sync code with last improvements from OpenBSD

2023-08-28 05:57:34 +00:00 · 2023-08-28 05:57:34 +00:00 · 88965415ff
commit 88965415ff
26235 changed files with 29195616 additions and 0 deletions
--- a/xserver/fb/fbgc.c
+++ b/xserver/fb/fbgc.c
@ -0,0 +1,183 @@
+/*
+ * Copyright © 1998 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdlib.h>
+
+#include "fb.h"
+
+const GCFuncs fbGCFuncs = {
+    fbValidateGC,
+    miChangeGC,
+    miCopyGC,
+    miDestroyGC,
+    miChangeClip,
+    miDestroyClip,
+    miCopyClip,
+};
+
+const GCOps fbGCOps = {
+    fbFillSpans,
+    fbSetSpans,
+    fbPutImage,
+    fbCopyArea,
+    fbCopyPlane,
+    fbPolyPoint,
+    fbPolyLine,
+    fbPolySegment,
+    fbPolyRectangle,
+    fbPolyArc,
+    miFillPolygon,
+    fbPolyFillRect,
+    fbPolyFillArc,
+    miPolyText8,
+    miPolyText16,
+    miImageText8,
+    miImageText16,
+    fbImageGlyphBlt,
+    fbPolyGlyphBlt,
+    fbPushPixels
+};
+
+Bool
+fbCreateGC(GCPtr pGC)
+{
+    pGC->ops = (GCOps *) &fbGCOps;
+    pGC->funcs = (GCFuncs *) &fbGCFuncs;
+
+    /* fb wants to translate before scan conversion */
+    pGC->miTranslate = 1;
+    pGC->fExpose = 1;
+
+    return TRUE;
+}
+
+/*
+ * Pad pixmap to FB_UNIT bits wide
+ */
+void
+fbPadPixmap(PixmapPtr pPixmap)
+{
+    int width;
+    FbBits *bits;
+    FbBits b;
+    FbBits mask;
+    int height;
+    int w;
+    int stride;
+    int bpp;
+    _X_UNUSED int xOff, yOff;
+
+    fbGetDrawable(&pPixmap->drawable, bits, stride, bpp, xOff, yOff);
+
+    width = pPixmap->drawable.width * pPixmap->drawable.bitsPerPixel;
+    height = pPixmap->drawable.height;
+    mask = FbBitsMask(0, width);
+    while (height--) {
+        b = READ(bits) & mask;
+        w = width;
+        while (w < FB_UNIT) {
+            b = b | FbScrRight(b, w);
+            w <<= 1;
+        }
+        WRITE(bits, b);
+        bits += stride;
+    }
+
+    fbFinishAccess(&pPixmap->drawable);
+}
+
+void
+fbValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable)
+{
+    FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
+    FbBits mask;
+
+    /*
+     * if the client clip is different or moved OR the subwindowMode has
+     * changed OR the window's clip has changed since the last validation
+     * we need to recompute the composite clip
+     */
+
+    if ((changes &
+         (GCClipXOrigin | GCClipYOrigin | GCClipMask | GCSubwindowMode)) ||
+        (pDrawable->serialNumber != (pGC->serialNumber & DRAWABLE_SERIAL_BITS))
+        ) {
+        miComputeCompositeClip(pGC, pDrawable);
+    }
+
+    if (changes & GCTile) {
+        if (!pGC->tileIsPixel &&
+            FbEvenTile(pGC->tile.pixmap->drawable.width *
+                       pDrawable->bitsPerPixel))
+            fbPadPixmap(pGC->tile.pixmap);
+    }
+    if (changes & GCStipple) {
+        if (pGC->stipple) {
+            if (pGC->stipple->drawable.width * pDrawable->bitsPerPixel <
+                FB_UNIT)
+                fbPadPixmap(pGC->stipple);
+        }
+    }
+    /*
+     * Recompute reduced rop values
+     */
+    if (changes & (GCForeground | GCBackground | GCPlaneMask | GCFunction)) {
+        int s;
+        FbBits depthMask;
+
+        mask = FbFullMask(pDrawable->bitsPerPixel);
+        depthMask = FbFullMask(pDrawable->depth);
+
+        pPriv->fg = pGC->fgPixel & mask;
+        pPriv->bg = pGC->bgPixel & mask;
+
+        if ((pGC->planemask & depthMask) == depthMask)
+            pPriv->pm = mask;
+        else
+            pPriv->pm = pGC->planemask & mask;
+
+        s = pDrawable->bitsPerPixel;
+        while (s < FB_UNIT) {
+            pPriv->fg |= pPriv->fg << s;
+            pPriv->bg |= pPriv->bg << s;
+            pPriv->pm |= pPriv->pm << s;
+            s <<= 1;
+        }
+        pPriv->and = fbAnd(pGC->alu, pPriv->fg, pPriv->pm);
+        pPriv->xor = fbXor(pGC->alu, pPriv->fg, pPriv->pm);
+        pPriv->bgand = fbAnd(pGC->alu, pPriv->bg, pPriv->pm);
+        pPriv->bgxor = fbXor(pGC->alu, pPriv->bg, pPriv->pm);
+    }
+    if (changes & GCDashList) {
+        unsigned short n = pGC->numInDashList;
+        unsigned char *dash = pGC->dash;
+        unsigned int dashLength = 0;
+
+        while (n--)
+            dashLength += (unsigned int) *dash++;
+        pPriv->dashLength = dashLength;
+    }
+}