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, 5 insertions, 8 deletions

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index 045bb6b2ae8..6b70ac88be6 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -581,18 +581,15 @@ draw_num_shader_outputs(const struct draw_context *draw)
  * This might only be used by software drivers for the time being.
  */
 void
-draw_texture_samplers(struct draw_context *draw,
-                      uint shader,
-                      uint num_samplers,
-                      struct tgsi_sampler **samplers)
+draw_texture_sampler(struct draw_context *draw,
+                     uint shader,
+                     struct tgsi_sampler *sampler)
 {
    if (shader == PIPE_SHADER_VERTEX) {
-      draw->vs.tgsi.num_samplers = num_samplers;
-      draw->vs.tgsi.samplers = samplers;
+      draw->vs.tgsi.sampler = sampler;
    } else {
       debug_assert(shader == PIPE_SHADER_GEOMETRY);
-      draw->gs.tgsi.num_samplers = num_samplers;
-      draw->gs.tgsi.samplers = samplers;
+      draw->gs.tgsi.sampler = sampler;
    }
 }