mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-11 07:42:18 +00:00
8ee06d75a9
This paves the way for clean initialization of the Vulkan renderer, and very much cleans up the older renderer initialization code as gl and sw are no longer intertwined.
183 lines
4 KiB
C
183 lines
4 KiB
C
/*
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vid_sdl.c
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Video driver for Sam Lantinga's Simple DirectMedia Layer
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include <SDL.h>
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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/qendian.h"
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#include "QF/sys.h"
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#include "QF/vid.h"
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#include "context_sdl.h"
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#include "d_iface.h"
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#include "vid_internal.h"
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#include "vid_sw.h"
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#ifdef _WIN32 // FIXME: evil hack to get full DirectSound support with SDL
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#include <windows.h>
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#include <SDL_syswm.h>
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HWND mainwindow;
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#endif
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// The original defaults
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#define BASEWIDTH 320
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#define BASEHEIGHT 200
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byte *VGA_pagebase;
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int VGA_width, VGA_height, VGA_rowbytes, VGA_bufferrowbytes = 0;
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// Define GLAPIENTRY to a useful value
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#ifndef GLAPIENTRY
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# ifdef _WIN32
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# include <windows.h>
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# define GLAPIENTRY WINAPI
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# undef LoadImage
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# else
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# ifdef APIENTRY
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# define GLAPIENTRY APIENTRY
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# else
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# define GLAPIENTRY
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# endif
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# endif
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#endif
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static byte cached_palette[256 * 3];
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static int update_palette;
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static void
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sdl_update_palette (const byte *palette)
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{
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SDL_Color colors[256];
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int i;
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for (i = 0; i < 256; ++i) {
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colors[i].r = *palette++;
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colors[i].g = *palette++;
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colors[i].b = *palette++;
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}
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SDL_SetColors (sdl_screen, colors, 0, 256);
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}
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static void
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VID_SetPalette (const byte *palette)
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{
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if (memcmp (cached_palette, palette, sizeof (cached_palette))) {
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memcpy (cached_palette, palette, sizeof (cached_palette));
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update_palette = 1;
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}
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}
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static void
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do_screen_buffer (void)
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{
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}
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static void
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sdl_set_vid_mode (sw_ctx_t *ctx)
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{
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// Initialize display
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if (!(sdl_screen = SDL_SetVideoMode (viddef.width, viddef.height, 8,
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sdl_flags)))
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Sys_Error ("VID: Couldn't set video mode: %s", SDL_GetError ());
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// now know everything we need to know about the buffer
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VGA_width = viddef.width;
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VGA_height = viddef.height;
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viddef.vid_internal->do_screen_buffer = do_screen_buffer;
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VGA_pagebase = viddef.buffer = sdl_screen->pixels;
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VGA_rowbytes = viddef.rowbytes = sdl_screen->pitch;
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viddef.conbuffer = viddef.buffer;
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viddef.conrowbytes = viddef.rowbytes;
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viddef.direct = 0;
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VID_InitBuffers (); // allocate z buffer and surface cache
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}
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static void
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sdl_sw_update (vrect_t *rects)
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{
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static SDL_Rect *sdlrects;
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static int num_sdlrects;
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int i, n;
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vrect_t *rect;
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if (update_palette) {
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update_palette = 0;
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sdl_update_palette (cached_palette);
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}
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// Two-pass system, since Quake doesn't do it the SDL way...
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// First, count the number of rectangles
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n = 0;
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for (rect = rects; rect; rect = rect->next)
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++n;
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if (n > num_sdlrects) {
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num_sdlrects = n;
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sdlrects = realloc (sdlrects, n * sizeof (SDL_Rect));
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if (!sdlrects)
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Sys_Error ("Out of memory!");
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}
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// Second, copy them to SDL rectangles and update
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i = 0;
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for (rect = rects; rect; rect = rect->next) {
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sdlrects[i].x = rect->x;
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sdlrects[i].y = rect->y;
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sdlrects[i].w = rect->width;
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sdlrects[i].h = rect->height;
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++i;
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}
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SDL_UpdateRects (sdl_screen, n, sdlrects);
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}
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sw_ctx_t *
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SDL_SW_Context (void)
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{
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sw_ctx_t *ctx = calloc (1, sizeof (sw_ctx_t));
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ctx->set_palette = VID_SetPalette;
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ctx->create_context = sdl_set_vid_mode;
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ctx->update = sdl_sw_update;
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return ctx;
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}
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void
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SDL_SW_Init_Cvars ()
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{
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}
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