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-rw-r--r--src/glamor_compositerects.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/src/glamor_compositerects.c b/src/glamor_compositerects.c
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+/*
+ * Copyright © 2009 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ * Zhigang Gong <zhigang.gong@linux.intel.com>
+ *
+ * original author is Chris Wilson at sna.
+ *
+ */
+
+#include "glamor_priv.h"
+#include "mipict.h"
+#include "damage.h"
+
+/** @file glamor_compositerects.
+ *
+ * compositeRects acceleration implementation
+ */
+
+static int16_t bound(int16_t a, uint16_t b)
+{
+ int v = (int)a + (int)b;
+ if (v > MAXSHORT)
+ return MAXSHORT;
+ return v;
+}
+
+static Bool
+_pixman_region_init_clipped_rectangles(pixman_region16_t *region,
+ unsigned int num_rects,
+ xRectangle *rects,
+ int tx, int ty,
+ BoxPtr extents)
+{
+ pixman_box16_t stack_boxes[64], *boxes = stack_boxes;
+ pixman_bool_t ret;
+ unsigned int i, j;
+
+ if (num_rects > ARRAY_SIZE(stack_boxes)) {
+ boxes = malloc(sizeof(pixman_box16_t) * num_rects);
+ if (boxes == NULL)
+ return FALSE;
+ }
+
+ for (i = j = 0; i < num_rects; i++) {
+ boxes[j].x1 = rects[i].x + tx;
+ if (boxes[j].x1 < extents->x1)
+ boxes[j].x1 = extents->x1;
+
+ boxes[j].y1 = rects[i].y + ty;
+ if (boxes[j].y1 < extents->y1)
+ boxes[j].y1 = extents->y1;
+
+ boxes[j].x2 = bound(rects[i].x + tx, rects[i].width);
+ if (boxes[j].x2 > extents->x2)
+ boxes[j].x2 = extents->x2;
+
+ boxes[j].y2 = bound(rects[i].y + ty, rects[i].height);
+ if (boxes[j].y2 > extents->y2)
+ boxes[j].y2 = extents->y2;
+
+ if (boxes[j].x2 > boxes[j].x1 && boxes[j].y2 > boxes[j].y1)
+ j++;
+ }
+
+ ret = FALSE;
+ if (j)
+ ret = pixman_region_init_rects(region, boxes, j);
+
+ if (boxes != stack_boxes)
+ free(boxes);
+
+ DEBUGF("%s: nrects=%d, region=(%d, %d), (%d, %d) x %d\n",
+ __FUNCTION__, num_rects,
+ region->extents.x1, region->extents.y1,
+ region->extents.x2, region->extents.y2,
+ j);
+ return ret;
+}
+
+
+void
+glamor_composite_rectangles(CARD8 op,
+ PicturePtr dst,
+ xRenderColor *color,
+ int num_rects,
+ xRectangle *rects)
+{
+ PixmapPtr pixmap;
+ struct glamor_pixmap_private *priv;
+ pixman_region16_t region;
+ pixman_box16_t *boxes;
+ int dst_x, dst_y;
+ int num_boxes;
+ PicturePtr source = NULL;
+ Bool need_free_region = FALSE;
+
+ DEBUGF("%s(op=%d, %08x x %d [(%d, %d)x(%d, %d) ...])\n",
+ __FUNCTION__, op,
+ (color->alpha >> 8 << 24) |
+ (color->red >> 8 << 16) |
+ (color->green >> 8 << 8) |
+ (color->blue >> 8 << 0),
+ num_rects,
+ rects[0].x, rects[0].y, rects[0].width, rects[0].height);
+
+ if (!num_rects)
+ return;
+
+ if (region_is_empty(dst->pCompositeClip)) {
+ DEBUGF("%s: empty clip, skipping\n", __FUNCTION__);
+ return;
+ }
+
+ pixmap = glamor_get_drawable_pixmap(dst->pDrawable);
+ priv = glamor_get_pixmap_private(pixmap);
+
+ if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(priv))
+ goto fallback;
+ if (dst->alphaMap) {
+ DEBUGF("%s: fallback, dst has an alpha-map\n", __FUNCTION__);
+ goto fallback;
+ }
+
+ if ((color->red|color->green|color->blue|color->alpha) <= 0x00ff) {
+ switch (op) {
+ case PictOpOver:
+ case PictOpOutReverse:
+ case PictOpAdd:
+ return;
+ case PictOpInReverse:
+ case PictOpSrc:
+ op = PictOpClear;
+ break;
+ case PictOpAtopReverse:
+ op = PictOpOut;
+ break;
+ case PictOpXor:
+ op = PictOpOverReverse;
+ break;
+ }
+ }
+ if (color->alpha <= 0x00ff) {
+ switch (op) {
+ case PictOpOver:
+ case PictOpOutReverse:
+ return;
+ case PictOpInReverse:
+ op = PictOpClear;
+ break;
+ case PictOpAtopReverse:
+ op = PictOpOut;
+ break;
+ case PictOpXor:
+ op = PictOpOverReverse;
+ break;
+ }
+ } else if (color->alpha >= 0xff00) {
+ switch (op) {
+ case PictOpOver:
+ op = PictOpSrc;
+ break;
+ case PictOpInReverse:
+ return;
+ case PictOpOutReverse:
+ op = PictOpClear;
+ break;
+ case PictOpAtopReverse:
+ op = PictOpOverReverse;
+ break;
+ case PictOpXor:
+ op = PictOpOut;
+ break;
+ }
+ }
+ DEBUGF("%s: converted to op %d\n", __FUNCTION__, op);
+
+ if (!_pixman_region_init_clipped_rectangles(&region,
+ num_rects, rects,
+ dst->pDrawable->x,
+ dst->pDrawable->y,
+ &dst->pCompositeClip->extents))
+ {
+ DEBUGF("%s: allocation failed for region\n", __FUNCTION__);
+ return;
+ }
+
+ need_free_region = TRUE;
+
+ DEBUGF("%s: drawable extents (%d, %d),(%d, %d) x %d\n",
+ __FUNCTION__,
+ RegionExtents(&region)->x1, RegionExtents(&region)->y1,
+ RegionExtents(&region)->x2, RegionExtents(&region)->y2,
+ RegionNumRects(&region));
+
+ if (dst->pCompositeClip->data &&
+ (!pixman_region_intersect(&region, &region, dst->pCompositeClip) ||
+ region_is_empty(&region))) {
+ DEBUGF(("%s: zero-intersection between rectangles and clip\n",
+ __FUNCTION__));
+ pixman_region_fini(&region);
+ return;
+ }
+
+ DEBUGF("%s: clipped extents (%d, %d),(%d, %d) x %d\n",
+ __FUNCTION__,
+ RegionExtents(&region)->x1, RegionExtents(&region)->y1,
+ RegionExtents(&region)->x2, RegionExtents(&region)->y2,
+ RegionNumRects(&region));
+
+ glamor_get_drawable_deltas(dst->pDrawable, pixmap, &dst_x, &dst_y);
+ pixman_region_translate(&region, dst_x, dst_y);
+
+ DEBUGF("%s: pixmap +(%d, %d) extents (%d, %d),(%d, %d)\n",
+ __FUNCTION__, dst_x, dst_y,
+ RegionExtents(&region)->x1, RegionExtents(&region)->y1,
+ RegionExtents(&region)->x2, RegionExtents(&region)->y2);
+
+
+ boxes = pixman_region_rectangles(&region, &num_boxes);
+ if (op == PictOpSrc || op == PictOpClear) {
+ CARD32 pixel;
+ if (op == PictOpClear)
+ pixel = 0;
+ else
+ miRenderColorToPixel(dst->pFormat, color, &pixel);
+ glamor_solid_boxes(pixmap, boxes, num_boxes, pixel);
+
+ goto done;
+ } else {
+ if (likely(priv->type != GLAMOR_TEXTURE_LARGE)) {
+ int error;
+
+ source = CreateSolidPicture(0, color, &error);
+ if (!source)
+ goto done;
+ if (glamor_composite_clipped_region(op, source,
+ NULL, dst,
+ NULL, NULL, priv,
+ &region,
+ 0,0,0,0,0,0))
+ goto done;
+ }
+ }
+fallback:
+ miCompositeRects(op, dst, color, num_rects, rects);
+done:
+ /* XXX xserver-1.8: CompositeRects is not tracked by Damage, so we must
+ * manually append the damaged regions ourselves.
+ */
+ DamageRegionAppend(&pixmap->drawable, &region);
+ DamageRegionProcessPending(&pixmap->drawable);
+
+ if (need_free_region)
+ pixman_region_fini(&region);
+ if (source)
+ FreePicture(source, 0);
+ return;
+}
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