From 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 03:47:29 +0200 Subject: Adding upstream version 115.8.0esr. Signed-off-by: Daniel Baumann --- gfx/wr/webrender/res/rect.glsl | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 gfx/wr/webrender/res/rect.glsl (limited to 'gfx/wr/webrender/res/rect.glsl') diff --git a/gfx/wr/webrender/res/rect.glsl b/gfx/wr/webrender/res/rect.glsl new file mode 100644 index 0000000000..2a080ee393 --- /dev/null +++ b/gfx/wr/webrender/res/rect.glsl @@ -0,0 +1,40 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +struct RectWithSize { + vec2 p0; + vec2 size; +}; + +struct RectWithEndpoint { + vec2 p0; + vec2 p1; +}; + +float point_inside_rect(vec2 p, vec2 p0, vec2 p1) { + vec2 s = step(p0, p) - step(p1, p); + return s.x * s.y; +} + +vec2 signed_distance_rect_xy(vec2 pos, vec2 p0, vec2 p1) { + // Instead of using a true signed distance to rect here, we just use the + // simpler approximation of the maximum distance on either axis from the + // outside of the rectangle. This avoids expensive use of length() and only + // causes mostly imperceptible differences at corner pixels. + return max(p0 - pos, pos - p1); +} + +float signed_distance_rect(vec2 pos, vec2 p0, vec2 p1) { + // Collapse the per-axis distances to edges to a single approximate value. + vec2 d = signed_distance_rect_xy(pos, p0, p1); + return max(d.x, d.y); +} + +vec2 rect_clamp(RectWithEndpoint rect, vec2 pt) { + return clamp(pt, rect.p0, rect.p1); +} + +vec2 rect_size(RectWithEndpoint rect) { + return rect.p1 - rect.p0; +} -- cgit v1.2.3