Mesa (master): i965/miptree: Clarify face/level/layer in slice copy

[Topi Pohjolainen]

Module: Mesa
Branch: master
Commit: 920c8e89c59e19b44f69b0acf5778d079a25e2a2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=920c8e89c59e19b44f69b0acf5778d079a25e2a2

Author: Topi Pohjolainen <topi.pohjolainen at intel.com>
Date:   Thu Jun  8 12:31:18 2017 +0300

i965/miptree: Clarify face/level/layer in slice copy

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>

---

 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 39 ++++++++++++++-------------
 1 file changed, 20 insertions(+), 19 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 02e74caa81..64f98ec67a 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -1312,22 +1312,14 @@ static void
 intel_miptree_copy_slice(struct brw_context *brw,
 			 struct intel_mipmap_tree *dst_mt,
 			 struct intel_mipmap_tree *src_mt,
-			 int level,
-			 int face,
-			 int depth)
+			 unsigned level, unsigned slice)
 
 {
    mesa_format format = src_mt->format;
    uint32_t width = minify(src_mt->physical_width0, level - src_mt->first_level);
    uint32_t height = minify(src_mt->physical_height0, level - src_mt->first_level);
-   int slice;
 
-   if (face > 0)
-      slice = face;
-   else
-      slice = depth;
-
-   assert(depth < src_mt->level[level].depth);
+   assert(slice < src_mt->level[level].depth);
    assert(src_mt->format == dst_mt->format);
 
    if (dst_mt->compressed) {
@@ -1390,17 +1382,26 @@ intel_miptree_copy_teximage(struct brw_context *brw,
    struct intel_texture_object *intel_obj =
       intel_texture_object(intelImage->base.Base.TexObject);
    int level = intelImage->base.Base.Level;
-   int face = intelImage->base.Base.Face;
-
-   GLuint depth;
-   if (intel_obj->base.Target == GL_TEXTURE_1D_ARRAY)
-      depth = intelImage->base.Base.Height;
-   else
-      depth = intelImage->base.Base.Depth;
+   const unsigned face = intelImage->base.Base.Face;
+   unsigned start_layer, end_layer;
+
+   if (intel_obj->base.Target == GL_TEXTURE_1D_ARRAY) {
+      assert(face == 0);
+      assert(intelImage->base.Base.Height);
+      start_layer = 0;
+      end_layer = intelImage->base.Base.Height - 1;
+   } else if (face > 0) {
+      start_layer = face;
+      end_layer = face;
+   } else {
+      assert(intelImage->base.Base.Depth);
+      start_layer = 0;
+      end_layer = intelImage->base.Base.Depth - 1;
+   }
 
    if (!invalidate) {
-      for (int slice = 0; slice < depth; slice++) {
-         intel_miptree_copy_slice(brw, dst_mt, src_mt, level, face, slice);
+      for (unsigned i = start_layer; i <= end_layer; i++) {
+         intel_miptree_copy_slice(brw, dst_mt, src_mt, level, i);
       }
    }