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xf86drm: Add support for decoding Nvidia format modifiers

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Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
This commit is contained in:
Marius Vlad 2021-02-01 13:45:58 +02:00 • committed by Daniel Stone
parent a04b674887
commit 99a0522aef
1 changed files with 30 additions and 0 deletions
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30
xf86drm.c
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@ -61,6 +61,7 @@
#include <sys/sysctl.h>
#endif
#include <math.h>
#include <inttypes.h>
#if defined(__FreeBSD__)
#include <sys/param.h>
@ -165,8 +166,12 @@ struct drmFormatVendorModifierInfo {
static char *
drmGetFormatModifierNameFromArm(uint64_t modifier);
static char *
drmGetFormatModifierNameFromNvidia(uint64_t modifier);
static const struct drmVendorInfo modifier_format_vendor_table[] = {
{ DRM_FORMAT_MOD_VENDOR_ARM, drmGetFormatModifierNameFromArm },
{ DRM_FORMAT_MOD_VENDOR_NVIDIA, drmGetFormatModifierNameFromNvidia },
};
#ifndef AFBC_FORMAT_MOD_MODE_VALUE_MASK
@ -250,6 +255,31 @@ drmGetFormatModifierNameFromArm(uint64_t modifier)
return modifier_name;
}
static char *
drmGetFormatModifierNameFromNvidia(uint64_t modifier)
{
uint64_t height, kind, gen, sector, compression;
height = modifier & 0xf;
kind = (modifier >> 12) & 0xff;
gen = (modifier >> 20) & 0x3;
sector = (modifier >> 22) & 0x1;
compression = (modifier >> 23) & 0x7;
/* just in case there could other simpler modifiers, not yet added, avoid
* testing against TEGRA_TILE */
if ((modifier & 0x10) == 0x10) {
char *mod_nvidia;
asprintf(&mod_nvidia, "BLOCK_LINEAR_2D,HEIGHT=%"PRIu64",KIND=%"PRIu64","
"GEN=%"PRIu64",SECTOR=%"PRIu64",COMPRESSION=%"PRIu64"", height,
kind, gen, sector, compression);
return mod_nvidia;
}
return NULL;
}
static unsigned log2_int(unsigned x)
{
unsigned l;