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isl: Add functions for computing surface offsets in samples

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Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Jason Ekstrand
2016-06-24 15:00:31 -07:00
parent f6c75df083
commit ba88a9622d
2 changed files with 60 additions and 12 deletions
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24
src/intel/isl/isl.c
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@@ -1475,13 +1475,13 @@ get_image_offset_sa_gen9_1d(const struct isl_surf *surf,
* @invariant logical_array_layer < logical array length of surface
* @invariant logical_z_offset_px < logical depth of surface at level
*/
static void
get_image_offset_sa(const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t logical_z_offset_px,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
void
isl_surf_get_image_offset_sa(const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t logical_z_offset_px,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
assert(level < surf->levels);
assert(logical_array_layer < surf->logical_level0_px.array_len);
@@ -1524,11 +1524,11 @@ isl_surf_get_image_offset_el(const struct isl_surf *surf,
< isl_minify(surf->logical_level0_px.depth, level));
uint32_t x_offset_sa, y_offset_sa;
get_image_offset_sa(surf, level,
logical_array_layer,
logical_z_offset_px,
&x_offset_sa,
&y_offset_sa);
isl_surf_get_image_offset_sa(surf, level,
logical_array_layer,
logical_z_offset_px,
&x_offset_sa,
&y_offset_sa);
*x_offset_el = x_offset_sa / fmtl->bw;
*y_offset_el = y_offset_sa / fmtl->bh;