Code reorganization: move files into their places.

This is in a separate commit to ensure renames are properly preserved.

1 files changed, 536 insertions, 0 deletions

diff --git a/src/gallium/drivers/i915simple/i915_texture.c b/src/gallium/drivers/i915simple/i915_texture.c
new file mode 100644
index 00000000000..6d37ae3d747
--- /dev/null
+++ b/src/gallium/drivers/i915simple/i915_texture.c
@@ -0,0 +1,536 @@
+/**************************************************************************
+ * 
+ * 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 <[email protected]>
+  *   Michel Dänzer <[email protected]>
+  */
+
+#include "pipe/p_state.h"
+#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 "i915_context.h"
+#include "i915_texture.h"
+#include "i915_debug.h"
+
+
+static unsigned minify( unsigned d )
+{
+   return MAX2(1, d>>1);
+}
+
+
+
+static void
+i915_miptree_set_level_info(struct i915_texture *tex,
+                             unsigned level,
+                             unsigned nr_images,
+                             unsigned x, unsigned y, unsigned w, unsigned h, unsigned d)
+{
+   struct pipe_texture *pt = &tex->base;
+
+   assert(level < PIPE_MAX_TEXTURE_LEVELS);
+
+   pt->width[level] = w;
+   pt->height[level] = h;
+   pt->depth[level] = d;
+
+   tex->level_offset[level] = (x + y * tex->pitch) * pt->cpp;
+   tex->nr_images[level] = nr_images;
+
+   /*
+   DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
+       level, w, h, d, x, y, tex->level_offset[level]);
+   */
+
+   /* Not sure when this would happen, but anyway: 
+    */
+   if (tex->image_offset[level]) {
+      FREE(tex->image_offset[level]);
+      tex->image_offset[level] = NULL;
+   }
+
+   assert(nr_images);
+   assert(!tex->image_offset[level]);
+
+   tex->image_offset[level] = (unsigned *) MALLOC(nr_images * sizeof(unsigned));
+   tex->image_offset[level][0] = 0;
+}
+
+
+static void
+i915_miptree_set_image_offset(struct i915_texture *tex,
+			      unsigned level, unsigned img, unsigned x, unsigned y)
+{
+   if (img == 0 && level == 0)
+      assert(x == 0 && y == 0);
+
+   assert(img < tex->nr_images[level]);
+
+   tex->image_offset[level][img] = (x + y * tex->pitch);
+
+   /*
+   DBG("%s level %d img %d pos %d,%d image_offset %x\n",
+       __FUNCTION__, level, img, x, y, tex->image_offset[level][img]);
+   */
+}
+
+
+static void
+i945_miptree_layout_2d( struct i915_texture *tex )
+{
+   struct pipe_texture *pt = &tex->base;
+   int align_h = 2, align_w = 4;
+   unsigned level;
+   unsigned x = 0;
+   unsigned y = 0;
+   unsigned width = pt->width[0];
+   unsigned height = pt->height[0];
+
+   tex->pitch = pt->width[0];
+
+   /* May need to adjust pitch to accomodate the placement of
+    * the 2nd mipmap level.  This occurs when the alignment
+    * constraints of mipmap placement push the right edge of the
+    * 2nd mipmap level out past the width of its parent.
+    */
+   if (pt->last_level > 0) {
+      unsigned mip1_width = align_int(minify(pt->width[0]), align_w)
+			+ minify(minify(pt->width[0]));
+
+      if (mip1_width > pt->width[0])
+	 tex->pitch = mip1_width;
+   }
+
+   /* Pitch must be a whole number of dwords, even though we
+    * express it in texels.
+    */
+   tex->pitch = align_int(tex->pitch * pt->cpp, 4) / pt->cpp;
+   tex->total_height = 0;
+
+   for (level = 0; level <= pt->last_level; level++) {
+      unsigned img_height;
+
+      i915_miptree_set_level_info(tex, level, 1, x, y, width, height, 1);
+
+      if (pt->compressed)
+	 img_height = MAX2(1, height/4);
+      else
+	 img_height = align_int(height, align_h);
+
+
+      /* Because the images are packed better, the final offset
+       * might not be the maximal one:
+       */
+      tex->total_height = MAX2(tex->total_height, y + img_height);
+
+      /* Layout_below: step right after second mipmap level.
+       */
+      if (level == 1) {
+	 x += align_int(width, align_w);
+      }
+      else {
+	 y += img_height;
+      }
+
+      width  = minify(width);
+      height = minify(height);
+   }
+}
+
+
+static const int initial_offsets[6][2] = {
+   {0, 0},
+   {0, 2},
+   {1, 0},
+   {1, 2},
+   {1, 1},
+   {1, 3}
+};
+
+static const int step_offsets[6][2] = {
+   {0, 2},
+   {0, 2},
+   {-1, 2},
+   {-1, 2},
+   {-1, 1},
+   {-1, 1}
+};
+
+
+static boolean
+i915_miptree_layout(struct pipe_context *pipe, struct i915_texture * tex)
+{
+   struct pipe_texture *pt = &tex->base;
+   unsigned level;
+
+   switch (pt->target) {
+   case PIPE_TEXTURE_CUBE: {
+         const unsigned dim = pt->width[0];
+         unsigned face;
+         unsigned lvlWidth = pt->width[0], lvlHeight = pt->height[0];
+
+         assert(lvlWidth == lvlHeight); /* cubemap images are square */
+
+         /* double pitch for cube layouts */
+         tex->pitch = ((dim * pt->cpp * 2 + 3) & ~3) / pt->cpp;
+         tex->total_height = dim * 4;
+
+         for (level = 0; level <= pt->last_level; level++) {
+            i915_miptree_set_level_info(tex, level, 6,
+                                         0, 0,
+                                         /*OLD: tex->pitch, tex->total_height,*/
+                                         lvlWidth, lvlHeight,
+                                         1);
+            lvlWidth /= 2;
+            lvlHeight /= 2;
+         }
+
+         for (face = 0; face < 6; face++) {
+            unsigned x = initial_offsets[face][0] * dim;
+            unsigned y = initial_offsets[face][1] * dim;
+            unsigned d = dim;
+
+            for (level = 0; level <= pt->last_level; level++) {
+               i915_miptree_set_image_offset(tex, level, face, x, y);
+               d >>= 1;
+               x += step_offsets[face][0] * d;
+               y += step_offsets[face][1] * d;
+            }
+         }
+         break;
+      }
+   case PIPE_TEXTURE_3D:{
+         unsigned width = pt->width[0];
+         unsigned height = pt->height[0];
+         unsigned depth = pt->depth[0];
+         unsigned stack_height = 0;
+
+         /* Calculate the size of a single slice. 
+          */
+         tex->pitch = ((pt->width[0] * pt->cpp + 3) & ~3) / pt->cpp;
+
+         /* XXX: hardware expects/requires 9 levels at minimum.
+          */
+         for (level = 0; level <= MAX2(8, pt->last_level);
+              level++) {
+            i915_miptree_set_level_info(tex, level, depth, 0, tex->total_height,
+                                         width, height, depth);
+
+
+            stack_height += MAX2(2, height);
+
+            width = minify(width);
+            height = minify(height);
+            depth = minify(depth);
+         }
+
+         /* Fixup depth image_offsets: 
+          */
+         depth = pt->depth[0];
+         for (level = 0; level <= pt->last_level; level++) {
+            unsigned i;
+            for (i = 0; i < depth; i++) 
+               i915_miptree_set_image_offset(tex, level, i,
+                                              0, i * stack_height);
+
+            depth = minify(depth);
+         }
+
+
+         /* Multiply slice size by texture depth for total size.  It's
+          * remarkable how wasteful of memory the i915 texture layouts
+          * are.  They are largely fixed in the i945.
+          */
+         tex->total_height = stack_height * pt->depth[0];
+         break;
+      }
+
+   default:{
+         unsigned width = pt->width[0];
+         unsigned height = pt->height[0];
+	 unsigned img_height;
+
+         tex->pitch = ((pt->width[0] * pt->cpp + 3) & ~3) / pt->cpp;
+         tex->total_height = 0;
+
+         for (level = 0; level <= pt->last_level; level++) {
+            i915_miptree_set_level_info(tex, level, 1,
+                                         0, tex->total_height,
+                                         width, height, 1);
+
+            if (pt->compressed)
+               img_height = MAX2(1, height / 4);
+            else
+               img_height = (MAX2(2, height) + 1) & ~1;
+
+	    tex->total_height += img_height;
+
+            width = minify(width);
+            height = minify(height);
+         }
+         break;
+      }
+   }
+   /*
+   DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
+       tex->pitch,
+       tex->total_height, pt->cpp, tex->pitch * tex->total_height * pt->cpp);
+   */
+
+   return TRUE;
+}
+
+
+static boolean
+i945_miptree_layout(struct pipe_context *pipe, struct i915_texture * tex)
+{
+   struct pipe_texture *pt = &tex->base;
+   unsigned level;
+
+   switch (pt->target) {
+   case PIPE_TEXTURE_CUBE:{
+         const unsigned dim = pt->width[0];
+         unsigned face;
+         unsigned lvlWidth = pt->width[0], lvlHeight = pt->height[0];
+
+         assert(lvlWidth == lvlHeight); /* cubemap images are square */
+
+         /* Depending on the size of the largest images, pitch can be
+          * determined either by the old-style packing of cubemap faces,
+          * or the final row of 4x4, 2x2 and 1x1 faces below this. 
+          */
+         if (dim > 32)
+            tex->pitch = ((dim * pt->cpp * 2 + 3) & ~3) / pt->cpp;
+         else
+            tex->pitch = 14 * 8;
+
+         tex->total_height = dim * 4 + 4;
+
+         /* Set all the levels to effectively occupy the whole rectangular region. 
+          */
+         for (level = 0; level <= pt->last_level; level++) {
+            i915_miptree_set_level_info(tex, level, 6,
+                                         0, 0,
+                                         lvlWidth, lvlHeight, 1);
+	    lvlWidth /= 2;
+	    lvlHeight /= 2;
+	 }
+
+
+         for (face = 0; face < 6; face++) {
+            unsigned x = initial_offsets[face][0] * dim;
+            unsigned y = initial_offsets[face][1] * dim;
+            unsigned d = dim;
+
+            if (dim == 4 && face >= 4) {
+               y = tex->total_height - 4;
+               x = (face - 4) * 8;
+            }
+            else if (dim < 4 && (face > 0)) {
+               y = tex->total_height - 4;
+               x = face * 8;
+            }
+
+            for (level = 0; level <= pt->last_level; level++) {
+               i915_miptree_set_image_offset(tex, level, face, x, y);
+
+               d >>= 1;
+
+               switch (d) {
+               case 4:
+                  switch (face) {
+                  case PIPE_TEX_FACE_POS_X:
+                  case PIPE_TEX_FACE_NEG_X:
+                     x += step_offsets[face][0] * d;
+                     y += step_offsets[face][1] * d;
+                     break;
+                  case PIPE_TEX_FACE_POS_Y:
+                  case PIPE_TEX_FACE_NEG_Y:
+                     y += 12;
+                     x -= 8;
+                     break;
+                  case PIPE_TEX_FACE_POS_Z:
+                  case PIPE_TEX_FACE_NEG_Z:
+                     y = tex->total_height - 4;
+                     x = (face - 4) * 8;
+                     break;
+                  }
+
+               case 2:
+                  y = tex->total_height - 4;
+                  x = 16 + face * 8;
+                  break;
+
+               case 1:
+                  x += 48;
+                  break;
+
+               default:
+                  x += step_offsets[face][0] * d;
+                  y += step_offsets[face][1] * d;
+                  break;
+               }
+            }
+         }
+         break;
+      }
+   case PIPE_TEXTURE_3D:{
+         unsigned width = pt->width[0];
+         unsigned height = pt->height[0];
+         unsigned depth = pt->depth[0];
+         unsigned pack_x_pitch, pack_x_nr;
+         unsigned pack_y_pitch;
+         unsigned level;
+
+         tex->pitch = ((pt->width[0] * pt->cpp + 3) & ~3) / pt->cpp;
+         tex->total_height = 0;
+
+         pack_y_pitch = MAX2(pt->height[0], 2);
+         pack_x_pitch = tex->pitch;
+         pack_x_nr = 1;
+
+         for (level = 0; level <= pt->last_level; level++) {
+            unsigned nr_images = pt->target == PIPE_TEXTURE_3D ? depth : 6;
+            int x = 0;
+            int y = 0;
+            unsigned q, j;
+
+            i915_miptree_set_level_info(tex, level, nr_images,
+                                         0, tex->total_height,
+                                         width, height, depth);
+
+            for (q = 0; q < nr_images;) {
+               for (j = 0; j < pack_x_nr && q < nr_images; j++, q++) {
+                  i915_miptree_set_image_offset(tex, level, q, x, y);
+                  x += pack_x_pitch;
+               }
+
+               x = 0;
+               y += pack_y_pitch;
+            }
+
+
+            tex->total_height += y;
+
+            if (pack_x_pitch > 4) {
+               pack_x_pitch >>= 1;
+               pack_x_nr <<= 1;
+               assert(pack_x_pitch * pack_x_nr <= tex->pitch);
+            }
+
+            if (pack_y_pitch > 2) {
+               pack_y_pitch >>= 1;
+            }
+
+            width = minify(width);
+            height = minify(height);
+            depth = minify(depth);
+         }
+         break;
+      }
+
+   case PIPE_TEXTURE_1D:
+   case PIPE_TEXTURE_2D:
+//   case PIPE_TEXTURE_RECTANGLE:
+         i945_miptree_layout_2d(tex);
+         break;
+   default:
+      assert(0);
+      return FALSE;
+   }
+
+   /*
+   DBG("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
+       tex->pitch,
+       tex->total_height, pt->cpp, tex->pitch * tex->total_height * pt->cpp);
+   */
+
+   return TRUE;
+}
+
+
+struct pipe_texture *
+i915_texture_create(struct pipe_context *pipe,
+                    const struct pipe_texture *templat)
+{
+   struct i915_texture *tex = CALLOC_STRUCT(i915_texture);
+
+   if (tex) {
+      struct i915_context *i915 = i915_context(pipe);
+
+      tex->base = *templat;
+
+      if (i915->flags.is_i945 ? i945_miptree_layout(pipe, tex) :
+	  i915_miptree_layout(pipe, tex))
+	 tex->buffer = pipe->winsys->buffer_create(pipe->winsys, 64,
+                                                   PIPE_BUFFER_USAGE_PIXEL,
+                                                   tex->pitch * tex->base.cpp *
+                                                   tex->total_height);
+
+      if (!tex->buffer) {
+	 FREE(tex);
+	 return NULL;
+      }
+   }
+
+   return &tex->base;
+}
+
+
+void
+i915_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 i915_texture *tex = (struct i915_texture *)*pt;
+      uint i;
+
+      /*
+      DBG("%s deleting %p\n", __FUNCTION__, (void *) tex);
+      */
+
+      pipe_buffer_reference(pipe->winsys, &tex->buffer, NULL);
+
+      for (i = 0; i < PIPE_MAX_TEXTURE_LEVELS; i++)
+         if (tex->image_offset[i])
+            FREE(tex->image_offset[i]);
+
+      FREE(tex);
+   }
+   *pt = NULL;
+}