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radeonsi: improve quality of 16 sample locations 

This results in better 16x and 8x quality when using these locations.
Verified with the piglit MSAA accuracy test.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2018-05-01 23:17:07 -04:00
parent 01fd543c82
commit 4b6df225f7
1 changed files with 2 additions and 2 deletions
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4
src/gallium/drivers/radeonsi/si_state_msaa.c
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@ -107,12 +107,12 @@ static const uint64_t centroid_priority_8x = 0x3542017635420176ull;
*/
static const uint32_t sample_locs_4x_16x[] = {
FILL_SREG(-5,-2, 5, 3, -2, 6, 3,-5),
FILL_SREG(-7,-8, 1, 1, -6, 4, 7,-4),
FILL_SREG(-6,-7, 1, 1, -6, 4, 7,-3),
FILL_SREG(-1,-3, 6, 7, -3, 2, 0,-7),
FILL_SREG(-4,-6, 2, 5, -8, 0, 4,-1),
};
static const uint64_t centroid_priority_4x = 0x2310231023102310ull;
static const uint64_t centroid_priority_16x = 0x497ec6b231d0fa85ull;
static const uint64_t centroid_priority_16x = 0x49e7c6b231d0fa85ull;
static void si_get_sample_position(struct pipe_context *ctx, unsigned sample_count,
unsigned sample_index, float *out_value)