diff options
Diffstat (limited to 'xorg-server/glamor/glamor_polylines.c')
| -rw-r--r-- | xorg-server/glamor/glamor_polylines.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/xorg-server/glamor/glamor_polylines.c b/xorg-server/glamor/glamor_polylines.c new file mode 100644 index 000000000..e723e9500 --- /dev/null +++ b/xorg-server/glamor/glamor_polylines.c @@ -0,0 +1,135 @@ +/* + * Copyright © 2009 Intel Corporation + * Copyright © 1998 Keith Packard + * + * 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: + * Eric Anholt <eric@anholt.net> + * + */ + +#include "glamor_priv.h" + +/** @file glamor_polylines.c + * + * GC PolyFillRect implementation, taken straight from fb_fill.c + */ + +/** + * glamor_poly_lines() checks if it can accelerate the lines as a group of + * horizontal or vertical lines (rectangles), and uses existing rectangle fill + * acceleration if so. + */ +static Bool +_glamor_poly_lines(DrawablePtr drawable, GCPtr gc, int mode, int n, + DDXPointPtr points, Bool fallback) +{ + xRectangle *rects; + int x1, x2, y1, y2; + int i; + + /* Don't try to do wide lines or non-solid fill style. */ + if (gc->lineWidth != 0) { + /* This ends up in miSetSpans, which is accelerated as well as we + * can hope X wide lines will be. + */ + goto wide_line; + } + if (gc->lineStyle != LineSolid) { + glamor_fallback + ("non-solid fill line style %d\n", + gc->lineStyle); + goto fail; + } + rects = malloc(sizeof(xRectangle) * (n - 1)); + x1 = points[0].x; + y1 = points[0].y; + /* If we have any non-horizontal/vertical, fall back. */ + for (i = 0; i < n - 1; i++) { + if (mode == CoordModePrevious) { + x2 = x1 + points[i + 1].x; + y2 = y1 + points[i + 1].y; + } else { + x2 = points[i + 1].x; + y2 = points[i + 1].y; + } + if (x1 != x2 && y1 != y2) { + free(rects); + glamor_fallback("stub diagonal poly_line\n"); + goto fail; + } + if (x1 < x2) { + rects[i].x = x1; + rects[i].width = x2 - x1 + 1; + } else { + rects[i].x = x2; + rects[i].width = x1 - x2 + 1; + } + if (y1 < y2) { + rects[i].y = y1; + rects[i].height = y2 - y1 + 1; + } else { + rects[i].y = y2; + rects[i].height = y1 - y2 + 1; + } + + x1 = x2; + y1 = y2; + } + gc->ops->PolyFillRect(drawable, gc, n - 1, rects); + free(rects); + return TRUE; + + fail: + if (!fallback + && glamor_ddx_fallback_check_pixmap(drawable) + && glamor_ddx_fallback_check_gc(gc)) + return FALSE; + + if (gc->lineWidth == 0) { + if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW)) { + if (glamor_prepare_access_gc(gc)) { + fbPolyLine(drawable, gc, mode, n, points); + glamor_finish_access_gc(gc); + } + glamor_finish_access(drawable, GLAMOR_ACCESS_RW); + } + } else { +wide_line: + /* fb calls mi functions in the lineWidth != 0 case. */ + fbPolyLine(drawable, gc, mode, n, points); + } + return TRUE; +} + +void +glamor_poly_lines(DrawablePtr drawable, GCPtr gc, int mode, int n, + DDXPointPtr points) +{ + _glamor_poly_lines(drawable, gc, mode, n, points, TRUE); +} + +Bool +glamor_poly_lines_nf(DrawablePtr drawable, GCPtr gc, int mode, int n, + DDXPointPtr points) +{ + return _glamor_poly_lines(drawable, gc, mode, n, points, FALSE); +} |