Code reorganization: move files into their places.

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

1 files changed, 353 insertions, 0 deletions

diff --git a/src/gallium/drivers/i965simple/brw_tex_layout.c b/src/gallium/drivers/i965simple/brw_tex_layout.c
new file mode 100644
index 00000000000..90561f1307d
--- /dev/null
+++ b/src/gallium/drivers/i965simple/brw_tex_layout.c
@@ -0,0 +1,353 @@
+/*
+ Copyright (C) Intel Corp.  2006.  All Rights Reserved.
+ Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+ develop this 3D driver.
+
+ 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 (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 NONINFRINGEMENT.
+ IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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]>
+  */
+
+
+/* Code to layout images in a mipmap tree for i965.
+ */
+
+#include "brw_tex_layout.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_util.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_winsys.h"
+
+#include "brw_context.h"
+
+#define FILE_DEBUG_FLAG DEBUG_TEXTURE
+
+#if 0
+unsigned intel_compressed_alignment(unsigned internalFormat)
+{
+    unsigned alignment = 4;
+
+    switch (internalFormat) {
+    case GL_COMPRESSED_RGB_FXT1_3DFX:
+    case GL_COMPRESSED_RGBA_FXT1_3DFX:
+        alignment = 8;
+        break;
+
+    default:
+        break;
+    }
+
+    return alignment;
+}
+#endif
+
+static unsigned minify( unsigned d )
+{
+   return MAX2(1, d>>1);
+}
+
+
+static boolean brw_miptree_layout(struct pipe_context *, struct brw_texture *);
+
+static void intel_miptree_set_image_offset(struct brw_texture *tex,
+                                           unsigned level,
+                                           unsigned img,
+                                           unsigned x, unsigned y)
+{
+   struct pipe_texture *pt = &tex->base;
+   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) * pt->cpp;
+}
+
+static void intel_miptree_set_level_info(struct brw_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 i945_miptree_layout_2d(struct brw_texture *tex)
+{
+   struct pipe_texture *pt = &tex->base;
+   unsigned 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];
+
+#if 0
+   if (pt->compressed) {
+      align_w = intel_compressed_alignment(pt->internal_format);
+      tex->pitch = ALIGN(pt->width[0], align_w);
+   }
+#endif
+
+   /* May need to adjust pitch to accomodate the placement of
+    * the 2nd mipmap.  This occurs when the alignment
+    * constraints of mipmap placement push the right edge of the
+    * 2nd mipmap out past the width of its parent.
+    */
+   if (pt->last_level > 0) {
+      unsigned mip1_width;
+
+      if (pt->compressed) {
+         mip1_width = align(minify(pt->width[0]), align_w)
+                      + align(minify(minify(pt->width[0])), align_w);
+      } else {
+         mip1_width = align(minify(pt->width[0]), align_w)
+                      + minify(minify(pt->width[0]));
+      }
+
+      if (mip1_width > tex->pitch) {
+         tex->pitch = mip1_width;
+      }
+   }
+
+   /* Pitch must be a whole number of dwords, even though we
+    * express it in texels.
+    */
+   tex->pitch = align(tex->pitch * pt->cpp, 4) / pt->cpp;
+   tex->total_height = 0;
+
+   for (level = 0; level <= pt->last_level; level++) {
+      unsigned img_height;
+
+      intel_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(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.
+       */
+      if (level == 1) {
+	 x += align(width, align_w);
+      }
+      else {
+	 y += img_height;
+      }
+
+      width  = minify(width);
+      height = minify(height);
+   }
+}
+
+static boolean brw_miptree_layout(struct pipe_context *pipe, struct brw_texture *tex)
+{
+   struct pipe_texture *pt = &tex->base;
+   /* XXX: these vary depending on image format:
+    */
+/*    int align_w = 4; */
+
+   switch (pt->target) {
+   case PIPE_TEXTURE_CUBE:
+   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;
+      unsigned align_h = 2;
+      unsigned align_w = 4;
+
+      tex->total_height = 0;
+#if 0
+      if (pt->compressed) {
+         align_w = intel_compressed_alignment(pt->internal_format);
+         pt->pitch = align(width, align_w);
+         pack_y_pitch = (height + 3) / 4;
+      } else
+#endif
+      {
+         tex->pitch = align(pt->width[0] * pt->cpp, 4) / pt->cpp;
+         pack_y_pitch = align(pt->height[0], align_h);
+      }
+
+      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;
+	 uint q, j;
+
+	 intel_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++) {
+	       intel_miptree_set_image_offset(tex, level, q, x, y);
+	       x += pack_x_pitch;
+	    }
+
+	    x = 0;
+	    y += pack_y_pitch;
+	 }
+
+
+	 tex->total_height += y;
+	 width  = minify(width);
+	 height = minify(height);
+	 depth  = minify(depth);
+
+         if (pt->compressed) {
+            pack_y_pitch = (height + 3) / 4;
+
+            if (pack_x_pitch > align(width, align_w)) {
+               pack_x_pitch = align(width, align_w);
+               pack_x_nr <<= 1;
+            }
+         } else {
+            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;
+               pack_y_pitch = align(pack_y_pitch, align_h);
+            }
+         }
+
+      }
+      break;
+   }
+
+   default:
+      i945_miptree_layout_2d(tex);
+      break;
+   }
+#if 0
+   PRINT("%s: %dx%dx%d - sz 0x%x\n", __FUNCTION__,
+       pt->pitch,
+       pt->total_height,
+       pt->cpp,
+       pt->pitch * pt->total_height * pt->cpp );
+#endif
+
+   return TRUE;
+}
+
+
+struct pipe_texture *
+brw_texture_create(struct pipe_context *pipe, const struct pipe_texture *templat)
+{
+   struct brw_texture *tex = CALLOC_STRUCT(brw_texture);
+
+   if (tex) {
+      tex->base = *templat;
+
+      if (brw_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
+brw_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 brw_texture *tex = (struct brw_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;
+}