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panfrost: Don't use DECODE_FIXED16 for sample position

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Strictly this is a signed fixed-point, anyway.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20445>
This commit is contained in:
Alyssa Rosenzweig 2022-12-28 15:53:41 -05:00 • committed by Marge Bot
parent e0752673be
commit 17c55e0d12
1 changed files with 8 additions and 2 deletions
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10
src/panfrost/lib/pan_samples.c
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@ -60,6 +60,12 @@ struct mali_sample_positions {
#define SAMPLE8(x, y) SAMPLE16((x)*2, (y)*2)
#define SAMPLE4(x, y) SAMPLE16((x)*4, (y)*4)
static float
decode_position(int16_t raw)
{
return ((float)raw) / 256.0;
}
/* clang-format off */
const struct mali_sample_positions sample_position_lut[] = {
[MALI_SAMPLE_PATTERN_SINGLE_SAMPLED] = {
@ -155,6 +161,6 @@ panfrost_query_sample_position(enum mali_sample_pattern pattern,
struct mali_sample_position pos =
sample_position_lut[pattern].positions[sample_idx];
out[0] = DECODE_FIXED_16(pos.x);
out[1] = DECODE_FIXED_16(pos.y);
out[0] = decode_position(pos.x);
out[1] = decode_position(pos.y);
}