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panfrost: Add tentative bifrost_texture_descriptor 

It looks very similar to the Midgard texture descriptor, just with a
bunch of fields moved around and the whole descriptor flattened (so
basically just memory access optimizations, from what I can tell).

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4680>
This commit is contained in:
Alyssa Rosenzweig 2020-03-09 09:45:52 -04:00 committed by Tomeu Vizoso
parent 81a31911dd
commit 0167391a1a
1 changed files with 32 additions and 0 deletions
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32
src/panfrost/include/panfrost-job.h
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@ -1238,6 +1238,38 @@ struct mali_texture_descriptor {
uint32_t unknown7;
} __attribute__((packed));
/* While Midgard texture descriptors are variable length, Bifrost descriptors
* are fixed like samplers with more pointers to expand if necessary */
struct bifrost_texture_descriptor {
unsigned format_unk : 4; /* 2 */
enum mali_texture_type type : 2;
unsigned format_unk2 : 16; /* 0 */
enum mali_format format : 8;
unsigned srgb : 1;
unsigned format_unk3 : 1; /* 0 */
uint16_t width; /* MALI_POSITIVE */
uint16_t height; /* MALI_POSITIVE */
/* OpenGL swizzle */
unsigned swizzle : 12;
unsigned unk0 : 4; /* 1 */
uint8_t levels : 8; /* Number of levels-1 if mipmapped, 0 if not */
unsigned unk1 : 4;
unsigned levels_unk : 24; /* 0 */
unsigned level_2 : 8; /* Number of levels, again? */
mali_ptr payload;
uint16_t array_size;
uint16_t unk4;
uint16_t depth;
uint16_t unk5;
} __attribute__((packed));
/* filter_mode */
#define MALI_SAMP_MAG_NEAREST (1 << 0)