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Diffstat (limited to 'src/parsec/vsdl_inito.cpp')
| -rw-r--r-- | src/parsec/vsdl_inito.cpp | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/parsec/vsdl_inito.cpp b/src/parsec/vsdl_inito.cpp new file mode 100644 index 0000000..cd2eb72 --- /dev/null +++ b/src/parsec/vsdl_inito.cpp @@ -0,0 +1,232 @@ +/* + * 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(); +} |