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9599c98878
MozReview-Commit-ID: 1PTMg1c0KiC --HG-- extra : rebase_source : 49180fae34c1aa54d71f1cc060377c842834c3ac
69 lines
1.9 KiB
GLSL
69 lines
1.9 KiB
GLSL
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include shared,prim_shared
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flat varying int vGradientAddress;
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flat varying float vGradientRepeat;
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flat varying vec2 vScaledDir;
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flat varying vec2 vStartPoint;
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flat varying vec2 vTileSize;
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flat varying vec2 vTileRepeat;
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varying vec2 vPos;
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#ifdef WR_VERTEX_SHADER
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void main(void) {
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Primitive prim = load_primitive();
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Gradient gradient = fetch_gradient(prim.specific_prim_address);
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VertexInfo vi = write_vertex(prim.local_rect,
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prim.local_clip_rect,
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prim.z,
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prim.scroll_node,
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prim.task,
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prim.local_rect);
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vPos = vi.local_pos - prim.local_rect.p0;
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vec2 start_point = gradient.start_end_point.xy;
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vec2 end_point = gradient.start_end_point.zw;
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vec2 dir = end_point - start_point;
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vStartPoint = start_point;
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vScaledDir = dir / dot(dir, dir);
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vTileSize = gradient.tile_size_repeat.xy;
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vTileRepeat = gradient.tile_size_repeat.zw;
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vGradientAddress = prim.specific_prim_address + VECS_PER_GRADIENT;
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// Whether to repeat the gradient instead of clamping.
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vGradientRepeat = float(int(gradient.extend_mode.x) != EXTEND_MODE_CLAMP);
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write_clip(vi.screen_pos, prim.clip_area);
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}
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#endif
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#ifdef WR_FRAGMENT_SHADER
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void main(void) {
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vec2 pos = mod(vPos, vTileRepeat);
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if (pos.x >= vTileSize.x ||
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pos.y >= vTileSize.y) {
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discard;
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}
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float offset = dot(pos - vStartPoint, vScaledDir);
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vec4 color = sample_gradient(vGradientAddress,
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offset,
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vGradientRepeat);
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oFragColor = color * do_clip();
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}
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#endif
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