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 <[email protected]>

1 files changed, 3 insertions, 4 deletions

diff --git a/src/gallium/auxiliary/draw/draw_context.h b/src/gallium/auxiliary/draw/draw_context.h
index e8e2d9487b3..18c8595f8cf 100644
--- a/src/gallium/auxiliary/draw/draw_context.h
+++ b/src/gallium/auxiliary/draw/draw_context.h
@@ -132,10 +132,9 @@ draw_num_shader_outputs(const struct draw_context *draw);
 
 
 void
-draw_texture_samplers(struct draw_context *draw,
-                      uint shader_type,
-                      uint num_samplers,
-                      struct tgsi_sampler **samplers);
+draw_texture_sampler(struct draw_context *draw,
+                     uint shader_type,
+                     struct tgsi_sampler *sampler);
 
 void
 draw_set_sampler_views(struct draw_context *draw,