34 lines
951 B
GLSL
34 lines
951 B
GLSL
// pathfinder/shaders/gles2/blit.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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//! A trivial shader that does nothing more than blit a texture.
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precision mediump float;
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/// A 3D transform to apply to the scene.
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uniform mat4 uTransform;
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/// A pair of fixed scale factors to be applied to the texture coordinates.
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uniform vec2 uTexScale;
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/// The 2D vertex position.
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attribute vec2 aPosition;
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/// The texture coordinate.
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attribute vec2 aTexCoord;
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/// The outgoing texture coordinate.
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varying vec2 vTexCoord;
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void main() {
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gl_Position = uTransform * vec4(aPosition, 0.0, 1.0);
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vTexCoord = aTexCoord * uTexScale;
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}
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