419 lines
8.4 KiB
C
419 lines
8.4 KiB
C
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/*
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** This handles DIB section management under Windows.
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*/
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#include "quakedef.h"
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#include "winquake.h"
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#include "r_local.h"
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void DIB_Shutdown( void );
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#ifndef _WIN32
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# error You should not be trying to compile this file on this platform
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#endif
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HDC mainhDC, hdcDIBSection;
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HBITMAP hDIBSection;
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HPALETTE hPal, hpalOld;
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qbyte *pDIBBase;
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extern qboolean vid_palettized;
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extern cvar_t vid_use32bit;
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static qboolean s_systemcolors_saved;
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extern int redbits, redshift;
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extern int greenbits, greenshift;
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extern int bluebits, blueshift;
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static HGDIOBJ previously_selected_GDI_obj;
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static int s_syspalindices[] =
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{
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COLOR_ACTIVEBORDER,
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COLOR_ACTIVECAPTION,
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COLOR_APPWORKSPACE,
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COLOR_BACKGROUND,
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COLOR_BTNFACE,
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COLOR_BTNSHADOW,
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COLOR_BTNTEXT,
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COLOR_CAPTIONTEXT,
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COLOR_GRAYTEXT,
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COLOR_HIGHLIGHT,
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COLOR_HIGHLIGHTTEXT,
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COLOR_INACTIVEBORDER,
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COLOR_INACTIVECAPTION,
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COLOR_MENU,
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COLOR_MENUTEXT,
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COLOR_SCROLLBAR,
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COLOR_WINDOW,
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COLOR_WINDOWFRAME,
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COLOR_WINDOWTEXT
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};
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#define NUM_SYS_COLORS ( sizeof( s_syspalindices ) / sizeof( int ) )
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static COLORREF s_oldsyscolors[NUM_SYS_COLORS];
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typedef struct dibinfo
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{
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BITMAPINFOHEADER header;
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RGBQUAD acolors[256];
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} dibinfo_t;
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typedef struct
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{
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WORD palVersion;
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WORD palNumEntries;
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PALETTEENTRY palEntries[256];
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} identitypalette_t;
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static identitypalette_t s_ipal;
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static void DIB_SaveSystemColors( void );
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static void DIB_RestoreSystemColors( void );
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/*
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** DIB_Init
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**
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** Builds our DIB section
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*/
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qboolean DIB_Init( unsigned char **ppbuffer, int *ppitch )
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{
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dibinfo_t dibheader;
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BITMAPINFO *pbmiDIB = ( BITMAPINFO * ) &dibheader;
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int i;
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memset( &dibheader, 0, sizeof( dibheader ) );
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/*
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** grab a DC
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*/
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if ( !mainhDC )
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{
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if ( ( mainhDC = GetDC( mainwindow ) ) == NULL )
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return false;
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}
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/*
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** figure out if we're running in an 8-bit display mode
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*/
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if ( GetDeviceCaps( mainhDC, RASTERCAPS ) & RC_PALETTE )
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{
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vid_palettized = true;
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// save system colors
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if ( !s_systemcolors_saved )
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{
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DIB_SaveSystemColors();
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s_systemcolors_saved = true;
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}
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}
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else
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{
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vid_palettized = false;
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}
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/*
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** fill in the BITMAPINFO struct
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*/
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pbmiDIB->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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pbmiDIB->bmiHeader.biWidth = vid.width;
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pbmiDIB->bmiHeader.biHeight = vid.height;
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pbmiDIB->bmiHeader.biPlanes = 1;
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pbmiDIB->bmiHeader.biBitCount = r_pixbytes*8;
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pbmiDIB->bmiHeader.biCompression = BI_RGB;
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pbmiDIB->bmiHeader.biSizeImage = 0;
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pbmiDIB->bmiHeader.biXPelsPerMeter = 0;
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pbmiDIB->bmiHeader.biYPelsPerMeter = 0;
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pbmiDIB->bmiHeader.biClrUsed = 0;
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pbmiDIB->bmiHeader.biClrImportant = 0;
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/*
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** fill in the palette
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*/
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for ( i = 0; i < 256; i++ )
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{
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dibheader.acolors[i].rgbRed = ( d_8to24rgbtable[i] >> 0 ) & 0xff;
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dibheader.acolors[i].rgbGreen = ( d_8to24rgbtable[i] >> 8 ) & 0xff;
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dibheader.acolors[i].rgbBlue = ( d_8to24rgbtable[i] >> 16 ) & 0xff;
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}
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/*
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** create the DIB section
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*/
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hDIBSection = CreateDIBSection( mainhDC,
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pbmiDIB,
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DIB_RGB_COLORS,
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(void**)&pDIBBase,
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NULL,
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0 );
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if ( hDIBSection == NULL )
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{
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Con_Printf( "DIB_Init() - CreateDIBSection failed\n" );
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goto fail;
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}
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if ( pbmiDIB->bmiHeader.biHeight > 0 )
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{
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// bottom up
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*ppbuffer = pDIBBase + ( vid.height - 1 ) * vid.width * r_pixbytes;
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*ppitch = -(int)vid.width;
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}
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else
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{
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// top down
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*ppbuffer = pDIBBase;
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*ppitch = vid.width;
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}
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/*
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** clear the DIB memory buffer
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*/
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memset( pDIBBase, 0xff, vid.width * vid.height * r_pixbytes);
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if ( ( hdcDIBSection = CreateCompatibleDC( mainhDC ) ) == NULL )
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{
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Con_Printf( "DIB_Init() - CreateCompatibleDC failed\n" );
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goto fail;
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}
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if ( ( previously_selected_GDI_obj = SelectObject( hdcDIBSection, hDIBSection ) ) == NULL )
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{
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Con_Printf( "DIB_Init() - SelectObject failed\n" );
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goto fail;
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}
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redbits = 5; redshift=10;
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greenbits = 5; greenshift=5;
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bluebits = 5; blueshift=0;
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return true;
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fail:
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DIB_Shutdown();
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return false;
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}
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void DIB_Resized(void)
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{
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}
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/*
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** DIB_SetPalette
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**
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** Sets the color table in our DIB section, and also sets the system palette
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** into an identity mode if we're running in an 8-bit palettized display mode.
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**
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** The palette is expected to be 1024 bytes, in the format:
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**
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** R = offset 0
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** G = offset 1
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** B = offset 2
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** A = offset 3
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*/
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void DIB_SetPalette( const unsigned char *_pal )
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{
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const unsigned char *pal = _pal;
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LOGPALETTE *pLogPal = ( LOGPALETTE * ) &s_ipal;
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RGBQUAD colors[256];
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int i;
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int ret;
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HDC hDC = mainhDC;
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/*
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** set the DIB color table
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*/
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if (r_pixbytes == 1 && hdcDIBSection )
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{
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for ( i = 0; i < 256; i++, pal += 3 )
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{
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colors[i].rgbRed = pal[0];
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colors[i].rgbGreen = pal[1];
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colors[i].rgbBlue = pal[2];
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colors[i].rgbReserved = 0;
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}
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/*
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colors[0].rgbRed = 0;
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colors[0].rgbGreen = 0;
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colors[0].rgbBlue = 0;
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colors[255].rgbRed = 0xff;
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colors[255].rgbGreen = 0xff;
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colors[255].rgbBlue = 0xff;
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*/
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if ( SetDIBColorTable( hdcDIBSection, 0, 256, colors ) == 0 )
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{
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Con_Printf( "DIB_SetPalette() - SetDIBColorTable failed\n" );
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}
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}
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/*
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** for 8-bit color desktop modes we set up the palette for maximum
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** speed by going into an identity palette mode.
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*/
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if ( vid_palettized )
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{
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int i;
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HPALETTE hpalOld;
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if ( SetSystemPaletteUse( hDC, SYSPAL_NOSTATIC ) == SYSPAL_ERROR )
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{
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Sys_Error( "DIB_SetPalette() - SetSystemPaletteUse() failed\n" );
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}
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/*
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** destroy our old palette
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*/
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if ( hPal )
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{
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DeleteObject( hPal );
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hPal = 0;
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}
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/*
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** take up all physical palette entries to flush out anything that's currently
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** in the palette
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*/
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pLogPal->palVersion = 0x300;
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pLogPal->palNumEntries = 256;
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for ( i = 0, pal = _pal; i < 256; i++, pal += 3 )
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{
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pLogPal->palPalEntry[i].peRed = pal[0];
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pLogPal->palPalEntry[i].peGreen = pal[1];
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pLogPal->palPalEntry[i].peBlue = pal[2];
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pLogPal->palPalEntry[i].peFlags = PC_RESERVED | PC_NOCOLLAPSE;
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}
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/* if they're using 8-bpp desktop with 8-bpp renderer keep black/white
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constant so windows is partially usable? */
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pLogPal->palPalEntry[0].peRed = 0;
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pLogPal->palPalEntry[0].peGreen = 0;
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pLogPal->palPalEntry[0].peBlue = 0;
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pLogPal->palPalEntry[0].peFlags = 0;
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pLogPal->palPalEntry[255].peRed = 0xff;
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pLogPal->palPalEntry[255].peGreen = 0xff;
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pLogPal->palPalEntry[255].peBlue = 0xff;
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pLogPal->palPalEntry[255].peFlags = 0;
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if ( ( hPal = CreatePalette( pLogPal ) ) == NULL )
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{
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Sys_Error( "DIB_SetPalette() - CreatePalette failed(%x)\n", GetLastError() );
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}
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if ( ( hpalOld = SelectPalette( hDC, hPal, FALSE ) ) == NULL )
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{
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Sys_Error( "DIB_SetPalette() - SelectPalette failed(%x)\n",GetLastError() );
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}
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/*
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if ( hpalOld == NULL )
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hpalOld = hpalOld;
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*/
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if ( ( ret = RealizePalette( hDC ) ) != pLogPal->palNumEntries )
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{
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Sys_Error( "DIB_SetPalette() - RealizePalette set %d entries\n", ret );
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}
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}
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}
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/*
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** DIB_Shutdown
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*/
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void DIB_Shutdown( void )
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{
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if ( vid_palettized && s_systemcolors_saved )
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DIB_RestoreSystemColors();
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if ( hPal )
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{
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DeleteObject( hPal );
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hPal = NULL;
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}
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if ( hpalOld )
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{
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SelectPalette( mainhDC, hpalOld, FALSE );
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RealizePalette( mainhDC );
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hpalOld = NULL;
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}
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if ( hdcDIBSection )
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{
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SelectObject( hdcDIBSection, previously_selected_GDI_obj );
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DeleteDC( hdcDIBSection );
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hdcDIBSection = NULL;
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}
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if ( hDIBSection )
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{
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DeleteObject( hDIBSection );
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hDIBSection = NULL;
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pDIBBase = NULL;
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}
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if ( mainhDC )
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{
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ReleaseDC( mainwindow, mainhDC );
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mainhDC = 0;
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}
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}
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/*
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** DIB_Save/RestoreSystemColors
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*/
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static void DIB_RestoreSystemColors( void )
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{
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SetSystemPaletteUse( mainhDC, SYSPAL_STATIC );
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SetSysColors( NUM_SYS_COLORS, s_syspalindices, s_oldsyscolors );
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}
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static void DIB_SaveSystemColors( void )
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{
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int i;
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for ( i = 0; i < NUM_SYS_COLORS; i++ )
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s_oldsyscolors[i] = GetSysColor( s_syspalindices[i] );
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}
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void DIB_SwapBuffers(void)
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{
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extern float usingstretch;
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if ( vid_palettized )
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{
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// holdpal = SelectPalette(hdcScreen, hpalDIB, FALSE);
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// RealizePalette(hdcScreen);
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}
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if (usingstretch == 1)
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BitBlt( mainhDC,
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0, 0,
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vid.width,
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vid.height,
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hdcDIBSection,
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0, 0,
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SRCCOPY );
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else
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StretchBlt( mainhDC, //Why is StretchBlt not optimised for a scale of 2? Surly that would be a frequently used quantity?
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0, 0,
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vid.width*usingstretch,
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vid.height*usingstretch,
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hdcDIBSection,
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0, 0,
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vid.width, vid.height,
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SRCCOPY );
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if ( vid_palettized )
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{
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// SelectPalette(hdcScreen, holdpal, FALSE);
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}
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}
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