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solar-conflux/odin/sdl-opengl-rendering/src/vert.glsl

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GLSL

#version 330
layout (location = 0) in vec2 aPos;
layout (location = 1) in vec4 instanceFill;
layout (location = 2) in mat3 instanceMatrix;
out vec4 vertexColor;
void main() {
vec3 pos = instanceMatrix * vec3(aPos.xy, 1);
gl_Position = vec4(pos.xyz, 1);
vertexColor = instanceFill;
}