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r600: Allow eight bit, three channel formats for vertex buffers

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While using three component texture formats results in CTs failures,
three component vertex attributes are fine, and not allowing them
results in significant performance regressisons.

Fixes: e41958e344
   r600: Disable eight bit three channel formats

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6399

v2: rename function to is_buffer_format_supported (Emma)

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16267>
This commit is contained in:
Gert Wollny 2022-05-01 22:49:01 +02:00 • committed by Marge Bot
parent 0be9cac742
commit 4a2ff9eb86
3 changed files with 7 additions and 7 deletions
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4
src/gallium/drivers/r600/evergreen_state.c
View file

@ -273,7 +273,7 @@ bool evergreen_is_format_supported(struct pipe_screen *screen,
if (usage & PIPE_BIND_SAMPLER_VIEW) {
if (target == PIPE_BUFFER) {
if (r600_is_vertex_format_supported(format))
if (r600_is_buffer_format_supported(format, false))
retval |= PIPE_BIND_SAMPLER_VIEW;
} else {
if (r600_is_sampler_format_supported(screen, format))
@ -303,7 +303,7 @@ bool evergreen_is_format_supported(struct pipe_screen *screen,
}
if ((usage & PIPE_BIND_VERTEX_BUFFER) &&
r600_is_vertex_format_supported(format)) {
r600_is_buffer_format_supported(format, true)) {
retval |= PIPE_BIND_VERTEX_BUFFER;
}

6
src/gallium/drivers/r600/r600_formats.h
View file

@ -82,7 +82,7 @@ static inline unsigned r600_endian_swap(unsigned size)
}
}
static inline bool r600_is_vertex_format_supported(enum pipe_format format)
static inline bool r600_is_buffer_format_supported(enum pipe_format format, bool for_vbo)
{
const struct util_format_description *desc = util_format_description(format);
unsigned i;
@ -115,9 +115,9 @@ static inline bool r600_is_vertex_format_supported(enum pipe_format format)
desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED))
return false;
/* No 8 bit 3 channel formats */
/* No 8 bit 3 channel formats for TBOs */
if (desc->channel[i].size == 8 && desc->nr_channels == 3)
return false;
return for_vbo;
return true;
}

4
src/gallium/drivers/r600/r600_state.c
View file

@ -202,7 +202,7 @@ bool r600_is_format_supported(struct pipe_screen *screen,
if (usage & PIPE_BIND_SAMPLER_VIEW) {
if (target == PIPE_BUFFER) {
if (r600_is_vertex_format_supported(format))
if (r600_is_buffer_format_supported(format, false))
retval |= PIPE_BIND_SAMPLER_VIEW;
} else {
if (r600_is_sampler_format_supported(screen, format))
@ -232,7 +232,7 @@ bool r600_is_format_supported(struct pipe_screen *screen,
}
if ((usage & PIPE_BIND_VERTEX_BUFFER) &&
r600_is_vertex_format_supported(format)) {
r600_is_buffer_format_supported(format, true)) {
retval |= PIPE_BIND_VERTEX_BUFFER;
}