From: Rob Clark Date: Mon, 1 Dec 2014 16:55:36 +0000 (-0500) Subject: freedreno/a4xx: invalidate cache when vbo's change X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bb19f2c3c4a47c25c2680ad2d94a10f8ee5e70d7;p=mesa.git freedreno/a4xx: invalidate cache when vbo's change Otherwise vertex shader can see stale cache data. This in particular happens when the same vbo is updated and reused. Not sure yet if vbo's at differing addresses but bound to same vertex buffer slot could have issues, but seems safest to flush whenever new vertex buffers are bound. Signed-off-by: Rob Clark --- diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_emit.c b/src/gallium/drivers/freedreno/a4xx/fd4_emit.c index 3f51e502d0a..44a824ab164 100644 --- a/src/gallium/drivers/freedreno/a4xx/fd4_emit.c +++ b/src/gallium/drivers/freedreno/a4xx/fd4_emit.c @@ -328,6 +328,13 @@ fd4_emit_vertex_bufs(struct fd_ringbuffer *ring, struct fd4_emit *emit) OUT_RING(ring, 0x00000000); /* XXX VFD_CONTROL_2 */ OUT_RING(ring, 0x0000fc00); /* XXX VFD_CONTROL_3 */ OUT_RING(ring, 0x00000000); /* XXX VFD_CONTROL_4 */ + + /* cache invalidate, otherwise vertex fetch could see + * stale vbo contents: + */ + OUT_PKT0(ring, REG_A4XX_UCHE_INVALIDATE0, 2); + OUT_RING(ring, 0x00000000); + OUT_RING(ring, 0x00000012); } void