetNumber( scripthandle, "Screen Setup", "GLProjectionFix", &glprojectionhacks);
         SCRIPT_GetNumber( scripthandle, "Screen Setup", "GLUseTextureCompr", &glusetexcompr);
         SCRIPT_GetNumber( scripthandle, "Screen Setup", "GLWidescreen", &glwidescreen);
 
@@ -762,6 +763,7 @@ void CONFIG_WriteSetup( void )
 #if defined(POLYMOST) && defined(USE_OPENGL)
     SCRIPT_PutNumber( scripthandle, "Screen Setup", "GLAnisotropy",glanisotropy,false,false);
     SCRIPT_PutNumber( scripthandle, "Screen Setup", "GLHUDCorrect",glhudcorrect,false,false);
+    SCRIPT_PutNumber( scripthandle, "Screen Setup", "GLProjectionFix",glprojectionhacks,false,false);
     SCRIPT_PutNumber( scripthandle, "Screen Setup", "GLTextureMode",gltexfiltermode,false,false);
     SCRIPT_PutNumber( scripthandle, "Screen Setup", "GLUseCompressedTextureCache", glusetexcache,false,false);
     SCRIPT_PutNumber( scripthandle, "Screen Setup", "GLUseTextureCacheCompression", glusetexcachecompression,false,false);
diff --git a/polymer/eduke32/source/osdcmds.c b/polymer/eduke32/source/osdcmds.c
index cfa20fcce..adbac7bd8 100644
--- a/polymer/eduke32/source/osdcmds.c
+++ b/polymer/eduke32/source/osdcmds.c
@@ -469,6 +469,7 @@ struct cvarmappings {
 #if defined(POLYMOST) && defined(USE_OPENGL)
         { "r_anamorphic", "r_anamorphic: enable/disable widescreen mode", (void*)&glwidescreen, CVAR_BOOL, 0, 0, 1 },
         { "r_hudcorrect", "r_hudcorrect: enable/disable correct HUD weapon rendering", (void*)&glhudcorrect, CVAR_BOOL, 0, 0, 1 },
+        { "r_projectionhack", "r_projectionhack: enable/disable projection hack", (void*)&glprojectionhacks, CVAR_BOOL, 0, 0, 1 },
 #endif
         { "r_precache", "r_precache: enable/disable the pre-level caching routine", (void*)&useprecache, CVAR_BOOL, 0, 0, 1 }
     };