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r600g: use better sample positions for 8x MSAA

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Taken from the intel driver. The sample positions are actually a solution
to the 8 queens puzzle.  It gives more accurate and smoother AA.
This commit is contained in:
Marek Olšák
2012-10-27 16:31:19 +02:00
parent e73bf3b805
commit c0c26ddaef
2 changed files with 12 additions and 12 deletions
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18
src/gallium/drivers/r600/evergreen_state.c
View File

@@ -1723,16 +1723,16 @@ static void evergreen_emit_msaa_state(struct r600_context *rctx, int nr_samples)
static unsigned max_dist_4x = 6;
/* 8xMSAA */
static uint32_t sample_locs_8x[] = {
FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
};
static unsigned max_dist_8x = 8;
static unsigned max_dist_8x = 7;
struct radeon_winsys_cs *cs = rctx->cs;
unsigned max_dist = 0;

6
src/gallium/drivers/r600/r600_state.c
View File

@@ -1587,10 +1587,10 @@ static void r600_emit_msaa_state(struct r600_context *rctx, int nr_samples)
};
static unsigned max_dist_4x = 6;
static uint32_t sample_locs_8x[] = {
FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
};
static unsigned max_dist_8x = 8;
static unsigned max_dist_8x = 7;
struct radeon_winsys_cs *cs = rctx->cs;
unsigned max_dist = 0;