From 7a9e9fada4c43a176aad0c3003ad0e05c8dc9320 Mon Sep 17 00:00:00 2001
From: helixhorned <helixhorned@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Mon, 12 Aug 2013 15:18:19 +0000
Subject: [PATCH] When issuing "setrendmode" OSD command with mismatched
 vidmode, auto-switch.

git-svn-id: https://svn.eduke32.com/eduke32@4015 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/include/baselayer.h |  2 ++
 polymer/eduke32/build/src/baselayer.c     | 36 +++++++++++++++++++++--
 polymer/eduke32/build/src/build.c         |  2 ++
 polymer/eduke32/source/osdcmds.c          |  6 ++--
 4 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/polymer/eduke32/build/include/baselayer.h b/polymer/eduke32/build/include/baselayer.h
index f4c91c4da..518b74e05 100644
--- a/polymer/eduke32/build/include/baselayer.h
+++ b/polymer/eduke32/build/include/baselayer.h
@@ -38,6 +38,8 @@ extern char offscreenrendering;
 void calc_ylookup(int32_t bpl, int32_t lastyidx);
 
 #ifdef USE_OPENGL
+int32_t (*baselayer_osdcmd_vidmode_func)(const osdfuncparm_t *parm);
+
 void fullscreen_tint_gl(uint8_t r, uint8_t g, uint8_t b, uint8_t f);
 extern int32_t osdcmd_glinfo(const osdfuncparm_t *parm);
 
diff --git a/polymer/eduke32/build/src/baselayer.c b/polymer/eduke32/build/src/baselayer.c
index 449d23cde..de0b6b32f 100644
--- a/polymer/eduke32/build/src/baselayer.c
+++ b/polymer/eduke32/build/src/baselayer.c
@@ -207,19 +207,49 @@ struct glinfo_t glinfo =
 int32_t flushlogwindow = 1;
 
 #ifdef USE_OPENGL
+// Used to register the game's / editor's osdcmd_vidmode() functions here.
+int32_t (*baselayer_osdcmd_vidmode_func)(const osdfuncparm_t *parm);
+
 static int32_t osdfunc_setrendermode(const osdfuncparm_t *parm)
 {
     int32_t m;
     char *p;
 
-    if (parm->numparms != 1) return OSDCMD_SHOWHELP;
+    if (parm->numparms != 1)
+        return OSDCMD_SHOWHELP;
+
     m = Bstrtol(parm->parms[0], &p, 10);
 
-    if (m < REND_CLASSIC || m > REND_POLYMER) return OSDCMD_SHOWHELP;
+    if (m != REND_CLASSIC && m != REND_POLYMOST && m != REND_POLYMER)
+        return OSDCMD_SHOWHELP;
+
+    if ((m==REND_CLASSIC) != (bpp==8) && baselayer_osdcmd_vidmode_func)
+    {
+        // Mismatch between video mode and requested renderer, do auto switch.
+        osdfuncparm_t parm;
+        char arg[4];
+
+        const char *ptrptr[1];
+        ptrptr[0] = arg;
+
+        Bmemset(&parm, 0, sizeof(parm));
+
+        if (m==REND_CLASSIC)
+            Bmemcpy(&arg, "8", 2);
+        else
+            Bmemcpy(&arg, "32", 3);
+
+        // CAUTION: we assume that the osdcmd_vidmode function doesn't use any
+        // other member!
+        parm.numparms = 1;
+        parm.parms = ptrptr;
+
+        baselayer_osdcmd_vidmode_func(&parm);
+    }
 
     setrendermode(m);
 
-    switch(getrendermode())
+    switch (getrendermode())
     {
     case REND_CLASSIC:
         p = "classic software";
diff --git a/polymer/eduke32/build/src/build.c b/polymer/eduke32/build/src/build.c
index 8331ac677..134442bd1 100644
--- a/polymer/eduke32/build/src/build.c
+++ b/polymer/eduke32/build/src/build.c
@@ -512,9 +512,11 @@ int32_t app_main(int32_t argc, const char **argv)
 #ifdef USE_OPENGL
     OSD_RegisterFunction("restartvid","restartvid: reinitialize the video mode",osdcmd_restartvid);
     OSD_RegisterFunction("vidmode","vidmode <xdim> <ydim> <bpp> <fullscreen>: immediately change the video mode",osdcmd_vidmode);
+    baselayer_osdcmd_vidmode_func = osdcmd_vidmode;
 #else
     OSD_RegisterFunction("vidmode","vidmode <xdim> <ydim>: immediately change the video mode",osdcmd_vidmode);
 #endif
+
     wm_setapptitle("Mapster32");
 
     editstatus = 1;
diff --git a/polymer/eduke32/source/osdcmds.c b/polymer/eduke32/source/osdcmds.c
index 09dbb2cee..d1fafdaa1 100644
--- a/polymer/eduke32/source/osdcmds.c
+++ b/polymer/eduke32/source/osdcmds.c
@@ -1604,11 +1604,9 @@ int32_t registerosdcommands(void)
     OSD_RegisterFunction("unbindall","unbindall: unbinds all keys", osdcmd_unbindall);
 
     OSD_RegisterFunction("vidmode","vidmode <xdim> <ydim> <bpp> <fullscreen>: change the video mode",osdcmd_vidmode);
-#if 0
-    OSD_RegisterFunction("savestate","",osdcmd_savestate);
-    OSD_RegisterFunction("restorestate","",osdcmd_restorestate);
+#ifdef USE_OPENGL
+    baselayer_osdcmd_vidmode_func = osdcmd_vidmode;
 #endif
-
     return 0;
 }