softpipe/draw/tgsi: simplify driver/tgsi sampler interface

Use a single sampler adapter instead of per-sampler-unit samplers,
and just pass along texture unit and sampler unit in the calls.
The reason is that for dx10-style sample opcodes pre-wired
samplers including all the texture state aren't really feasible (and for
sample_i/sviewinfo we don't even have samplers).
Of course right now softpipe doesn't actually do anything more than
just look up all its pre-wired per-texunit/per-samplerunit sampler as
it did before so this doesn't really achieve much except one more
function call, however this is now all softpipe's fault (fixing that in
a way which doesn't suck is still an unsolved problem).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h
index ec5791c..5063c3c 100644
--- a/src/gallium/auxiliary/draw/draw_private.h
+++ b/src/gallium/auxiliary/draw/draw_private.h
@@ -248,8 +248,7 @@ struct draw_context
       struct {
          struct tgsi_exec_machine *machine;
 
-         struct tgsi_sampler **samplers;
-         uint num_samplers;
+         struct tgsi_sampler *sampler;
       } tgsi;
 
       struct translate *fetch;
@@ -268,8 +267,7 @@ struct draw_context
       struct {
          struct tgsi_exec_machine *machine;
 
-         struct tgsi_sampler **samplers;
-         uint num_samplers;
+         struct tgsi_sampler *sampler;
       } tgsi;
 
    } gs;