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41 lines
1.3 KiB
GLSL
41 lines
1.3 KiB
GLSL
#version 420 core
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#include "clip.vert.glsl"
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layout(location = 0) in vec4 inRect;
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layout(location = 1) in vec4 inStartTexRect;
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layout(location = 2) in vec4 inEndTexRect;
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layout(location = 3) in uint inBlendMode;
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layout(location = 0) out vec2 outPos;
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layout(location = 1) out vec2 outStartTexCoord;
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layout(location = 2) out vec2 outEndTexCoord;
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layout(location = 3) flat out uint outBlendMode;
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vec2 offsets[6] = { vec2(0.0, 0.0),
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vec2(1.0, 0.0),
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vec2(0.0, 1.0),
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vec2(0.0, 1.0),
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vec2(1.0, 0.0),
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vec2(1.0, 1.0) };
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void main() {
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vec4 rect = clip (inRect);
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vec2 pos = rect.xy + rect.zw * offsets[gl_VertexIndex];
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gl_Position = push.mvp * vec4 (pos, 0.0, 1.0);
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outPos = pos;
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vec4 texrect = vec4((rect.xy - inRect.xy) / inRect.zw,
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rect.zw / inRect.zw);
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vec4 starttexrect = vec4(inStartTexRect.xy + inStartTexRect.zw * texrect.xy,
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inStartTexRect.zw * texrect.zw);
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vec4 endtexrect = vec4(inEndTexRect.xy + inEndTexRect.zw * texrect.xy,
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inEndTexRect.zw * texrect.zw);
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outStartTexCoord = starttexrect.xy + starttexrect.zw * offsets[gl_VertexIndex];
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outEndTexCoord = endtexrect.xy + endtexrect.zw * offsets[gl_VertexIndex];
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outBlendMode = inBlendMode;
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}
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