From: Jason Ekstrand <jason.ekstrand@intel.com>
Date: Tue, 30 May 2017 16:42:25 +0000 (-0700)
Subject: intel/isl: Add a helper for getting the byte/tile offset of a subimage
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d065a9540cb4c4f064f695194e35c8c1c3d2b419;p=mesa.git

intel/isl: Add a helper for getting the byte/tile offset of a subimage

Frequently, get_image_offset_sa is combined with get_intratile_offset_sa
so it makes sense to have a single helper to do both.  If the caller
doesn't want the intratile offsets, it can simply pass NULL and ISL will
assert that they are 0.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
---

diff --git a/src/intel/blorp/blorp_blit.c b/src/intel/blorp/blorp_blit.c
index 2f7761bff74..d93cde2fcf4 100644
--- a/src/intel/blorp/blorp_blit.c
+++ b/src/intel/blorp/blorp_blit.c
@@ -1401,16 +1401,11 @@ blorp_surf_convert_to_single_slice(const struct isl_device *isl_dev,
    else
       layer = info->view.base_array_layer;
 
-   uint32_t x_offset_sa, y_offset_sa;
-   isl_surf_get_image_offset_sa(&info->surf, info->view.base_level,
-                                layer, z, &x_offset_sa, &y_offset_sa);
-
    uint32_t byte_offset;
-   isl_tiling_get_intratile_offset_sa(info->surf.tiling,
-                                      info->surf.format, info->surf.row_pitch,
-                                      x_offset_sa, y_offset_sa,
-                                      &byte_offset,
-                                      &info->tile_x_sa, &info->tile_y_sa);
+   isl_surf_get_image_offset_B_tile_sa(&info->surf,
+                                       info->view.base_level, layer, z,
+                                       &byte_offset,
+                                       &info->tile_x_sa, &info->tile_y_sa);
    info->addr.offset += byte_offset;
 
    const uint32_t slice_width_px =
diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index fb4e170bfc0..60a594394b9 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -2145,6 +2145,45 @@ isl_surf_get_image_offset_el(const struct isl_surf *surf,
    *y_offset_el = y_offset_sa / fmtl->bh;
 }
 
+void
+isl_surf_get_image_offset_B_tile_sa(const struct isl_surf *surf,
+                                    uint32_t level,
+                                    uint32_t logical_array_layer,
+                                    uint32_t logical_z_offset_px,
+                                    uint32_t *offset_B,
+                                    uint32_t *x_offset_sa,
+                                    uint32_t *y_offset_sa)
+{
+   const struct isl_format_layout *fmtl = isl_format_get_layout(surf->format);
+
+   uint32_t total_x_offset_el, total_y_offset_el;
+   isl_surf_get_image_offset_el(surf, level, logical_array_layer,
+                                logical_z_offset_px,
+                                &total_x_offset_el,
+                                &total_y_offset_el);
+
+   uint32_t x_offset_el, y_offset_el;
+   isl_tiling_get_intratile_offset_el(surf->tiling, fmtl->bpb,
+                                      surf->row_pitch,
+                                      total_x_offset_el,
+                                      total_y_offset_el,
+                                      offset_B,
+                                      &x_offset_el,
+                                      &y_offset_el);
+
+   if (x_offset_sa) {
+      *x_offset_sa = x_offset_el * fmtl->bw;
+   } else {
+      assert(x_offset_el == 0);
+   }
+
+   if (y_offset_sa) {
+      *y_offset_sa = y_offset_el * fmtl->bh;
+   } else {
+      assert(y_offset_el == 0);
+   }
+}
+
 void
 isl_tiling_get_intratile_offset_el(enum isl_tiling tiling,
                                    uint32_t bpb,
diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index 8b2d264f8b2..658f67e4ae3 100644
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -1589,6 +1589,27 @@ isl_surf_get_image_offset_el(const struct isl_surf *surf,
                              uint32_t *x_offset_el,
                              uint32_t *y_offset_el);
 
+/**
+ * Calculate the offset, in bytes and intratile surface samples, to a
+ * subimage in the surface.
+ *
+ * This is equivalent to calling isl_surf_get_image_offset_el, passing the
+ * result to isl_tiling_get_intratile_offset_el, and converting the tile
+ * offsets to samples.
+ *
+ * @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_B_tile_sa(const struct isl_surf *surf,
+                                    uint32_t level,
+                                    uint32_t logical_array_layer,
+                                    uint32_t logical_z_offset_px,
+                                    uint32_t *offset_B,
+                                    uint32_t *x_offset_sa,
+                                    uint32_t *y_offset_sa);
+
 /**
  * @brief Calculate the intratile offsets to a surface.
  *