Module: Mesa
Branch: master
Commit: 92141afd0eda8ac4c3940fdb5682d39a5726e36a
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=92141afd0eda8ac4c3940fdb5682d39a5726e36a

Author: Rob Clark <[email protected]>
Date:   Thu Mar 27 14:47:48 2014 -0400

freedreno: handle null sampler

This is something that XA triggers.  In some cases it will only use
SAMP[1] (composite mask) but not SAMP[0] (composite src).

Signed-off-by: Rob Clark <[email protected]>

---

 src/gallium/drivers/freedreno/a2xx/fd2_emit.c |    5 ++++-
 src/gallium/drivers/freedreno/a3xx/fd3_emit.c |    6 ++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/freedreno/a2xx/fd2_emit.c 
b/src/gallium/drivers/freedreno/a2xx/fd2_emit.c
index 35511ba..d1a586c 100644
--- a/src/gallium/drivers/freedreno/a2xx/fd2_emit.c
+++ b/src/gallium/drivers/freedreno/a2xx/fd2_emit.c
@@ -124,13 +124,16 @@ emit_texture(struct fd_ringbuffer *ring, struct 
fd_context *ctx,
                struct fd_texture_stateobj *tex, unsigned samp_id, texmask 
emitted)
 {
        unsigned const_idx = fd2_get_const_idx(ctx, tex, samp_id);
+       static const struct fd2_sampler_stateobj dummy_sampler = {};
        struct fd2_sampler_stateobj *sampler;
        struct fd2_pipe_sampler_view *view;
 
        if (emitted & (1 << const_idx))
                return 0;
 
-       sampler = fd2_sampler_stateobj(tex->samplers[samp_id]);
+       sampler = tex->samplers[samp_id] ?
+                       fd2_sampler_stateobj(tex->samplers[samp_id]) :
+                       &dummy_sampler;
        view = fd2_pipe_sampler_view(tex->textures[samp_id]);
 
        OUT_PKT3(ring, CP_SET_CONSTANT, 7);
diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_emit.c 
b/src/gallium/drivers/freedreno/a3xx/fd3_emit.c
index 619ac1e..365cb37 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_emit.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_emit.c
@@ -176,8 +176,10 @@ emit_textures(struct fd_ringbuffer *ring,
                OUT_RING(ring, CP_LOAD_STATE_1_STATE_TYPE(ST_SHADER) |
                                CP_LOAD_STATE_1_EXT_SRC_ADDR(0));
                for (i = 0; i < tex->num_samplers; i++) {
-                       struct fd3_sampler_stateobj *sampler =
-                                       fd3_sampler_stateobj(tex->samplers[i]);
+                       static const struct fd3_sampler_stateobj dummy_sampler 
= {};
+                       struct fd3_sampler_stateobj *sampler = tex->samplers[i] 
?
+                                       fd3_sampler_stateobj(tex->samplers[i]) :
+                                       &dummy_sampler;
                        OUT_RING(ring, sampler->texsamp0);
                        OUT_RING(ring, sampler->texsamp1);
                }

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