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#version 420 core
#include "clip.vert.glsl"
layout(location = 0) in vec4 inRect;
layout(location = 1) in vec4 inTexRect;
layout(location = 2) in mat4 inColorMatrix;
layout(location = 6) in vec4 inColorOffset;
layout(location = 0) out vec2 outPos;
layout(location = 1) out vec2 outTexCoord;
layout(location = 2) out flat mat4 outColorMatrix;
layout(location = 6) out flat vec4 outColorOffset;
vec2 offsets[6] = { vec2(0.0, 0.0),
vec2(1.0, 0.0),
vec2(0.0, 1.0),
vec2(0.0, 1.0),
vec2(1.0, 0.0),
vec2(1.0, 1.0) };
void main() {
vec4 rect = clip (inRect);
vec2 pos = rect.xy + rect.zw * offsets[gl_VertexIndex];
gl_Position = push.mvp * vec4 (pos, 0.0, 1.0);
outPos = pos;
vec4 texrect = vec4((rect.xy - inRect.xy) / inRect.zw,
rect.zw / inRect.zw);
texrect = vec4(inTexRect.xy + inTexRect.zw * texrect.xy,
inTexRect.zw * texrect.zw);
outTexCoord = texrect.xy + texrect.zw * offsets[gl_VertexIndex];
outColorMatrix = inColorMatrix;
outColorOffset = inColorOffset;
}
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