////////////////////////////////
//~ Rect types

Struct(UI_RectSig)
{
    /* ----------------------------------------------------- */
    Mat4x4 projection;                          /* 16 consts */
    /* ----------------------------------------------------- */
    StructuredBufferRid instances;              /* 01 consts */
    u32 _pad0;                                  /* 01 consts (padding) */
    u32 _pad1;                                  /* 01 consts (padding) */
    u32 _pad2;                                  /* 01 consts (padding) */
    /* ----------------------------------------------------- */
};
AssertRootConst(UI_RectSig, 20);

Struct(UI_RectInstance)
{
    Vec2 p0;
    Vec2 p1;
    u32 tint_srgb;
};
#define UI_DefaultRectInstance (UI_RectInstance) {  \
    0                                               \
}