137 lines
4.0 KiB
C
137 lines
4.0 KiB
C
/*
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* Copyright © 2009 Intel Corporation
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* Copyright © 1998 Keith Packard
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#include "glamor_priv.h"
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/** @file glamor_polylines.c
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*
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* GC PolyFillRect implementation, taken straight from fb_fill.c
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*/
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/**
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* glamor_poly_lines() checks if it can accelerate the lines as a group of
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* horizontal or vertical lines (rectangles), and uses existing rectangle fill
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* acceleration if so.
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*/
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static Bool
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_glamor_poly_lines(DrawablePtr drawable, GCPtr gc, int mode, int n,
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DDXPointPtr points, Bool fallback)
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{
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xRectangle *rects;
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int x1, x2, y1, y2;
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int i;
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/* Don't try to do wide lines or non-solid fill style. */
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if (gc->lineWidth != 0) {
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/* This ends up in miSetSpans, which is accelerated as well as we
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* can hope X wide lines will be.
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*/
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goto fail;
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}
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if (gc->lineStyle != LineSolid) {
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glamor_fallback("non-solid fill line style %d\n", gc->lineStyle);
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goto fail;
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}
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rects = malloc(sizeof(xRectangle) * (n - 1));
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x1 = points[0].x;
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y1 = points[0].y;
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/* If we have any non-horizontal/vertical, fall back. */
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for (i = 0; i < n - 1; i++) {
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if (mode == CoordModePrevious) {
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x2 = x1 + points[i + 1].x;
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y2 = y1 + points[i + 1].y;
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}
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else {
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x2 = points[i + 1].x;
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y2 = points[i + 1].y;
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}
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if (x1 != x2 && y1 != y2) {
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free(rects);
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glamor_fallback("stub diagonal poly_line\n");
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goto fail;
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}
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if (x1 < x2) {
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rects[i].x = x1;
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rects[i].width = x2 - x1 + 1;
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}
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else {
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rects[i].x = x2;
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rects[i].width = x1 - x2 + 1;
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}
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if (y1 < y2) {
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rects[i].y = y1;
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rects[i].height = y2 - y1 + 1;
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}
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else {
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rects[i].y = y2;
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rects[i].height = y1 - y2 + 1;
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}
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x1 = x2;
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y1 = y2;
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}
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gc->ops->PolyFillRect(drawable, gc, n - 1, rects);
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free(rects);
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return TRUE;
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fail:
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if (!fallback && glamor_ddx_fallback_check_pixmap(drawable)
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&& glamor_ddx_fallback_check_gc(gc))
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return FALSE;
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switch (gc->lineStyle) {
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case LineSolid:
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if (gc->lineWidth == 0)
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miZeroLine(drawable, gc, mode, n, points);
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else
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miWideLine(drawable, gc, mode, n, points);
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break;
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case LineOnOffDash:
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case LineDoubleDash:
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miWideDash(drawable, gc, mode, n, points);
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break;
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}
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return TRUE;
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}
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void
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glamor_poly_lines(DrawablePtr drawable, GCPtr gc, int mode, int n,
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DDXPointPtr points)
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{
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_glamor_poly_lines(drawable, gc, mode, n, points, TRUE);
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}
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Bool
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glamor_poly_lines_nf(DrawablePtr drawable, GCPtr gc, int mode, int n,
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DDXPointPtr points)
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{
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return _glamor_poly_lines(drawable, gc, mode, n, points, FALSE);
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}
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