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