nv30: reset the stencil mask when fast-clearing
Apparently the stencil mask applies to clears on nv30/nv40. Reset it to
0xff before doing a stencil clear. This fixes gl-1.0-readpixsanity and
a number of other piglit tests.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_clear.c b/src/gallium/drivers/nouveau/nv30/nv30_clear.c
index 118cac7..c8fa38e 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_clear.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_clear.c
@@ -73,8 +73,13 @@
zeta = pack_zeta(fb->zsbuf->format, depth, stencil);
if (buffers & PIPE_CLEAR_DEPTH)
mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
- if (buffers & PIPE_CLEAR_STENCIL)
+ if (buffers & PIPE_CLEAR_STENCIL) {
mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
+ BEGIN_NV04(push, NV30_3D(STENCIL_ENABLE(0)), 2);
+ PUSH_DATA (push, 0);
+ PUSH_DATA (push, 0x000000ff);
+ nv30->dirty |= NV30_NEW_ZSA;
+ }
}
/*XXX: wtf? fixes clears sometimes not clearing on nv3x... */