st/mesa: attempt to fix TFP by using sampler views (v1)

Okay I think this is good enough for now, I can't see any other reason
for mesa to want to use a sampler view so lets just leave it at all the A->X conversions for now.

I've been running gnome-shell under r300g with this for day or so and it seems fine.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 21 insertions, 7 deletions

diff --git a/src/mesa/state_tracker/st_atom_texture.c b/src/mesa/state_tracker/st_atom_texture.c
index 65b57f1591..895681cb23 100644
--- a/src/mesa/state_tracker/st_atom_texture.c
+++ b/src/mesa/state_tracker/st_atom_texture.c
@@ -38,6 +38,7 @@
 #include "st_context.h"
 #include "st_atom.h"
 #include "st_texture.h"
+#include "st_format.h"
 #include "st_cb_texture.h"
 #include "pipe/p_context.h"
 #include "util/u_inlines.h"
@@ -56,14 +57,15 @@ static boolean check_sampler_swizzle(struct pipe_sampler_view *sv,
 
 static INLINE struct pipe_sampler_view *
 st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
-					  struct st_texture_object *stObj)
+					  struct st_texture_object *stObj,
+					  enum pipe_format format)
 					  
 {
    struct pipe_sampler_view templ;
 
    u_sampler_view_default_template(&templ,
                                    stObj->pt,
-                                   stObj->pt->format);
+                                   format);
 
    if (stObj->base._Swizzle != SWIZZLE_NOOP) {
       templ.swizzle_r = GET_SWZ(stObj->base._Swizzle, 0);
@@ -78,7 +80,8 @@ st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
 
 static INLINE struct pipe_sampler_view *
 st_get_texture_sampler_view_from_stobj(struct st_texture_object *stObj,
-				       struct pipe_context *pipe)
+				       struct pipe_context *pipe,
+				       enum pipe_format format)
 
 {
    if (!stObj || !stObj->pt) {
@@ -86,7 +89,7 @@ st_get_texture_sampler_view_from_stobj(struct st_texture_object *stObj,
    }
 
    if (!stObj->sampler_view) {
-      stObj->sampler_view = st_create_texture_sampler_view_from_stobj(pipe, stObj);
+      stObj->sampler_view = st_create_texture_sampler_view_from_stobj(pipe, stObj, format);
    }
 
    return stObj->sampler_view;
@@ -107,7 +110,7 @@ update_textures(struct st_context *st)
    /* loop over sampler units (aka tex image units) */
    for (su = 0; su < st->ctx->Const.MaxTextureImageUnits; su++) {
       struct pipe_sampler_view *sampler_view = NULL;
-
+      enum pipe_format st_view_format;
       if (samplersUsed & (1 << su)) {
          struct gl_texture_object *texObj;
          struct st_texture_object *stObj;
@@ -132,14 +135,25 @@ update_textures(struct st_context *st)
             continue;
          }
 
+	 st_view_format = stObj->pt->format;
+	 {
+	    struct st_texture_image *firstImage;
+	    enum pipe_format firstImageFormat;
+	    firstImage = st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
+
+	    firstImageFormat = st_mesa_format_to_pipe_format(firstImage->base.TexFormat);
+	    if (firstImageFormat != stObj->pt->format)
+	       st_view_format = firstImageFormat;
+
+	 }
          st->state.num_textures = su + 1;
 
 	 /* if sampler view has changed dereference it */
 	 if (stObj->sampler_view)
-	    if (check_sampler_swizzle(stObj->sampler_view, stObj->base._Swizzle))
+	    if (check_sampler_swizzle(stObj->sampler_view, stObj->base._Swizzle) || (st_view_format != stObj->sampler_view->format))
 	       pipe_sampler_view_reference(&stObj->sampler_view, NULL);
 
-         sampler_view = st_get_texture_sampler_view_from_stobj(stObj, pipe);
+         sampler_view = st_get_texture_sampler_view_from_stobj(stObj, pipe, st_view_format);
       }
       pipe_sampler_view_reference(&st->state.sampler_views[su], sampler_view);
    }