Mesa (master): r600g: hack around a problem with texture alignment
Marek Olšák
mareko at kemper.freedesktop.org
Fri Aug 19 21:12:34 UTC 2011
Module: Mesa
Branch: master
Commit: 751a6ed893d393eaea266d892402d132f7d15a7d
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=751a6ed893d393eaea266d892402d132f7d15a7d
Author: Marek Olšák <maraeo at gmail.com>
Date: Fri Aug 19 21:48:12 2011 +0200
r600g: hack around a problem with texture alignment
---
src/gallium/drivers/r600/r600_texture.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c
index 74219e8..5681dd8 100644
--- a/src/gallium/drivers/r600/r600_texture.c
+++ b/src/gallium/drivers/r600/r600_texture.c
@@ -198,6 +198,16 @@ static unsigned r600_texture_get_nblocksy(struct pipe_screen *screen,
height = util_format_get_nblocksy(rtex->real_format, height);
tile_height = r600_get_height_alignment(screen,
rtex->array_mode[level]);
+
+ /* XXX Hack around an alignment issue. Less tests fail with this.
+ *
+ * The thing is depth-stencil buffers should be tiled, i.e.
+ * the alignment should be >=8. If I make them tiled, stencil starts
+ * working because it no longer overlaps with the depth buffer
+ * in memory, but texturing like drawpix-stencil breaks. */
+ if (util_format_is_depth_or_stencil(rtex->real_format) && tile_height < 8)
+ tile_height = 8;
+
height = align(height, tile_height);
return height;
}
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