import Mesa 11.0.6

1 files changed, 224 insertions, 0 deletions

diff --git a/lib/mesa/src/gallium/drivers/svga/svga_sampler_view.c b/lib/mesa/src/gallium/drivers/svga/svga_sampler_view.c
new file mode 100644
index 000000000..55dc49f2d
--- /dev/null
+++ b/lib/mesa/src/gallium/drivers/svga/svga_sampler_view.c
@@ -0,0 +1,224 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+#include "svga_cmd.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "os/os_thread.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_string.h"
+
+#include "svga_format.h"
+#include "svga_screen.h"
+#include "svga_context.h"
+#include "svga_resource_texture.h"
+#include "svga_sampler_view.h"
+#include "svga_debug.h"
+#include "svga_surface.h"
+
+
+void
+svga_debug_describe_sampler_view(char *buf, const struct svga_sampler_view *sv)
+{
+   char res[128];
+   debug_describe_resource(res, sv->texture);
+   util_sprintf(buf, "svga_sampler_view<%s,[%u,%u]>", res, sv->min_lod, sv->max_lod);
+}
+
+struct svga_sampler_view *
+svga_get_tex_sampler_view(struct pipe_context *pipe,
+			  struct pipe_resource *pt,
+                          unsigned min_lod, unsigned max_lod)
+{
+   struct svga_context *svga = svga_context(pipe);
+   struct svga_screen *ss = svga_screen(pipe->screen);
+   struct svga_texture *tex = svga_texture(pt); 
+   struct svga_sampler_view *sv = NULL;
+   SVGA3dSurfaceFlags flags = SVGA3D_SURFACE_HINT_TEXTURE;
+   SVGA3dSurfaceFormat format = svga_translate_format(ss, pt->format, PIPE_BIND_SAMPLER_VIEW);
+   boolean view = TRUE;
+
+   assert(pt);
+   assert(min_lod <= max_lod);
+   assert(max_lod <= pt->last_level);
+
+
+   /* Is a view needed */
+   {
+      /*
+       * Can't control max lod. For first level views and when we only
+       * look at one level we disable mip filtering to achive the same
+       * results as a view.
+       */
+      if (min_lod == 0 && max_lod >= pt->last_level)
+         view = FALSE;
+
+      if (ss->debug.no_sampler_view)
+         view = FALSE;
+
+      if (ss->debug.force_sampler_view)
+         view = TRUE;
+   }
+
+   /* First try the cache */
+   if (view) {
+      pipe_mutex_lock(ss->tex_mutex);
+      if (tex->cached_view &&
+          tex->cached_view->min_lod == min_lod &&
+          tex->cached_view->max_lod == max_lod) {
+         svga_sampler_view_reference(&sv, tex->cached_view);
+         pipe_mutex_unlock(ss->tex_mutex);
+         SVGA_DBG(DEBUG_VIEWS, "svga: Sampler view: reuse %p, %u %u, last %u\n",
+                              pt, min_lod, max_lod, pt->last_level);
+         svga_validate_sampler_view(svga_context(pipe), sv);
+         return sv;
+      }
+      pipe_mutex_unlock(ss->tex_mutex);
+   }
+
+   sv = CALLOC_STRUCT(svga_sampler_view);
+   if (!sv)
+      return NULL;
+
+   pipe_reference_init(&sv->reference, 1);
+
+   /* Note: we're not refcounting the texture resource here to avoid
+    * a circular dependency.
+    */
+   sv->texture = pt;
+
+   sv->min_lod = min_lod;
+   sv->max_lod = max_lod;
+
+   /* No view needed just use the whole texture */
+   if (!view) {
+      SVGA_DBG(DEBUG_VIEWS,
+               "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
+               pt, min_lod, max_lod,
+               max_lod - min_lod + 1,
+               pt->width0,
+               pt->height0,
+               pt->depth0,
+               pt->last_level);
+      sv->key.cachable = 0;
+      sv->handle = tex->handle;
+      debug_reference(&sv->reference,
+                      (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
+      return sv;
+   }
+
+   SVGA_DBG(DEBUG_VIEWS,
+            "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
+            pt, min_lod, max_lod,
+            max_lod - min_lod + 1,
+            pt->width0,
+            pt->height0,
+            pt->depth0,
+            pt->last_level);
+
+   sv->age = tex->age;
+   sv->handle = svga_texture_view_surface(svga, tex, flags, format,
+                                          min_lod,
+                                          max_lod - min_lod + 1,
+                                          -1, -1,
+                                          &sv->key);
+
+   if (!sv->handle) {
+      sv->key.cachable = 0;
+      sv->handle = tex->handle;
+      debug_reference(&sv->reference,
+                      (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
+      return sv;
+   }
+
+   pipe_mutex_lock(ss->tex_mutex);
+   svga_sampler_view_reference(&tex->cached_view, sv);
+   pipe_mutex_unlock(ss->tex_mutex);
+
+   debug_reference(&sv->reference,
+                   (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
+
+   return sv;
+}
+
+void
+svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v)
+{
+   struct svga_texture *tex = svga_texture(v->texture);
+   unsigned numFaces;
+   unsigned age = 0;
+   int i;
+   unsigned k;
+
+   assert(svga);
+
+   if (v->handle == tex->handle)
+      return;
+
+   age = tex->age;
+
+   if(tex->b.b.target == PIPE_TEXTURE_CUBE)
+      numFaces = 6;
+   else
+      numFaces = 1;
+
+   for (i = v->min_lod; i <= v->max_lod; i++) {
+      for (k = 0; k < numFaces; k++) {
+         assert(i < Elements(tex->view_age));
+         if (v->age < tex->view_age[i])
+            svga_texture_copy_handle(svga,
+                                     tex->handle, 0, 0, 0, i, k,
+                                     v->handle, 0, 0, 0, i - v->min_lod, k,
+                                     u_minify(tex->b.b.width0, i),
+                                     u_minify(tex->b.b.height0, i),
+                                     u_minify(tex->b.b.depth0, i));
+      }
+   }
+
+   v->age = age;
+}
+
+void
+svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
+{
+   struct svga_texture *tex = svga_texture(v->texture);
+
+   if(v->handle != tex->handle) {
+      struct svga_screen *ss = svga_screen(v->texture->screen);
+      SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
+      svga_screen_surface_destroy(ss, &v->key, &v->handle);
+   }
+
+   /* Note: we're not refcounting the texture resource here to avoid
+    * a circular dependency.
+    */
+   v->texture = NULL;
+
+   FREE(v);
+}