ref: 47eca22c0a296502f838d1b3676b0cd8f5ba57b9
dir: /draw.c/
// draw.c -- this is the only file outside the refresh that touches the // vid buffer #include <u.h> #include <libc.h> #include "quakedef.h" typedef struct { vrect_t rect; int width; int height; byte *ptexbytes; int rowbytes; } rectdesc_t; static rectdesc_t r_rectdesc; byte *draw_chars; // 8*8 graphic characters qpic_t *draw_disc; qpic_t *draw_backtile; //============================================================================= /* Support Routines */ typedef struct cachepic_s { char name[MAX_QPATH]; cache_user_t cache; } cachepic_t; #define MAX_CACHED_PICS 128 cachepic_t menu_cachepics[MAX_CACHED_PICS]; int menu_numcachepics; qpic_t *Draw_PicFromWad (char *name) { return W_GetLumpName (name); } /* ================ Draw_CachePic ================ */ qpic_t *Draw_CachePic (char *path) { cachepic_t *pic; int i; qpic_t *dat; for (pic=menu_cachepics, i=0 ; i<menu_numcachepics ; pic++, i++) if (!strcmp (path, pic->name)) break; if (i == menu_numcachepics) { if (menu_numcachepics == MAX_CACHED_PICS) Sys_Error ("menu_numcachepics == MAX_CACHED_PICS"); menu_numcachepics++; strcpy (pic->name, path); } dat = Cache_Check (&pic->cache); if (dat) return dat; // // load the pic from disk // COM_LoadCacheFile (path, &pic->cache); dat = (qpic_t *)pic->cache.data; if (!dat) { Sys_Error ("Draw_CachePic: failed to load %s", path); } SwapPic (dat); return dat; } /* =============== Draw_Init =============== */ void Draw_Init (void) { draw_chars = W_GetLumpName ("conchars"); draw_disc = W_GetLumpName ("disc"); draw_backtile = W_GetLumpName ("backtile"); r_rectdesc.width = draw_backtile->width; r_rectdesc.height = draw_backtile->height; r_rectdesc.ptexbytes = draw_backtile->data; r_rectdesc.rowbytes = draw_backtile->width; } /* ================ Draw_Character Draws one 8*8 graphics character with 0 being transparent. It can be clipped to the top of the screen to allow the console to be smoothly scrolled off. ================ */ void Draw_Character (int x, int y, int num) { byte *dest; byte *source; unsigned short *pusdest; int drawline; int row, col; num &= 255; if (y <= -8) return; // totally off screen #ifdef PARANOID if (y > vid.height - 8 || x < 0 || x > vid.width - 8) Sys_Error ("Con_DrawCharacter: (%i, %i)", x, y); if (num < 0 || num > 255) Sys_Error ("Con_DrawCharacter: char %i", num); #endif row = num>>4; col = num&15; source = draw_chars + (row<<10) + (col<<3); if (y < 0) { // clipped drawline = 8 + y; source -= 128*y; y = 0; } else drawline = 8; if (r_pixbytes == 1) { dest = vid.conbuffer + y*vid.conrowbytes + x; while (drawline--) { if (source[0]) dest[0] = source[0]; if (source[1]) dest[1] = source[1]; if (source[2]) dest[2] = source[2]; if (source[3]) dest[3] = source[3]; if (source[4]) dest[4] = source[4]; if (source[5]) dest[5] = source[5]; if (source[6]) dest[6] = source[6]; if (source[7]) dest[7] = source[7]; source += 128; dest += vid.conrowbytes; } } else { // FIXME: pre-expand to native format? pusdest = (unsigned short *) ((byte *)vid.conbuffer + y*vid.conrowbytes + (x<<1)); while (drawline--) { if (source[0]) pusdest[0] = d_8to16table[source[0]]; if (source[1]) pusdest[1] = d_8to16table[source[1]]; if (source[2]) pusdest[2] = d_8to16table[source[2]]; if (source[3]) pusdest[3] = d_8to16table[source[3]]; if (source[4]) pusdest[4] = d_8to16table[source[4]]; if (source[5]) pusdest[5] = d_8to16table[source[5]]; if (source[6]) pusdest[6] = d_8to16table[source[6]]; if (source[7]) pusdest[7] = d_8to16table[source[7]]; source += 128; pusdest += (vid.conrowbytes >> 1); } } } /* ================ Draw_String ================ */ void Draw_String (int x, int y, char *str) { while (*str) { Draw_Character (x, y, *str); str++; x += 8; } } /* ================ Draw_DebugChar Draws a single character directly to the upper right corner of the screen. This is for debugging lockups by drawing different chars in different parts of the code. ================ */ void Draw_DebugChar (char num) { byte *dest; byte *source; int drawline; extern byte *draw_chars; int row, col; if (!vid.direct) return; // don't have direct FB access, so no debugchars... drawline = 8; row = num>>4; col = num&15; source = draw_chars + (row<<10) + (col<<3); dest = vid.direct + 312; while (drawline--) { dest[0] = source[0]; dest[1] = source[1]; dest[2] = source[2]; dest[3] = source[3]; dest[4] = source[4]; dest[5] = source[5]; dest[6] = source[6]; dest[7] = source[7]; source += 128; dest += 320; } } /* ============= Draw_Pic ============= */ void Draw_Pic (int x, int y, qpic_t *pic) { byte *dest, *source; unsigned short *pusdest; int v, u; if ((x < 0) || (x + pic->width > vid.width) || (y < 0) || (y + pic->height > vid.height)) { Sys_Error ("Draw_Pic: bad coordinates"); } source = pic->data; if (r_pixbytes == 1) { dest = vid.buffer + y * vid.rowbytes + x; for (v=0 ; v<pic->height ; v++) { Q_memcpy (dest, source, pic->width); dest += vid.rowbytes; source += pic->width; } } else { // FIXME: pretranslate at load time? pusdest = (unsigned short *)vid.buffer + y * (vid.rowbytes >> 1) + x; for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u++) { pusdest[u] = d_8to16table[source[u]]; } pusdest += vid.rowbytes >> 1; source += pic->width; } } } /* ============= Draw_TransPic ============= */ void Draw_TransPic (int x, int y, qpic_t *pic) { byte *dest, *source, tbyte; unsigned short *pusdest; int v, u; if (x < 0 || (unsigned)(x + pic->width) > vid.width || y < 0 || (unsigned)(y + pic->height) > vid.height) { Sys_Error ("Draw_TransPic: bad coordinates"); } source = pic->data; if (r_pixbytes == 1) { dest = vid.buffer + y * vid.rowbytes + x; if (pic->width & 7) { // general for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u++) if ( (tbyte=source[u]) != TRANSPARENT_COLOR) dest[u] = tbyte; dest += vid.rowbytes; source += pic->width; } } else { // unwound for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u+=8) { if ( (tbyte=source[u]) != TRANSPARENT_COLOR) dest[u] = tbyte; if ( (tbyte=source[u+1]) != TRANSPARENT_COLOR) dest[u+1] = tbyte; if ( (tbyte=source[u+2]) != TRANSPARENT_COLOR) dest[u+2] = tbyte; if ( (tbyte=source[u+3]) != TRANSPARENT_COLOR) dest[u+3] = tbyte; if ( (tbyte=source[u+4]) != TRANSPARENT_COLOR) dest[u+4] = tbyte; if ( (tbyte=source[u+5]) != TRANSPARENT_COLOR) dest[u+5] = tbyte; if ( (tbyte=source[u+6]) != TRANSPARENT_COLOR) dest[u+6] = tbyte; if ( (tbyte=source[u+7]) != TRANSPARENT_COLOR) dest[u+7] = tbyte; } dest += vid.rowbytes; source += pic->width; } } } else { // FIXME: pretranslate at load time? pusdest = (unsigned short *)vid.buffer + y * (vid.rowbytes >> 1) + x; for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u++) { tbyte = source[u]; if (tbyte != TRANSPARENT_COLOR) { pusdest[u] = d_8to16table[tbyte]; } } pusdest += vid.rowbytes >> 1; source += pic->width; } } } /* ============= Draw_TransPicTranslate ============= */ void Draw_TransPicTranslate (int x, int y, qpic_t *pic, byte *translation) { byte *dest, *source, tbyte; unsigned short *pusdest; int v, u; if (x < 0 || (unsigned)(x + pic->width) > vid.width || y < 0 || (unsigned)(y + pic->height) > vid.height) { Sys_Error ("Draw_TransPic: bad coordinates"); } source = pic->data; if (r_pixbytes == 1) { dest = vid.buffer + y * vid.rowbytes + x; if (pic->width & 7) { // general for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u++) if ( (tbyte=source[u]) != TRANSPARENT_COLOR) dest[u] = translation[tbyte]; dest += vid.rowbytes; source += pic->width; } } else { // unwound for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u+=8) { if ( (tbyte=source[u]) != TRANSPARENT_COLOR) dest[u] = translation[tbyte]; if ( (tbyte=source[u+1]) != TRANSPARENT_COLOR) dest[u+1] = translation[tbyte]; if ( (tbyte=source[u+2]) != TRANSPARENT_COLOR) dest[u+2] = translation[tbyte]; if ( (tbyte=source[u+3]) != TRANSPARENT_COLOR) dest[u+3] = translation[tbyte]; if ( (tbyte=source[u+4]) != TRANSPARENT_COLOR) dest[u+4] = translation[tbyte]; if ( (tbyte=source[u+5]) != TRANSPARENT_COLOR) dest[u+5] = translation[tbyte]; if ( (tbyte=source[u+6]) != TRANSPARENT_COLOR) dest[u+6] = translation[tbyte]; if ( (tbyte=source[u+7]) != TRANSPARENT_COLOR) dest[u+7] = translation[tbyte]; } dest += vid.rowbytes; source += pic->width; } } } else { // FIXME: pretranslate at load time? pusdest = (unsigned short *)vid.buffer + y * (vid.rowbytes >> 1) + x; for (v=0 ; v<pic->height ; v++) { for (u=0 ; u<pic->width ; u++) { tbyte = source[u]; if (tbyte != TRANSPARENT_COLOR) { pusdest[u] = d_8to16table[tbyte]; } } pusdest += vid.rowbytes >> 1; source += pic->width; } } } void Draw_CharToConback (int num, byte *dest) { int row, col; byte *source; int drawline; int x; row = num>>4; col = num&15; source = draw_chars + (row<<10) + (col<<3); drawline = 8; while (drawline--) { for (x=0 ; x<8 ; x++) if (source[x]) dest[x] = 0x60 + source[x]; source += 128; dest += 320; } } /* ================ Draw_ConsoleBackground ================ */ void Draw_ConsoleBackground (int lines) { int x, y, v; byte *src, *dest; unsigned short *pusdest; int f, fstep; qpic_t *conback; char ver[100]; conback = Draw_CachePic ("gfx/conback.lmp"); // hack the version number directly into the pic #ifdef X11 sprintf (ver, "(X11 Quake %2.2f) %4.2f", (float)X11_VERSION, (float)VERSION); dest = conback->data + 320*186 + 320 - 11 - 8*strlen(ver); #endif /* #ifdef __linux__ sprintf (ver, "(Linux Quake %2.2f) %4.2f", (float)LINUX_VERSION, (float)VERSION); dest = conback->data + 320*186 + 320 - 11 - 8*strlen(ver); #endif #ifndef __linux__ dest = conback->data + 320 - 43 + 320*186; sprintf (ver, "%4.2f", VERSION); #endif */ for (x=0 ; x<strlen(ver) ; x++) Draw_CharToConback (ver[x], dest+(x<<3)); // draw the pic if (r_pixbytes == 1) { dest = vid.conbuffer; for (y=0 ; y<lines ; y++, dest += vid.conrowbytes) { v = (vid.conheight - lines + y)*200/vid.conheight; src = conback->data + v*320; if (vid.conwidth == 320) memcpy (dest, src, vid.conwidth); else { f = 0; fstep = 320*0x10000/vid.conwidth; for (x=0 ; x<vid.conwidth ; x+=4) { dest[x] = src[f>>16]; f += fstep; dest[x+1] = src[f>>16]; f += fstep; dest[x+2] = src[f>>16]; f += fstep; dest[x+3] = src[f>>16]; f += fstep; } } } } else { pusdest = (unsigned short *)vid.conbuffer; for (y=0 ; y<lines ; y++, pusdest += (vid.conrowbytes >> 1)) { // FIXME: pre-expand to native format? // FIXME: does the endian switching go away in production? v = (vid.conheight - lines + y)*200/vid.conheight; src = conback->data + v*320; f = 0; fstep = 320*0x10000/vid.conwidth; for (x=0 ; x<vid.conwidth ; x+=4) { pusdest[x] = d_8to16table[src[f>>16]]; f += fstep; pusdest[x+1] = d_8to16table[src[f>>16]]; f += fstep; pusdest[x+2] = d_8to16table[src[f>>16]]; f += fstep; pusdest[x+3] = d_8to16table[src[f>>16]]; f += fstep; } } } } /* ============== R_DrawRect8 ============== */ void R_DrawRect8 (vrect_t *prect, int rowbytes, byte *psrc, int transparent) { byte t; int i, j, srcdelta, destdelta; byte *pdest; pdest = vid.buffer + (prect->y * vid.rowbytes) + prect->x; srcdelta = rowbytes - prect->width; destdelta = vid.rowbytes - prect->width; if (transparent) { for (i=0 ; i<prect->height ; i++) { for (j=0 ; j<prect->width ; j++) { t = *psrc; if (t != TRANSPARENT_COLOR) { *pdest = t; } psrc++; pdest++; } psrc += srcdelta; pdest += destdelta; } } else { for (i=0 ; i<prect->height ; i++) { memcpy (pdest, psrc, prect->width); psrc += rowbytes; pdest += vid.rowbytes; } } } /* ============== R_DrawRect16 ============== */ void R_DrawRect16 (vrect_t *prect, int rowbytes, byte *psrc, int transparent) { byte t; int i, j, srcdelta, destdelta; unsigned short *pdest; // FIXME: would it be better to pre-expand native-format versions? pdest = (unsigned short *)vid.buffer + (prect->y * (vid.rowbytes >> 1)) + prect->x; srcdelta = rowbytes - prect->width; destdelta = (vid.rowbytes >> 1) - prect->width; if (transparent) { for (i=0 ; i<prect->height ; i++) { for (j=0 ; j<prect->width ; j++) { t = *psrc; if (t != TRANSPARENT_COLOR) { *pdest = d_8to16table[t]; } psrc++; pdest++; } psrc += srcdelta; pdest += destdelta; } } else { for (i=0 ; i<prect->height ; i++) { for (j=0 ; j<prect->width ; j++) { *pdest = d_8to16table[*psrc]; psrc++; pdest++; } psrc += srcdelta; pdest += destdelta; } } } /* ============= Draw_TileClear This repeats a 64*64 tile graphic to fill the screen around a sized down refresh window. ============= */ void Draw_TileClear (int x, int y, int w, int h) { int width, height, tileoffsetx, tileoffsety; byte *psrc; vrect_t vr; r_rectdesc.rect.x = x; r_rectdesc.rect.y = y; r_rectdesc.rect.width = w; r_rectdesc.rect.height = h; vr.y = r_rectdesc.rect.y; height = r_rectdesc.rect.height; tileoffsety = vr.y % r_rectdesc.height; while (height > 0) { vr.x = r_rectdesc.rect.x; width = r_rectdesc.rect.width; if (tileoffsety != 0) vr.height = r_rectdesc.height - tileoffsety; else vr.height = r_rectdesc.height; if (vr.height > height) vr.height = height; tileoffsetx = vr.x % r_rectdesc.width; while (width > 0) { if (tileoffsetx != 0) vr.width = r_rectdesc.width - tileoffsetx; else vr.width = r_rectdesc.width; if (vr.width > width) vr.width = width; psrc = r_rectdesc.ptexbytes + (tileoffsety * r_rectdesc.rowbytes) + tileoffsetx; if (r_pixbytes == 1) { R_DrawRect8 (&vr, r_rectdesc.rowbytes, psrc, 0); } else { R_DrawRect16 (&vr, r_rectdesc.rowbytes, psrc, 0); } vr.x += vr.width; width -= vr.width; tileoffsetx = 0; // only the left tile can be left-clipped } vr.y += vr.height; height -= vr.height; tileoffsety = 0; // only the top tile can be top-clipped } } /* ============= Draw_Fill Fills a box of pixels with a single color ============= */ void Draw_Fill (int x, int y, int w, int h, int c) { byte *dest; unsigned short *pusdest; unsigned uc; int u, v; if (r_pixbytes == 1) { dest = vid.buffer + y*vid.rowbytes + x; for (v=0 ; v<h ; v++, dest += vid.rowbytes) for (u=0 ; u<w ; u++) dest[u] = c; } else { uc = d_8to16table[c]; pusdest = (unsigned short *)vid.buffer + y * (vid.rowbytes >> 1) + x; for (v=0 ; v<h ; v++, pusdest += (vid.rowbytes >> 1)) for (u=0 ; u<w ; u++) pusdest[u] = uc; } } //============================================================================= /* ================ Draw_FadeScreen ================ */ void Draw_FadeScreen (void) { int x,y; byte *pbuf; VID_UnlockBuffer (); S_ExtraUpdate (); VID_LockBuffer (); for (y=0 ; y<vid.height ; y++) { int t; pbuf = (byte *)(vid.buffer + vid.rowbytes*y); t = (y & 1) << 1; for (x=0 ; x<vid.width ; x++) { if ((x & 3) != t) pbuf[x] = 0; } } VID_UnlockBuffer (); S_ExtraUpdate (); VID_LockBuffer (); } //============================================================================= /* ================ Draw_BeginDisc Draws the little blue disc in the corner of the screen. Call before beginning any disc IO. ================ */ void Draw_BeginDisc (void) { D_BeginDirectRect (vid.width - 24, 0, draw_disc->data, 24, 24); } /* ================ Draw_EndDisc Erases the disc icon. Call after completing any disc IO ================ */ void Draw_EndDisc (void) { D_EndDirectRect (vid.width - 24, 0, 24, 24); }