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isl: Add functions for computing surface offsets in samples 

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
View File

@ -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;

48
src/intel/isl/isl.h
View File

@ -1324,6 +1324,22 @@ isl_surf_get_array_pitch(const struct isl_surf *surf)
return isl_surf_get_array_pitch_sa_rows(surf) * surf->row_pitch;
}
/**
* Calculate the offset, in units of surface samples, to a subimage in the
* surface.
*
* @invariant level < surface levels
* @invariant logical_array_layer < logical array length of surface
* @invariant logical_z_offset_px < logical depth of surface at level
*/
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);
/**
* Calculate the offset, in units of surface elements, to a subimage in the
* surface.
@ -1361,6 +1377,38 @@ isl_tiling_get_intratile_offset_el(const struct isl_device *dev,
uint32_t *x_offset_el,
uint32_t *y_offset_el);
static inline void
isl_tiling_get_intratile_offset_sa(const struct isl_device *dev,
enum isl_tiling tiling,
enum isl_format format,
uint32_t row_pitch,
uint32_t total_x_offset_sa,
uint32_t total_y_offset_sa,
uint32_t *base_address_offset,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
assert(fmtl->bpb % 8 == 0);
/* For computing the intratile offsets, we actually want a strange unit
* which is samples for multisampled surfaces but elements for compressed
* surfaces.
*/
assert(total_x_offset_sa % fmtl->bw == 0);
assert(total_y_offset_sa % fmtl->bw == 0);
const uint32_t total_x_offset = total_x_offset_sa / fmtl->bw;
const uint32_t total_y_offset = total_y_offset_sa / fmtl->bh;
isl_tiling_get_intratile_offset_el(dev, tiling, fmtl->bpb / 8, row_pitch,
total_x_offset, total_y_offset,
base_address_offset,
x_offset_sa, y_offset_sa);
*x_offset_sa *= fmtl->bw;
*y_offset_sa *= fmtl->bh;
}
/**
* @brief Get value of 3DSTATE_DEPTH_BUFFER.SurfaceFormat
*