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, 18 insertions, 11 deletions

diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c
index e2cc1e17dae..141b7a8b185 100644
--- a/src/gallium/drivers/softpipe/sp_context.c
+++ b/src/gallium/drivers/softpipe/sp_context.c
@@ -51,6 +51,7 @@
 #include "sp_texture.h"
 #include "sp_query.h"
 #include "sp_screen.h"
+#include "sp_tex_sample.h"
 
 
 static void
@@ -115,6 +116,10 @@ softpipe_destroy( struct pipe_context *pipe )
 
    tgsi_exec_machine_destroy(softpipe->fs_machine);
 
+   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
+      FREE(softpipe->tgsi.sampler[i]);
+   }
+
    FREE( softpipe );
 }
 
@@ -190,6 +195,10 @@ softpipe_create_context( struct pipe_screen *screen,
 
    util_init_math();
 
+   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
+      softpipe->tgsi.sampler[i] = sp_create_tgsi_sampler();
+   }
+
    softpipe->dump_fs = debug_get_bool_option( "SOFTPIPE_DUMP_FS", FALSE );
    softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
 
@@ -256,17 +265,15 @@ softpipe_create_context( struct pipe_screen *screen,
    if (!softpipe->draw) 
       goto fail;
 
-   draw_texture_samplers(softpipe->draw,
-                         PIPE_SHADER_VERTEX,
-                         PIPE_MAX_SAMPLERS,
-                         (struct tgsi_sampler **)
-                            softpipe->tgsi.samplers_list[PIPE_SHADER_VERTEX]);
-
-   draw_texture_samplers(softpipe->draw,
-                         PIPE_SHADER_GEOMETRY,
-                         PIPE_MAX_SAMPLERS,
-                         (struct tgsi_sampler **)
-                            softpipe->tgsi.samplers_list[PIPE_SHADER_GEOMETRY]);
+   draw_texture_sampler(softpipe->draw,
+                        PIPE_SHADER_VERTEX,
+                        (struct tgsi_sampler *)
+                           softpipe->tgsi.sampler[PIPE_SHADER_VERTEX]);
+
+   draw_texture_sampler(softpipe->draw,
+                        PIPE_SHADER_GEOMETRY,
+                        (struct tgsi_sampler *)
+                           softpipe->tgsi.sampler[PIPE_SHADER_GEOMETRY]);
 
    if (debug_get_bool_option( "SOFTPIPE_NO_RAST", FALSE ))
       softpipe->no_rast = TRUE;