sync code with last improvements from OpenBSD

xserver/fb/fbtrap.c

@@ -0,0 +1,185 @@
+/*
+ * Copyright © 2004 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 "fb.h"
+
+#include "picturestr.h"
+#include "mipict.h"
+#include "fbpict.h"
+#include "damage.h"
+
+void
+fbAddTraps(PicturePtr pPicture,
+           INT16 x_off, INT16 y_off, int ntrap, xTrap * traps)
+{
+    pixman_image_t *image;
+    int dst_xoff, dst_yoff;
+
+    if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
+        return;
+
+    pixman_add_traps(image, x_off + dst_xoff, y_off + dst_yoff,
+                     ntrap, (pixman_trap_t *) traps);
+
+    free_pixman_pict(pPicture, image);
+}
+
+void
+fbRasterizeTrapezoid(PicturePtr pPicture,
+                     xTrapezoid * trap, int x_off, int y_off)
+{
+    pixman_image_t *image;
+    int dst_xoff, dst_yoff;
+
+    if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
+        return;
+
+    pixman_rasterize_trapezoid(image, (pixman_trapezoid_t *) trap,
+                               x_off + dst_xoff, y_off + dst_yoff);
+
+    free_pixman_pict(pPicture, image);
+}
+
+void
+fbAddTriangles(PicturePtr pPicture,
+               INT16 x_off, INT16 y_off, int ntri, xTriangle * tris)
+{
+    pixman_image_t *image;
+    int dst_xoff, dst_yoff;
+
+    if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
+        return;
+
+    pixman_add_triangles(image,
+                         dst_xoff + x_off, dst_yoff + y_off,
+                         ntri, (pixman_triangle_t *) tris);
+
+    free_pixman_pict(pPicture, image);
+}
+
+typedef void (*CompositeShapesFunc) (pixman_op_t op,
+                                     pixman_image_t * src,
+                                     pixman_image_t * dst,
+                                     pixman_format_code_t mask_format,
+                                     int x_src, int y_src,
+                                     int x_dst, int y_dst,
+                                     int n_shapes, const uint8_t * shapes);
+
+static void
+fbShapes(CompositeShapesFunc composite,
+         pixman_op_t op,
+         PicturePtr pSrc,
+         PicturePtr pDst,
+         PictFormatPtr maskFormat,
+         int16_t xSrc,
+         int16_t ySrc, int nshapes, int shape_size, const uint8_t * shapes)
+{
+    pixman_image_t *src, *dst;
+    int src_xoff, src_yoff;
+    int dst_xoff, dst_yoff;
+
+    miCompositeSourceValidate(pSrc);
+
+    src = image_from_pict(pSrc, FALSE, &src_xoff, &src_yoff);
+    dst = image_from_pict(pDst, TRUE, &dst_xoff, &dst_yoff);
+
+    if (src && dst) {
+        pixman_format_code_t format;
+
+        DamageRegionAppend(pDst->pDrawable, pDst->pCompositeClip);
+
+        if (!maskFormat) {
+            int i;
+
+            if (pDst->polyEdge == PolyEdgeSharp)
+                format = PIXMAN_a1;
+            else
+                format = PIXMAN_a8;
+
+            for (i = 0; i < nshapes; ++i) {
+                composite(op, src, dst, format,
+                          xSrc + src_xoff,
+                          ySrc + src_yoff,
+                          dst_xoff, dst_yoff, 1, shapes + i * shape_size);
+            }
+        }
+        else {
+            switch (PICT_FORMAT_A(maskFormat->format)) {
+            case 1:
+                format = PIXMAN_a1;
+                break;
+
+            case 4:
+                format = PIXMAN_a4;
+                break;
+
+            default:
+            case 8:
+                format = PIXMAN_a8;
+                break;
+            }
+
+            composite(op, src, dst, format,
+                      xSrc + src_xoff,
+                      ySrc + src_yoff, dst_xoff, dst_yoff, nshapes, shapes);
+        }
+
+        DamageRegionProcessPending(pDst->pDrawable);
+    }
+
+    free_pixman_pict(pSrc, src);
+    free_pixman_pict(pDst, dst);
+}
+
+void
+fbTrapezoids(CARD8 op,
+             PicturePtr pSrc,
+             PicturePtr pDst,
+             PictFormatPtr maskFormat,
+             INT16 xSrc, INT16 ySrc, int ntrap, xTrapezoid * traps)
+{
+    xSrc -= (traps[0].left.p1.x >> 16);
+    ySrc -= (traps[0].left.p1.y >> 16);
+
+    fbShapes((CompositeShapesFunc) pixman_composite_trapezoids,
+             op, pSrc, pDst, maskFormat,
+             xSrc, ySrc, ntrap, sizeof(xTrapezoid), (const uint8_t *) traps);
+}
+
+void
+fbTriangles(CARD8 op,
+            PicturePtr pSrc,
+            PicturePtr pDst,
+            PictFormatPtr maskFormat,
+            INT16 xSrc, INT16 ySrc, int ntris, xTriangle * tris)
+{
+    xSrc -= (tris[0].p1.x >> 16);
+    ySrc -= (tris[0].p1.y >> 16);
+
+    fbShapes((CompositeShapesFunc) pixman_composite_triangles,
+             op, pSrc, pDst, maskFormat,
+             xSrc, ySrc, ntris, sizeof(xTriangle), (const uint8_t *) tris);
+}