+ srcLevel,
+ &src_box);
+ }
+}
+
+
+struct pipe_resource *
+st_create_color_map_texture(struct gl_context *ctx)
+{
+ struct st_context *st = st_context(ctx);
+ struct pipe_resource *pt;
+ enum pipe_format format;
+ const uint texSize = 256; /* simple, and usually perfect */
+
+ /* find an RGBA texture format */
+ format = st_choose_format(st, GL_RGBA, GL_NONE, GL_NONE,
+ PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
+ FALSE);
+
+ /* create texture for color map/table */
+ pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
+ texSize, texSize, 1, 1, 0, PIPE_BIND_SAMPLER_VIEW);
+ return pt;
+}
+
+/**
+ * Try to find a matching sampler view for the given context.
+ * If none is found an empty slot is initialized with a
+ * template and returned instead.
+ */
+struct pipe_sampler_view **
+st_texture_get_sampler_view(struct st_context *st,
+ struct st_texture_object *stObj)
+{
+ struct pipe_sampler_view *used = NULL, **free = NULL;
+ GLuint i;
+
+ for (i = 0; i < stObj->num_sampler_views; ++i) {
+ struct pipe_sampler_view **sv = &stObj->sampler_views[i];
+ /* Is the array entry used ? */
+ if (*sv) {
+ /* Yes, check if it's the right one */
+ if ((*sv)->context == st->pipe)
+ return sv;
+
+ /* Wasn't the right one, but remember it as template */
+ used = *sv;
+ } else {
+ /* Found a free slot, remember that */
+ free = sv;
+ }
+ }
+
+ /* Couldn't find a slot for our context, create a new one */
+
+ if (!free) {
+ /* Haven't even found a free one, resize the array */
+ GLuint old_size = stObj->num_sampler_views * sizeof(void *);
+ GLuint new_size = old_size + sizeof(void *);
+ stObj->sampler_views = REALLOC(stObj->sampler_views, old_size, new_size);
+ free = &stObj->sampler_views[stObj->num_sampler_views++];
+ *free = NULL;
+ }
+
+ /* Add just any sampler view to be used as a template */
+ if (used)
+ pipe_sampler_view_reference(free, used);
+
+ return free;
+}
+
+void
+st_texture_release_sampler_view(struct st_context *st,
+ struct st_texture_object *stObj)
+{
+ GLuint i;
+
+ for (i = 0; i < stObj->num_sampler_views; ++i) {
+ struct pipe_sampler_view **sv = &stObj->sampler_views[i];
+
+ if (*sv && (*sv)->context == st->pipe) {
+ pipe_sampler_view_reference(sv, NULL);
+ break;
+ }