radeonsi: switch back to standard DX sample positions
Apps may rely on them.
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@ -87,26 +87,31 @@ static const uint32_t sample_locs_1x =
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FILL_SREG( 0, 0, 0, 0, 0, 0, 0, 0); /* S1, S2, S3 fields are not used by 1x */
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static const uint64_t centroid_priority_1x = 0x0000000000000000ull;
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/* 2x MSAA */
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/* 2x MSAA (the positions are sorted for EQAA) */
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static const uint32_t sample_locs_2x =
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FILL_SREG(-4,-4, 4, 4, 0, 0, 0, 0); /* S2 & S3 fields are not used by 2x MSAA */
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static const uint64_t centroid_priority_2x = 0x1010101010101010ull;
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/* 4x, 8x, and 16x MSAA
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* - The first 4 locations happen to be optimal for 4x MSAA, better than
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* the standard DX 4x locations.
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* - The first 8 locations happen to be almost as good as 8x DX locations,
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* but the DX locations are horrible for worst-case EQAA 8s4f and 8s2f.
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*/
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static const uint32_t sample_locs_4x_8x_16x[] = {
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FILL_SREG(-5,-2, 5, 3, -2, 6, 3,-5),
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FILL_SREG(-6,-7, 1, 1, -6, 4, 7,-3),
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FILL_SREG(-1,-3, 6, 7, -3, 2, 0,-7),
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FILL_SREG(-4,-6, 2, 5, -8, 0, 4,-1),
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/* 4x MSAA (the positions are sorted for EQAA) */
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static const uint32_t sample_locs_4x =
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FILL_SREG(-2,-6, 2, 6, -6, 2, 6,-2);
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static const uint64_t centroid_priority_4x = 0x3210321032103210ull;
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/* 8x MSAA (the positions are sorted for EQAA) */
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static const uint32_t sample_locs_8x[] = {
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FILL_SREG(-3,-5, 5, 1, -1, 3, 7,-7),
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FILL_SREG(-7,-1, 3, 7, -5, 5, 1,-3),
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};
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static const uint64_t centroid_priority_4x = 0x2310231023102310ull;
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static const uint64_t centroid_priority_8x = 0x4762310547623105ull;
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static const uint64_t centroid_priority_16x = 0x49e7c6b231d0fa85ull;
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static const uint64_t centroid_priority_8x = 0x3546012735460127ull;
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/* 16x MSAA (the positions are sorted for EQAA) */
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static const uint32_t sample_locs_16x[] = {
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FILL_SREG(-5,-2, 5, 3, -2, 6, 3,-5),
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FILL_SREG(-4,-6, 1, 1, -6, 4, 7,-4),
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FILL_SREG(-1,-3, 6, 7, -3, 2, 0,-7),
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FILL_SREG(-7,-8, 2, 5, -8, 0, 4,-1),
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};
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static const uint64_t centroid_priority_16x = 0xc97e64b231d0fa85ull;
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static void si_get_sample_position(struct pipe_context *ctx, unsigned sample_count,
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unsigned sample_index, float *out_value)
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@ -122,9 +127,13 @@ static void si_get_sample_position(struct pipe_context *ctx, unsigned sample_cou
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sample_locs = &sample_locs_2x;
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break;
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case 4:
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sample_locs = &sample_locs_4x;
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break;
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case 8:
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sample_locs = sample_locs_8x;
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break;
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case 16:
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sample_locs = sample_locs_4x_8x_16x;
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sample_locs = sample_locs_16x;
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break;
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}
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@ -172,13 +181,13 @@ void si_emit_sample_locations(struct radeon_cmdbuf *cs, int nr_samples)
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si_emit_max_4_sample_locs(cs, centroid_priority_2x, sample_locs_2x);
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break;
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case 4:
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si_emit_max_4_sample_locs(cs, centroid_priority_4x, sample_locs_4x_8x_16x[0]);
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si_emit_max_4_sample_locs(cs, centroid_priority_4x, sample_locs_4x);
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break;
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case 8:
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si_emit_max_16_sample_locs(cs, centroid_priority_8x, sample_locs_4x_8x_16x, 8);
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si_emit_max_16_sample_locs(cs, centroid_priority_8x, sample_locs_8x, 8);
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break;
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case 16:
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si_emit_max_16_sample_locs(cs, centroid_priority_16x, sample_locs_4x_8x_16x, 16);
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si_emit_max_16_sample_locs(cs, centroid_priority_16x, sample_locs_16x, 16);
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break;
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}
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}
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