35 lines
1.2 KiB
GLSL
35 lines
1.2 KiB
GLSL
// pathfinder/shaders/gles2/demo-3d-distant-glyph.vs.glsl
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//
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// Copyright (c) 2017 The Pathfinder Project Developers.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Renders cached textures of distant glyphs in the 3D demo.
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precision highp float;
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/// A concatenated transform to be applied to each point.
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uniform mat4 uTransform;
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/// The texture coordinates for this glyph.
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uniform vec4 uGlyphTexCoords;
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/// The size of the glyph in local coordinates.
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uniform vec2 uGlyphSize;
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/// The abstract quad position: (0.0, 0.0) to (1.0, 1.0).
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attribute vec2 aQuadPosition;
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// The world-space 2D position of this vertex.
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attribute vec2 aPosition;
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/// The texture coordinate.
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varying vec2 vTexCoord;
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void main() {
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vec2 positionBL = aPosition, positionTR = aPosition + uGlyphSize;
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gl_Position = uTransform * vec4(mix(positionBL, positionTR, aQuadPosition), 0.0, 1.0);
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vTexCoord = mix(uGlyphTexCoords.xy, uGlyphTexCoords.zw, aQuadPosition);
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}
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