[PATCH 5/6] d3dx9: Avoid redundant constant tables updates.

[Matteo Bruni]

2017-05-12 14:24 GMT+02:00 Paul Gofman <gofmanp at gmail.com>:

> +static void set_preshader_modified(struct d3dx_preshader *pres)
> +{
> +    unsigned int i;
> +
> +    for (i = 0; i < pres->ins_count; ++i)
> +    {
> +        const struct d3dx_pres_ins *ins = &pres->ins[i];
> +        const struct d3dx_pres_reg *reg = &ins->output.reg;
> +
> +        regstore_set_modified(&pres->regs, reg->table, reg->offset,
> +                pres_op_info[ins->op].func_all_comps ? 1 : ins->component_count);
> +    }
> +}

This looks a bit ugly but I imagine it's actually okay in practice.
Not that I can think of anything better either. E.g. I'm not sure that
storing an array of register ranges to dirtify (i.e. precomputing this
preshader scan) is really an improvement.