radeonsi: improve rounding of zmin

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12389>

diff --git a/src/gallium/drivers/radeonsi/si_clear.c b/src/gallium/drivers/radeonsi/si_clear.c
index 7f236fe..48283c0 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_clear.c
+++ b/src/gallium/drivers/radeonsi/si_clear.c
@@ -476,7 +476,7 @@ static uint32_t si_get_htile_clear_value(struct si_texture *tex, float depth)
    const uint32_t smem  = 0;
 
    /* Convert depthValue to 14-bit zmin/zmax uint values. */
-   const uint32_t zmin = (depth * max_z_value) + 0.5f;
+   const uint32_t zmin = lroundf(depth * max_z_value);
    const uint32_t zmax = zmin;
 
    if (tex->htile_stencil_disabled) {