r300: don't apply odd macroblock rounding to 3D textures

This is intended only for NPOT 2D textures.

Fixes: 0763fb947 ("r300: align macro-tiled stride-addressed textures in X")
(cherry picked from commit 648dfe88f4)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40752>

.pick_status.json

@@ -684,7 +684,7 @@
         "description": "r300: don't apply odd macroblock rounding to 3D textures",
         "nominated": true,
         "nomination_type": 2,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "0763fb947a338c50eef69f5af6d9a20204ef4b1b",
         "notes": null

src/gallium/drivers/r300/r300_texture_desc.c

@@ -140,7 +140,9 @@ static unsigned r300_texture_get_stride(struct r300_screen *screen,
 
         /* NPOT textures use stride addressing (TX_PITCH_EN). Keep macro-tiled
          * strides at an even number of macro tiles in X to prevent flakes. */
-        if (tex->tex.macrotile[level] && tex->tex.uses_stride_addressing) {
+        if (tex->b.target != PIPE_TEXTURE_3D &&
+            tex->tex.macrotile[level] &&
+            tex->tex.uses_stride_addressing) {
             width = align(width, tile_width * 2);
         }