42 lines
895 B
GLSL
42 lines
895 B
GLSL
/* SPDX-FileCopyrightText: 2018-2022 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/**
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* Simple shader that just draw one icon at the specified location
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* does not need any vertex input (producing less call to immBegin/End)
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*/
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void main()
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{
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vec2 uv;
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vec2 co;
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if (gl_VertexID == 0) {
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co = rect_geom.xw;
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uv = rect_icon.xw;
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mask_coord_interp = vec2(0, 1);
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}
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else if (gl_VertexID == 1) {
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co = rect_geom.xy;
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uv = rect_icon.xy;
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mask_coord_interp = vec2(0, 0);
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}
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else if (gl_VertexID == 2) {
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co = rect_geom.zw;
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uv = rect_icon.zw;
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mask_coord_interp = vec2(1, 1);
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}
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else {
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co = rect_geom.zy;
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uv = rect_icon.zy;
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mask_coord_interp = vec2(1, 0);
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}
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/* Put origin in lower right corner. */
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mask_coord_interp.x -= 1;
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gl_Position = ModelViewProjectionMatrix * vec4(co, 0.0f, 1.0f);
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texCoord_interp = uv;
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}
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