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panfrost: Add internal afbc_formats 

We need to know the internal (physical) formats used for AFBC of a given
logical format, in order to check format compatibility and determine if
we need to decompress AFBC for conformance.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13205>
This commit is contained in:
Alyssa Rosenzweig 2021-10-16 19:45:27 -04:00
parent 342ed4909f
commit 93c9123c31
2 changed files with 53 additions and 16 deletions
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66
src/panfrost/lib/pan_afbc.c
View File

@ -70,23 +70,16 @@
#define AFBC_TILE_HEIGHT 16
#define AFBC_CACHE_ALIGN 64
/* Is it possible to AFBC compress a particular format? Common formats (and
* YUV) are compressible. Some obscure formats are not and fallback on linear,
* at a performance hit. Also, if you need to disable AFBC entirely in the
* driver for debug/profiling, just always return false here. */
/* AFBC supports compressing a few canonical formats. Additional formats are
* available by using a canonical internal format. Given a PIPE format, find
* the canonical AFBC internal format if it exists, or NONE if the format
* cannot be compressed. */
bool
panfrost_format_supports_afbc(const struct panfrost_device *dev, enum pipe_format format)
enum pipe_format
panfrost_afbc_format(const struct panfrost_device *dev, enum pipe_format format)
{
/* Don't allow swizzled formats on v7 */
switch (format) {
case PIPE_FORMAT_R8G8B8A8_UNORM:
case PIPE_FORMAT_R8G8B8X8_UNORM:
case PIPE_FORMAT_R8G8B8_UNORM:
case PIPE_FORMAT_R5G6B5_UNORM:
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
case PIPE_FORMAT_Z24X8_UNORM:
case PIPE_FORMAT_Z16_UNORM:
return true;
case PIPE_FORMAT_B8G8R8A8_UNORM:
case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_A8R8G8B8_UNORM:
@ -95,10 +88,51 @@ panfrost_format_supports_afbc(const struct panfrost_device *dev, enum pipe_forma
case PIPE_FORMAT_A8B8G8R8_UNORM:
case PIPE_FORMAT_B8G8R8_UNORM:
case PIPE_FORMAT_B5G6R5_UNORM:
return (dev->arch < 7);
if (dev->arch >= 7)
return PIPE_FORMAT_NONE;
break;
default:
return false;
break;
}
switch (format) {
case PIPE_FORMAT_Z16_UNORM:
return PIPE_FORMAT_R8G8_UNORM;
case PIPE_FORMAT_R8G8B8_UNORM:
case PIPE_FORMAT_B8G8R8_UNORM:
return PIPE_FORMAT_R8G8B8_UNORM;
case PIPE_FORMAT_R8G8B8A8_UNORM:
case PIPE_FORMAT_R8G8B8X8_UNORM:
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
case PIPE_FORMAT_Z24X8_UNORM:
case PIPE_FORMAT_X24S8_UINT:
case PIPE_FORMAT_B8G8R8A8_UNORM:
case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_A8R8G8B8_UNORM:
case PIPE_FORMAT_X8R8G8B8_UNORM:
case PIPE_FORMAT_X8B8G8R8_UNORM:
case PIPE_FORMAT_A8B8G8R8_UNORM:
return PIPE_FORMAT_R8G8B8A8_UNORM;
case PIPE_FORMAT_R5G6B5_UNORM:
case PIPE_FORMAT_B5G6R5_UNORM:
return PIPE_FORMAT_R5G6B5_UNORM;
/* TODO: More AFBC formats */
default:
return PIPE_FORMAT_NONE;
}
}
/* A format may be compressed as AFBC if it has an AFBC internal format */
bool
panfrost_format_supports_afbc(const struct panfrost_device *dev, enum pipe_format format)
{
return panfrost_afbc_format(dev, format) != PIPE_FORMAT_NONE;
}
unsigned

3
src/panfrost/lib/pan_texture.h
View File

@ -148,6 +148,9 @@ bool
panfrost_format_supports_afbc(const struct panfrost_device *dev,
enum pipe_format format);
enum pipe_format
panfrost_afbc_format(const struct panfrost_device *dev, enum pipe_format format);
#define AFBC_HEADER_BYTES_PER_TILE 16
unsigned