зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
2.5 KiB
GLSL
69 строки
2.5 KiB
GLSL
#line 1
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/* 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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#define RENDER_MODE_MONO 0
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#define RENDER_MODE_ALPHA 1
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#define RENDER_MODE_SUBPIXEL 2
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void main(void) {
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Primitive prim = load_primitive();
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TextRun text = fetch_text_run(prim.specific_prim_address);
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int glyph_index = prim.user_data0;
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int render_mode = prim.user_data1;
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int resource_address = prim.user_data2;
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Glyph glyph = fetch_glyph(prim.specific_prim_address, glyph_index);
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GlyphResource res = fetch_glyph_resource(resource_address);
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switch (render_mode) {
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case RENDER_MODE_ALPHA:
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break;
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case RENDER_MODE_MONO:
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break;
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case RENDER_MODE_SUBPIXEL:
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// In subpixel mode, the subpixel offset has already been
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// accounted for while rasterizing the glyph.
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glyph.offset = trunc(glyph.offset);
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break;
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}
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vec2 local_pos = glyph.offset +
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text.offset +
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vec2(res.offset.x, -res.offset.y) / uDevicePixelRatio;
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RectWithSize local_rect = RectWithSize(local_pos,
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(res.uv_rect.zw - res.uv_rect.xy) / uDevicePixelRatio);
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#ifdef WR_FEATURE_TRANSFORM
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TransformVertexInfo vi = write_transform_vertex(local_rect,
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prim.local_clip_rect,
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prim.z,
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prim.layer,
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prim.task,
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local_rect);
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vLocalPos = vi.local_pos;
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vec2 f = (vi.local_pos.xy / vi.local_pos.z - local_rect.p0) / local_rect.size;
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#else
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VertexInfo vi = write_vertex(local_rect,
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prim.local_clip_rect,
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prim.z,
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prim.layer,
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prim.task,
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local_rect);
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vec2 f = (vi.local_pos - local_rect.p0) / local_rect.size;
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#endif
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write_clip(vi.screen_pos, prim.clip_area);
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vec2 texture_size = vec2(textureSize(sColor0, 0));
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vec2 st0 = res.uv_rect.xy / texture_size;
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vec2 st1 = res.uv_rect.zw / texture_size;
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vColor = text.color;
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vUv = mix(st0, st1, f);
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vUvBorder = (res.uv_rect + vec4(0.5, 0.5, -0.5, -0.5)) / texture_size.xyxy;
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}
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