[Bug 110897] HyperZ is broken for r300 (bad z for some micro and macrotiles?)
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri Jun 14 13:20:58 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=110897
--- Comment #29 from Richard Thier <u9vata at gmail.com> ---
Okay this is weird for me:
/* src/gallium/drivers/r300/r300_texture_desc.c */
399 /* Get the HIZ buffer size in dwords. */
400 hiz_numdw = (stride * height) / (8*8 * pipes);
401
402 /* Check whether we have enough HIZ memory. */
403 if (hiz_numdw <= screen->caps.hiz_ram * pipes) {
404 tex->tex.hiz_dwords[i] = hiz_numdw;
405 tex->tex.hiz_stride_in_pixels[i] = stride;
406 } else {
407 tex->tex.hiz_dwords[i] = 0;
408 tex->tex.hiz_stride_in_pixels[i] = 0;
409 }
(gdb) p hiz_numdw
$35 = 1128
(gdb) p screen->caps.hiz_ram
$36 = 0
(gdb)
(!) Is it normal to have zero hiz_ram on this
card???????????????????????????????????????????????
Btw:
info.r300_num_z_pipes == 1
info.r300_num_gb_pipes == 3 (this is in the pipes var)
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