1 files changed, 252 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_texture.c b/src/gallium/drivers/cell/ppu/cell_texture.c
new file mode 100644
index 0000000000..c8ef36002f
--- /dev/null
+++ b/src/gallium/drivers/cell/ppu/cell_texture.c
@@ -0,0 +1,252 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Michel Dänzer <michel@tungstengraphics.com>
+  */
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_util.h"
+#include "pipe/p_winsys.h"
+
+#include "cell_context.h"
+#include "cell_state.h"
+#include "cell_texture.h"
+
+
+/* Simple, maximally packed layout.
+ */
+
+static unsigned minify( unsigned d )
+{
+   return MAX2(1, d>>1);
+}
+
+
+static void
+cell_texture_layout(struct cell_texture * spt)
+{
+   struct pipe_texture *pt = &spt->base;
+   unsigned level;
+   unsigned width = pt->width[0];
+   unsigned height = pt->height[0];
+   unsigned depth = pt->depth[0];
+
+   spt->buffer_size = 0;
+
+   for ( level = 0 ; level <= pt->last_level ; level++ ) {
+      pt->width[level] = width;
+      pt->height[level] = height;
+      pt->depth[level] = depth;
+
+      spt->level_offset[level] = spt->buffer_size;
+
+      spt->buffer_size += ((pt->compressed) ? MAX2(1, height/4) : height) *
+			  ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
+			  width * pt->cpp;
+
+      width  = minify(width);
+      height = minify(height);
+      depth = minify(depth);
+   }
+}
+
+
+struct pipe_texture *
+cell_texture_create(struct pipe_context *pipe, const struct pipe_texture *templat)
+{
+   struct cell_texture *spt = CALLOC_STRUCT(cell_texture);
+   if (!spt)
+      return NULL;
+
+   spt->base = *templat;
+
+   cell_texture_layout(spt);
+
+   spt->buffer = pipe->winsys->buffer_create(pipe->winsys, 32,
+                                             PIPE_BUFFER_USAGE_PIXEL,
+                                             spt->buffer_size);
+
+   if (!spt->buffer) {
+      FREE(spt);
+      return NULL;
+   }
+
+   return &spt->base;
+}
+
+
+void
+cell_texture_release(struct pipe_context *pipe, struct pipe_texture **pt)
+{
+   if (!*pt)
+      return;
+
+   /*
+   DBG("%s %p refcount will be %d\n",
+       __FUNCTION__, (void *) *pt, (*pt)->refcount - 1);
+   */
+   if (--(*pt)->refcount <= 0) {
+      struct cell_texture *spt = cell_texture(*pt);
+
+      /*
+      DBG("%s deleting %p\n", __FUNCTION__, (void *) spt);
+      */
+
+      pipe_buffer_reference(pipe->winsys, &spt->buffer, NULL);
+
+      FREE(spt);
+   }
+   *pt = NULL;
+}
+
+
+/**
+ * Called via pipe->get_tex_surface()
+ */
+struct pipe_surface *
+cell_get_tex_surface(struct pipe_context *pipe,
+                         struct pipe_texture *pt,
+                         unsigned face, unsigned level, unsigned zslice)
+{
+   struct cell_texture *spt = cell_texture(pt);
+   struct pipe_surface *ps;
+
+   ps = pipe->winsys->surface_alloc(pipe->winsys);
+   if (ps) {
+      assert(ps->refcount);
+      assert(ps->winsys);
+      pipe_buffer_reference(pipe->winsys, &ps->buffer, spt->buffer);
+      ps->format = pt->format;
+      ps->cpp = pt->cpp;
+      ps->width = pt->width[level];
+      ps->height = pt->height[level];
+      ps->pitch = ps->width;
+      ps->offset = spt->level_offset[level];
+
+      if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
+	 ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
+		       (pt->compressed ? ps->height/4 : ps->height) *
+		       ps->width * ps->cpp;
+      } else {
+	 assert(face == 0);
+	 assert(zslice == 0);
+      }
+   }
+   return ps;
+}
+
+
+
+static void
+tile_copy_data(uint w, uint h, uint tile_size, uint *dst, const uint *src)
+{
+   const uint tile_size2 = tile_size * tile_size;
+   const uint h_t = h / tile_size, w_t = w / tile_size;
+
+   uint it, jt;  /* tile counters */
+   uint i, j;    /* intra-tile counters */
+
+   for (it = 0; it < h_t; it++) {
+      for (jt = 0; jt < w_t; jt++) {
+         /* fill in tile (i, j) */
+         uint *tdst = dst + (it * w_t + jt) * tile_size2;
+         for (i = 0; i < tile_size; i++) {
+            for (j = 0; j < tile_size; j++) {
+               const uint srci = it * tile_size + i;
+               const uint srcj = jt * tile_size + j;
+               *tdst++ = src[srci * h + srcj];
+            }
+         }
+      }
+   }
+}
+
+
+
+/**
+ * Convert linear texture image data to tiled format for SPU usage.
+ */
+static void
+cell_tile_texture(struct cell_context *cell,
+                  struct cell_texture *texture)
+{
+   uint face = 0, level = 0, zslice = 0;
+   struct pipe_surface *surf;
+   const uint w = texture->base.width[0], h = texture->base.height[0];
+   const uint *src;
+
+   /* temporary restrictions: */
+   assert(w >= TILE_SIZE);
+   assert(h >= TILE_SIZE);
+   assert(w % TILE_SIZE == 0);
+   assert(h % TILE_SIZE == 0);
+
+   surf = cell_get_tex_surface(&cell->pipe, &texture->base, face, level, zslice);
+   ASSERT(surf);
+
+   src = (const uint *) pipe_surface_map(surf);
+
+   if (texture->tiled_data) {
+      align_free(texture->tiled_data);
+   }
+   texture->tiled_data = align_malloc(w * h * 4, 16);
+
+   tile_copy_data(w, h, TILE_SIZE, texture->tiled_data, src);
+
+   pipe_surface_unmap(surf);
+
+   pipe_surface_reference(&surf, NULL);
+}
+
+
+
+void
+cell_update_texture_mapping(struct cell_context *cell)
+{
+   uint face = 0, level = 0, zslice = 0;
+
+   if (cell->texture[0])
+      cell_tile_texture(cell, cell->texture[0]);
+#if 0
+   if (cell->tex_surf && cell->tex_map) {
+      pipe_surface_unmap(cell->tex_surf);
+      cell->tex_map = NULL;
+   }
+
+   /* XXX free old surface */
+
+   cell->tex_surf = cell_get_tex_surface(&cell->pipe,
+                                         &cell->texture[0]->base,
+                                         face, level, zslice);
+
+   cell->tex_map = pipe_surface_map(cell->tex_surf);
+#endif
+}