initial importHEADmain

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diff --git a/src/parsec/vsdl_inito.cpp b/src/parsec/vsdl_inito.cpp
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+++ b/src/parsec/vsdl_inito.cpp
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+/*
+ * PARSEC - Video Init Functions (SDL)
+ *
+ * $Author: uberlinuxguy $ - $Date: 2004/09/15 12:25:37 $
+ *
+ * Orginally written by:
+ *   Copyright (c) Markus Hadwiger     <msh@parsec.org>   1999
+ *   Copyright (c) Andreas Varga       <sid@parsec.org>   1999
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */ 
+#include "config.h"
+
+// C library
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+// compilation flags/debug support
+#include "config.h"
+#include "debug.h"
+
+// general definitions
+#include "general.h"
+#include "objstruc.h"
+
+// global externals
+#include "globals.h"
+
+// subsystem headers
+#include "vid_defs.h"
+
+// local module header
+#include "vsdl_inito.h"
+
+// proprietary module headers
+#include "con_aux.h"
+#include "con_ext.h"
+#include "e_color.h"
+#include "vsdl_ogl.h"
+
+
+static const char * initscript = "sys_gl";
+
+
+// init display (video mode) using global vars --------------------------------
+//
+void VIDs_InitDisplay()
+{
+	// switch to desired video mode
+	VSDL_InitOGLMode();
+
+	// set gamma correction
+	VIDs_SetGammaCorrection( GammaCorrection );
+
+	// clear text mode flag
+	TextModeActive = FALSE;
+}
+
+
+// restore display to text mode -----------------------------------------------
+//
+void VIDs_RestoreDisplay()
+{
+	// exit function if no graphics mode active
+	if ( TextModeActive )
+		return;
+
+	// destroy canvas
+	VSDL_ShutDownOGL();
+
+	// set text mode flag once again
+	TextModeActive = TRUE;
+}
+
+
+// calculate the global projective projection-matrix --------------------------
+//
+void VIDs_CalcProjectiveMatrix()
+{
+	VSDL_CalcProjectiveMatrix();
+}
+
+
+// calculate the global orthographic projection-matrix ------------------------
+//
+void VIDs_CalcOrthographicMatrix()
+{
+	VSDL_CalcOrthographicMatrix();
+}
+
+
+// execute subsystem initialization script ------------------------------------
+//
+PRIVATE
+void SDL_ExecSubsysScript()
+{
+	//NOTE:
+	// this function executes a script that can be
+	// used to reload critical data on each video
+	// subsystem switch.
+
+	// only when non-initial subsystem init
+	extern int console_init_done;
+	if ( !console_init_done )
+		return;
+
+	if ( TextModeActive ) {
+		MSGPUT( "Converting data for OpenGL rendering..." );
+	}
+
+	// put up conversion dialog
+//	SM_ShowSplashScreen( TRUE );
+
+	int oldstate_texture = AUX_ENABLE_TEXTURE_OVERLOADING;
+	AUX_ENABLE_TEXTURE_OVERLOADING = 1;
+	AUX_ALLOW_ONLY_TEXTURE_LOADING = 1;
+	int oldstate_write = AUX_CMD_WRITE_DISABLE_OUTPUT;
+	AUX_CMD_WRITE_DISABLE_OUTPUT = 1;
+
+	// execute video subsystem init script
+	int rc = ExecExternalFile( (char *) initscript );
+
+	AUX_ENABLE_TEXTURE_OVERLOADING = oldstate_texture;
+	AUX_ALLOW_ONLY_TEXTURE_LOADING = 0;
+	AUX_CMD_WRITE_DISABLE_OUTPUT   = oldstate_write;
+
+	if ( TextModeActive ) {
+		if ( rc && AUX_CMD_WRITE_ACTIVE_IN_TEXTMODE ) {
+			MSGOUT( "\nConversion finished." );
+		} else {
+			MSGOUT( "done." );
+		}
+	}
+	
+//	SM_DestroySplashScreen();
+}
+
+
+// tables for supported texture formats ---------------------------------------
+//
+static int texfmt_general[] = {
+
+	FALSE,		// TEXFMT_STANDARD
+	FALSE,		// TEXFMT_RGB_565
+	FALSE,		// TEXFMT_RGBA_1555
+	TRUE,		// TEXFMT_RGB_888
+	TRUE,		// TEXFMT_RGBA_8888
+	TRUE,		// TEXFMT_ALPHA_8
+	TRUE,		// TEXFMT_INTENSITY_8
+	TRUE,		// TEXFMT_LUMINANCE_8
+};
+
+
+// init internal video subsystem-specific flags -------------------------------
+//
+PRIVATE
+void SDL_VideoFlagsSetup()
+{
+	// basic 32bpp conversion flags
+	dword base32 = 0;
+	base32 |= COLORSETUP_32BPP_PAL_SWAP_RGB;
+	base32 |= COLORSETUP_32BPP_PAL_SET_ALPHA;
+//	base32 |= COLORSETUP_32BPP_BITMAP_YINVERSE;
+	base32 |= COLORSETUP_32BPP_FONT_YINVERSE;
+	base32 |= COLORSETUP_32BPP_ENABLE_TRANSPARENCY;
+	base32 |= COLORSETUP_32BPP_CONVERT_SCALE_BITMAPS;
+
+	//NOTE:
+	// COLORSETUP_32BPP_BITMAP_YINVERSE must be specified if
+	// glDrawPixels() is used for bitmaps instead of textures.
+
+	// texture conversion flags
+	dword textures = 0;
+	textures |= COLORSETUP_STANDARD_TO_RGB_888;
+	textures |= COLORSETUP_GLIDE3DF_TO_RGB_888;		// RGB-only allowed
+//	textures |= COLORSETUP_GLIDE3DF_TO_RGBA_8888;	// no RGB-only: use RGBA
+	textures |= COLORSETUP_ALPHA_8_TO_RGBA_8888;	// no alpha-only textures
+
+	// font conversion flags
+	dword fonts = 0;
+//	fonts |= COLORSETUP_FONT_TO_TEXTURE_ALPHA;		// alpha-only fonts
+	fonts |= COLORSETUP_FONT_TO_TEXTURE_RGBA;		// no alpha-only fonts
+
+	// color swapping flags
+	dword colswap = 0;
+	colswap |= COLORSETUP_SWAP_BITMAPS_32BPP;
+	colswap |= COLORSETUP_SWAP_FONTS_32BPP;
+
+	// set color translation for opengl
+	ColorSetupFlags = base32 | textures | fonts | colswap;
+
+	// set relevant vidinfo flags
+	VidInfo_UseIterForDemoTexts = TRUE;				// demo texts as textures
+	VidInfo_MaxTextureSize		= 2048;				// may decrease on mode init
+	VidInfo_MaxTextureLod		= TEXLOD_2048;		// may decrease on mode init
+	VidInfo_NumTextureUnits		= 16;
+
+	// set supported texture formats
+	VidInfo_SupportedTexFormats	= texfmt_general;
+}
+
+
+// init api responsible for frame buffer (wgl) --------------------------------
+//
+void VIDs_InitFrameBufferAPI()
+{
+	// init opengl and fill in available video modes
+	if ( !VSDL_InitOGLInterface( PrintVidModeList ) ) {
+
+		MSGOUT( "OpenGL could not be initialized.\n\n" );
+		PANIC ( "OpenGL (SDL) init error." );
+	}
+
+	// set video flags (internal config)
+	SDL_VideoFlagsSetup();
+
+	// execute script if available
+	SDL_ExecSubsysScript();
+}