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Diffstat (limited to 'src/parsec/vsdl_suppo.cpp')
| -rw-r--r-- | src/parsec/vsdl_suppo.cpp | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/parsec/vsdl_suppo.cpp b/src/parsec/vsdl_suppo.cpp new file mode 100644 index 0000000..73c7e49 --- /dev/null +++ b/src/parsec/vsdl_suppo.cpp @@ -0,0 +1,236 @@ +/* + * PARSEC - Supporting 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 "aud_defs.h" +#include "sys_defs.h" +#include "vid_defs.h" + +// drawing subsystem +#include "d_iter.h" + +// local module header +#include "vsdl_suppo.h" +#include "vsdl_ogl.h" + + +// opengl headers +#include "r_gl.h" + + +// draw colored and alpha-blended rectangle that covers the entire screen ----- +// +PRIVATE +void VSDL_ScreenRectangle( colrgba_s color, word itertype ) +{ + + IterRectangle2 itrect; + + itrect.Vtxs[ 0 ].X = RASTV_0; + itrect.Vtxs[ 0 ].Y = RASTV_0; + itrect.Vtxs[ 0 ].Z = RASTV_1; + itrect.Vtxs[ 0 ].R = color.R; + itrect.Vtxs[ 0 ].G = color.G; + itrect.Vtxs[ 0 ].B = color.B; + itrect.Vtxs[ 0 ].A = color.A; + + itrect.Vtxs[ 1 ].X = INT_TO_RASTV( Screen_Width ); + itrect.Vtxs[ 1 ].Y = RASTV_0; + itrect.Vtxs[ 1 ].Z = RASTV_1; + itrect.Vtxs[ 1 ].R = itrect.Vtxs[ 0 ].R; + itrect.Vtxs[ 1 ].G = itrect.Vtxs[ 0 ].G; + itrect.Vtxs[ 1 ].B = itrect.Vtxs[ 0 ].B; + itrect.Vtxs[ 1 ].A = itrect.Vtxs[ 0 ].A; + + itrect.Vtxs[ 2 ].X = INT_TO_RASTV( Screen_Width ); + itrect.Vtxs[ 2 ].Y = INT_TO_RASTV( Screen_Height ); + itrect.Vtxs[ 2 ].Z = RASTV_1; + itrect.Vtxs[ 2 ].R = itrect.Vtxs[ 0 ].R; + itrect.Vtxs[ 2 ].G = itrect.Vtxs[ 0 ].G; + itrect.Vtxs[ 2 ].B = itrect.Vtxs[ 0 ].B; + itrect.Vtxs[ 2 ].A = itrect.Vtxs[ 0 ].A; + + itrect.Vtxs[ 3 ].X = RASTV_0; + itrect.Vtxs[ 3 ].Y = INT_TO_RASTV( Screen_Height ); + itrect.Vtxs[ 3 ].Z = RASTV_1; + itrect.Vtxs[ 3 ].R = itrect.Vtxs[ 0 ].R; + itrect.Vtxs[ 3 ].G = itrect.Vtxs[ 0 ].G; + itrect.Vtxs[ 3 ].B = itrect.Vtxs[ 0 ].B; + itrect.Vtxs[ 3 ].A = itrect.Vtxs[ 0 ].A; + + itrect.flags = ITERFLAG_NONE; + itrect.itertype = itertype; + itrect.raststate = rast_default; + itrect.rastmask = rast_nomask; + itrect.texmap = NULL; + + D_DrawIterRectangle2( &itrect ); +} + + +// fade in screen (palette) from black ---------------------------------------- +// +int VIDs_FadeScreenFromBlack( int palno ) +{ + return 1; +} + + +// fade screen (palette) to black --------------------------------------------- +// +int VIDs_FadeScreenToBlack( int palno, int fademusic ) +{ + if ( fademusic ) + AUDs_MaxMusicVolume(); + + // use black rectangle + colrgba_s color = { 0, 0, 0, 0 }; + + float subval = 0; + while ( subval <= 255 ) { + + if ( fademusic ) + AUDs_FadeMusicVolume(); + + SYSs_Yield(); + + // fade alpha of rectangle + color.A = (byte) subval; + VSDL_ScreenRectangle( color, iter_rgba | iter_alphablend ); + VIDs_CommitRenderBuffer(); + + subval += 4; // FIXME: doesn't take framerate into account + } + + return 1; +} + + +// fade screen (palette) to black (palette referenced via pointer) ------------ +// +int VIDs_FadePaletteToBlack( char *palette, int fademusic ) +{ + // since no actual palette is involved here, + // just use preceding function. + VIDs_FadeScreenToBlack( 0, fademusic ); + + return 1; +} + + +// fade in screen (palette) from white ---------------------------------------- +// +int VIDs_FadeScreenFromWhite( int palno ) +{ + return 1; +} + + +// set entire screen to single color ------------------------------------------ +// +int VIDs_SetScreenToColor( colrgba_s col ) +{ + // draw alpha-blended rectangle + VSDL_ScreenRectangle( col, iter_rgba | iter_alphablend ); + + return 1; +} + + +// set screen to dazzling white (whiteness depending on strength) ------------- +// +int VIDs_SetScreenDazzle( float strength ) +{ + // determine alpha of rectangle + byte fadeval = (byte) strength; + + // use white rectangle + colrgba_s color = { fadeval, fadeval, fadeval, 255 }; + + // draw additive-blended rectangle (should be multiplicative, but Parsec doesn't do HDR rendering) + VSDL_ScreenRectangle( color, iter_rgba | iter_additiveblend ); + + return 1; +} + + +// set color index zero to specified color ------------------------------------ +// +int VIDs_SetColIndexZero( int color ) +{ + // only check for blue + if ( color == COL_BACKGROUND_BLUE ) { + + // use translucent blue rectangle + colrgba_s color_rgba = { 0, 0, 255, 100 }; + + // draw alpha-blended rectangle + VSDL_ScreenRectangle( color_rgba, iter_rgba | iter_alphablend ); + } + + return 1; +} + + +// set gamma correction value ------------------------------------------------- +// +int VIDs_SetGammaCorrection( float gamma ) +{ + // disabled because it causes visual glitches, isn't well-supported, and leaks gamma changes onto the desktop + + /* + +#if SDL_VERSION_ATLEAST(2, 0, 0) + Uint16 ramp[256]; + SDL_CalculateGammaRamp(gamma, ramp); + SDL_SetWindowGammaRamp(curwindow, ramp, ramp, ramp); +#else + if ( !Op_WindowedMode ) { + SDL_SetGamma(gamma, gamma, gamma); // sets R G and B gamma to the same value. + } +#endif + + */ + + return TRUE; +} + |