@header package main
@header import sg "sokol/gfx"
@header import glm "core:math/linalg/glsl"
@ctype mat4 glm.mat4

@vs vs
in vec2 position;
in vec4 inst_mat0;
in vec4 inst_mat1;
in vec4 inst_mat2;
in vec4 inst_mat3;
in vec3 color;
out vec4 vs_color;

layout(binding=0) uniform vs_params {
    mat4 proj;
};

void main() {
    mat4 model = mat4(inst_mat0, inst_mat1, inst_mat2, inst_mat3);
    gl_Position = model * vec4(position, 0.0, 1.0);
    vs_color = vec4(color, 1.0);
}
@end

@fs fs
in vec4 vs_color;
out vec4 frag_color;

void main() {
    frag_color = vs_color;
}
@end

@program quad vs fs