softpipe: handle vertex texture sampling when using llvm for draw

Pretty trivial, just fill in the offsets and such. The implementation
is near 100% copy and paste from llvmpipe. Should be useful for debugging.

No piglit change when not using SOFTPIPE_USE_LLVM=1.
Now that it can do the same tests with and without using llvm for vs/gs,
with llvm more pass, the only things failing only with llvm seems to be
edgeflags tests and vs/gs-pow-float-float (and for the latter I'm not
convinced the zero tolerance it requires is somehow mandated by glsl).

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

1 files changed, 15 insertions, 0 deletions

diff --git a/src/gallium/drivers/softpipe/sp_state.h b/src/gallium/drivers/softpipe/sp_state.h
index 775a1f5..c35534c 100644
--- a/src/gallium/drivers/softpipe/sp_state.h
+++ b/src/gallium/drivers/softpipe/sp_state.h
@@ -192,5 +192,20 @@ softpipe_find_fs_variant(struct softpipe_context *softpipe,
                          struct sp_fragment_shader *fs,
                          const struct sp_fragment_shader_variant_key *key);
 
+void
+softpipe_prepare_vertex_sampling(struct softpipe_context *ctx,
+                                 unsigned num,
+                                 struct pipe_sampler_view **views);
+void
+softpipe_cleanup_vertex_sampling(struct softpipe_context *ctx);
+
+
+void
+softpipe_prepare_geometry_sampling(struct softpipe_context *ctx,
+                                   unsigned num,
+                                   struct pipe_sampler_view **views);
+void
+softpipe_cleanup_geometry_sampling(struct softpipe_context *ctx);
+
 
 #endif