45 lines
1.1 KiB
GLSL
45 lines
1.1 KiB
GLSL
/*
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* SPDX-FileCopyrightText: 2020 Arjen Hiemstra <ahiemstra@heimr.nl>
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*
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* SPDX-License-Identifier: LGPL-2.0-or-later
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*/
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// See sdf.glsl for the SDF related functions.
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// This shader renders a texture on top of a rectangle with rounded corners and
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// a shadow below it.
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uniform lowp float opacity;
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uniform lowp float size;
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uniform lowp vec4 radius;
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uniform lowp vec4 color;
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uniform lowp vec4 shadowColor;
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uniform lowp vec2 offset;
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uniform lowp vec2 aspect;
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uniform sampler2D textureSource;
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#ifdef CORE_PROFILE
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in lowp vec2 uv;
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out lowp vec4 out_color;
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#else
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varying lowp vec2 uv;
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#define out_color gl_FragColor
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#define texture texture2D
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#endif
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void main()
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{
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lowp vec4 col = vec4(0.0);
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// Calculate the main rectangle distance field.
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lowp float rect = sdf_rounded_rectangle(uv, aspect, radius);
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// Sample the texture, then render it, without any alpha blending.
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lowp vec2 texture_uv = ((uv / aspect) + 1.0) / 2.0;
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lowp vec4 texture_color = vec4(texture(textureSource, texture_uv).rgb, 1.0);
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col = sdf_render(rect, col, texture_color);
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out_color = col * opacity;
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}
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