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radeonsi: improve HiZ precision for less and lequal depth functions

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r600g needs this too.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
This commit is contained in:
Marek Olšák 2013-12-17 03:11:30 +01:00
parent 1a63f278f2
commit 2b404a6504
1 changed files with 7 additions and 1 deletions
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8
src/gallium/drivers/radeonsi/si_state.c
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@ -1815,7 +1815,13 @@ static void si_db(struct r600_context *rctx, struct si_pm4_state *pm4,
/* use htile only for first level */
if (rtex->htile_buffer && !level) {
z_info |= S_028040_TILE_SURFACE_ENABLE(1);
/* Force off means no force, DB_SHADER_CONTROL decides */
/* This is optimal for the clear value of 1.0 and using
* the LESS and LEQUAL test functions. Set this to 0
* for the opposite case. This can only be changed when
* clearing. */
z_info |= S_028040_ZRANGE_PRECISION(1);
uint64_t va = r600_resource_va(&rctx->screen->b.b, &rtex->htile_buffer->b.b);
db_htile_data_base = va >> 8;
db_htile_surface = S_028ABC_FULL_CACHE(1);