llvmpipe: fix clearing integer color buffers

We get int/uint clear color value in this case, and util_pack_color can't
handle these formats at all (even if it could, float input color isn't what
we want).
Pass through the color union appropriately and handle the packing ourselves
(as I couldn't think of a good generic util solution).
This gets piglit fbo_integer_precision_clear and
fbo_integer_readpixels_sint_uint from the ext_texture_integer test group from
segfault to pass (which only leaves fbo-blending from that group not working).

v2: fix up comments

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_clear.c b/src/gallium/drivers/llvmpipe/lp_clear.c
index cc90dc42c65..b00910a4711 100644
--- a/src/gallium/drivers/llvmpipe/lp_clear.c
+++ b/src/gallium/drivers/llvmpipe/lp_clear.c
@@ -59,5 +59,5 @@ llvmpipe_clear(struct pipe_context *pipe,
    if (LP_PERF & PERF_NO_DEPTH)
       buffers &= ~PIPE_CLEAR_DEPTHSTENCIL;
 
-   lp_setup_clear( llvmpipe->setup, color->f, depth, stencil, buffers );
+   lp_setup_clear( llvmpipe->setup, color, depth, stencil, buffers );
 }