GTK4_GG_hack/shader.vert

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#version 330 core
uniform mat4 projection_matrix;
uniform mat4 model_matrix;
uniform mat4 view_matrix;
layout(location=0) in vec3 in_position;
layout(location=1) in vec3 in_color;
out vec4 color;
void main(void)
{
float zoom = 1.1f, chrominance = 1, luminance = 1;
gl_Position =
projection_matrix * view_matrix * model_matrix * vec4(in_position, zoom);
color = vec4 (chrominance * in_color.rgb, luminance);
}
// https://learnopengl.com/Getting-started/Shaders