[PATCH 3/5] d3d9: Retrieve vertex shader constants from the primary stateblock.

[Zebediah Figura]

On 2/10/20 8:37 AM, Henri Verbeet wrote:
> On Sat, 8 Feb 2020 at 07:42, Zebediah Figura <z.figura12 at gmail.com> wrote:
>> +    if (reg_idx >= device->vs_uniform_count || reg_idx + count > device->vs_uniform_count)
>>       {
> "reg_idx + count" can overflow. In principle that's an existing issue,
> but previously wined3d_device_get_vs_consts_f() would have caught it.

Ah, right. I should have wondered why it was written that way to begin 
with...

> 
>> -    hr = wined3d_device_get_vs_consts_i(device->wined3d_device,
>> -            reg_idx, count, (struct wined3d_ivec4 *)data);
>> +    memcpy(data, &wined3d_stateblock_get_state(device->state)->vs_consts_i[reg_idx], count * sizeof(struct wined3d_ivec4));
> It's just a tought, but the following may be slightly more natural:
> 
>      const struct wined3d_ivec4 *src =
> wined3d_stateblock_get_state(device->state)->vs_consts_i;
>      memcpy(data, &src[reg_idx], count * sizeof(*src));
> 

Yeah, probably.