Initial revisionXORG-STABLE

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
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+/*
+ * 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));
+}