diff options
Diffstat (limited to 'src/riva_cursor.c')
| -rw-r--r-- | src/riva_cursor.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/riva_cursor.c b/src/riva_cursor.c new file mode 100644 index 0000000..7dcaed9 --- /dev/null +++ b/src/riva_cursor.c @@ -0,0 +1,165 @@ +/* + * Copyright 1996-1997 David J. McKay + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * DAVID J. MCKAY BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF + * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +/* Rewritten with reference from mga driver and 3.3.4 NVIDIA driver by + Jarno Paananen <jpaana@s2.org> */ + +/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/riva_cursor.c,v 1.1 2003/07/31 20:24:29 mvojkovi Exp $ */ + +#include "riva_include.h" + +#include "cursorstr.h" + +/****************************************************************************\ +* * +* HW Cursor Entrypoints * +* * +\****************************************************************************/ + +#define TRANSPARENT_PIXEL 0 + +#define ConvertToRGB555(c) \ +(((c & 0xf80000) >> 9 ) | ((c & 0xf800) >> 6 ) | ((c & 0xf8) >> 3 ) | 0x8000) + + +static void +RivaConvertCursor1555(RivaPtr pRiva, CARD32 *src, CARD16 *dst) +{ + CARD32 b, m; + int i, j; + + for ( i = 0; i < 32; i++ ) { + b = *src++; + m = *src++; + for ( j = 0; j < 32; j++ ) { + if ( m & 1 ) + *dst = ( b & 1) ? pRiva->curFg : pRiva->curBg; + else + *dst = TRANSPARENT_PIXEL; + b >>= 1; + m >>= 1; + dst++; + } + } +} + + +static void +RivaTransformCursor (RivaPtr pRiva) +{ + CARD32 *tmp; + int i, dwords; + + dwords = (32 * 32) >> 1; + if(!(tmp = ALLOCATE_LOCAL(dwords * 4))) return; + RivaConvertCursor1555(pRiva, pRiva->curImage, (CARD16*)tmp); + + for(i = 0; i < dwords; i++) + pRiva->riva.CURSOR[i] = tmp[i]; + + DEALLOCATE_LOCAL(tmp); +} + +static void +RivaLoadCursorImage( ScrnInfoPtr pScrn, unsigned char *src ) +{ + RivaPtr pRiva = RivaPTR(pScrn); + + /* save copy of image for color changes */ + memcpy(pRiva->curImage, src, 256); + + RivaTransformCursor(pRiva); +} + +static void +RivaSetCursorPosition(ScrnInfoPtr pScrn, int x, int y) +{ + RivaPtr pRiva = RivaPTR(pScrn); + + pRiva->riva.PRAMDAC[0x0000300/4] = (x & 0xFFFF) | (y << 16); +} + +static void +RivaSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg) +{ + RivaPtr pRiva = RivaPTR(pScrn); + CARD32 fore, back; + + fore = ConvertToRGB555(fg); + back = ConvertToRGB555(bg); + + if ((pRiva->curFg != fore) || (pRiva->curBg != back)) { + pRiva->curFg = fore; + pRiva->curBg = back; + + RivaTransformCursor(pRiva); + } +} + + +static void +RivaShowCursor(ScrnInfoPtr pScrn) +{ + RivaPtr pRiva = RivaPTR(pScrn); + /* Enable cursor - X-Windows mode */ + pRiva->riva.ShowHideCursor(&pRiva->riva, 1); +} + +static void +RivaHideCursor(ScrnInfoPtr pScrn) +{ + RivaPtr pRiva = RivaPTR(pScrn); + /* Disable cursor */ + pRiva->riva.ShowHideCursor(&pRiva->riva, 0); +} + +static Bool +RivaUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs) +{ + return TRUE; +} + + +Bool +RivaCursorInit(ScreenPtr pScreen) +{ + ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum]; + RivaPtr pRiva = RivaPTR(pScrn); + xf86CursorInfoPtr infoPtr; + + infoPtr = xf86CreateCursorInfoRec(); + if(!infoPtr) return FALSE; + + pRiva->CursorInfoRec = infoPtr; + + infoPtr->MaxWidth = infoPtr->MaxHeight = 32; + infoPtr->Flags = HARDWARE_CURSOR_TRUECOLOR_AT_8BPP | + HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_32; + infoPtr->SetCursorColors = RivaSetCursorColors; + infoPtr->SetCursorPosition = RivaSetCursorPosition; + infoPtr->LoadCursorImage = RivaLoadCursorImage; + infoPtr->HideCursor = RivaHideCursor; + infoPtr->ShowCursor = RivaShowCursor; + infoPtr->UseHWCursor = RivaUseHWCursor; + + return(xf86InitCursor(pScreen, infoPtr)); +} |