@header #include "cglm/cglm.h"

@vs vs_text
in vec2 in_position;
in vec2 in_uv;

layout(binding = 0) uniform text_params {
    mat4 mvp;
    vec4 color;
};

out vec2 out_uv;
out vec4 out_color;

void main() {
    gl_Position = mvp * vec4(in_position, 0.0, 1.0);
    out_uv = in_uv;
    out_color = color;
}

@end

@fs fs_text
layout(binding = 0) uniform texture2D u_texture;
layout(binding = 1) uniform sampler u_sampler;

in vec2 out_uv;
in vec4 out_color;

out vec4 frag_color;

void main() {
    float alpha = texture(sampler2D(u_texture, u_sampler), out_uv).r;
    frag_color = vec4(out_color.rgb, out_color.a * alpha);
}

@end
@program text vs_text fs_text