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panfrost: Add pan_afbc_compression_mode on Valhall 

Map a canonical format (a hardware-independent pipe_format) to a compression
mode (Valhall-specific hardware enum defined in GenXML). To be used for packing
plane descriptors and render target descriptors when AFBC is in use on Valhall.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16800>
This commit is contained in:
Alyssa Rosenzweig 2022-05-17 14:25:58 -04:00 committed by Marge Bot
parent 87dcdbdad6
commit c2207d27c2
2 changed files with 32 additions and 0 deletions
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26
src/panfrost/lib/pan_cs.c
View File

@ -397,6 +397,32 @@ pan_rt_init_format(const struct pan_image_view *rt,
cfg->swizzle = panfrost_translate_swizzle_4(swizzle);
}
#if PAN_ARCH >= 9
enum mali_afbc_compression_mode
pan_afbc_compression_mode(enum pipe_format format)
{
/* There's a special case for texturing the stencil part from a combined
* depth/stencil texture, handle it separately.
*/
if (format == PIPE_FORMAT_X24S8_UINT)
return MALI_AFBC_COMPRESSION_MODE_X24S8;
/* Otherwise, map canonical formats to the hardware enum. This only
* needs to handle the subset of formats returned by
* panfrost_afbc_format.
*/
switch (panfrost_afbc_format(PAN_ARCH, format)) {
case PIPE_FORMAT_R8G8_UNORM: return MALI_AFBC_COMPRESSION_MODE_R8G8;
case PIPE_FORMAT_R8G8B8_UNORM: return MALI_AFBC_COMPRESSION_MODE_R8G8B8;
case PIPE_FORMAT_R8G8B8A8_UNORM: return MALI_AFBC_COMPRESSION_MODE_R8G8B8A8;
case PIPE_FORMAT_R5G6B5_UNORM: return MALI_AFBC_COMPRESSION_MODE_R5G6B5;
case PIPE_FORMAT_S8_UINT: return MALI_AFBC_COMPRESSION_MODE_S8;
case PIPE_FORMAT_NONE: unreachable("invalid format for AFBC");
default: unreachable("unknown canonical AFBC format");
}
}
#endif
static void
pan_prepare_rt(const struct pan_fb_info *fb, unsigned idx,
unsigned cbuf_offset,

6
src/panfrost/lib/pan_texture.h
View File

@ -263,6 +263,12 @@ pan_iview_get_surface(const struct pan_image_view *iview,
unsigned level, unsigned layer, unsigned sample,
struct pan_surface *surf);
#if PAN_ARCH >= 9
enum mali_afbc_compression_mode
pan_afbc_compression_mode(enum pipe_format format);
#endif
#ifdef __cplusplus
} /* extern C */
#endif