fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-25 14:48:12 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

isl: add new helper for format component compatibility

Browse source 
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17329>
(cherry picked from commit ab4beaf3fb)
This commit is contained in:
Lionel Landwerlin 2022-07-01 10:43:21 +03:00 • committed by Dylan Baker
parent 9276b2f2f3
commit 56b7c79ccf
3 changed files with 26 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
.pick_status.json
View file

@ -409,7 +409,7 @@
"description": "isl: add new helper for format component compatibility",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null
},

3
src/intel/isl/isl.h
View file

@ -1863,6 +1863,9 @@ bool isl_formats_are_ccs_e_compatible(const struct intel_device_info *devinfo,
uint8_t isl_format_get_aux_map_encoding(enum isl_format format);
uint8_t isl_get_render_compression_format(enum isl_format format);
bool isl_formats_have_same_bits_per_channel(enum isl_format format1,
enum isl_format format2);
bool isl_format_has_unorm_channel(enum isl_format fmt) ATTRIBUTE_CONST;
bool isl_format_has_snorm_channel(enum isl_format fmt) ATTRIBUTE_CONST;
bool isl_format_has_ufloat_channel(enum isl_format fmt) ATTRIBUTE_CONST;

29
src/intel/isl/isl_format.c
View file

@ -934,6 +934,27 @@ isl_format_supports_multisampling(const struct intel_device_info *devinfo,
}
}
/**
* Returns true if the two formats are component size compatible meaning that
* each component from one format has the same number of bits as the other
* format.
*
* This is useful to check whether an image used with 2 different formats can
* be fast cleared with a non 0 clear color.
*/
bool
isl_formats_have_same_bits_per_channel(enum isl_format format1,
enum isl_format format2)
{
const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
fmtl1->channels.a.bits == fmtl2->channels.a.bits;
}
/**
* Returns true if the two formats are "CCS_E compatible" meaning that you can
* render in one format with CCS_E enabled and then texture using the other
@ -962,16 +983,10 @@ isl_formats_are_ccs_e_compatible(const struct intel_device_info *devinfo,
if (format2 == ISL_FORMAT_A8_UNORM)
format2 = ISL_FORMAT_R8_UNORM;
const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
/* The compression used by CCS is not dependent on the actual data encoding
* of the format but only depends on the bit-layout of the channels.
*/
return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
fmtl1->channels.a.bits == fmtl2->channels.a.bits;
return isl_formats_have_same_bits_per_channel(format1, format2);
}
static bool