r300g: cleanup texture creation code

This decouples initializing a texture layout/miptree description
from an actual texture creation, it also partially unifies texture_create
and texture_from_handle.

r300_texture inherits r300_texture_desc, which inherits u_resource.

The CBZB clear criteria are moved to r300_texture_desc::cbzb_allowed[level].

And other minor cleanups.

1 files changed, 57 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_texture_desc.h b/src/gallium/drivers/r300/r300_texture_desc.h
new file mode 100644
index 0000000000..95de66f654
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_texture_desc.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
+ * Copyright 2010 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+#ifndef R300_TEXTURE_DESC_H
+#define R300_TEXTURE_DESC_H
+
+#include "r300_defines.h"
+
+struct pipe_resource;
+struct r300_screen;
+struct r300_texture_desc;
+struct r300_texture;
+
+enum r300_dim {
+    DIM_WIDTH  = 0,
+    DIM_HEIGHT = 1
+};
+
+unsigned r300_get_pixel_alignment(enum pipe_format format,
+                                  unsigned num_samples,
+                                  enum r300_buffer_tiling microtile,
+                                  enum r300_buffer_tiling macrotile,
+                                  enum r300_dim dim);
+
+boolean r300_texture_desc_init(struct r300_screen *rscreen,
+                               struct r300_texture_desc *desc,
+                               const struct pipe_resource *base,
+                               enum r300_buffer_tiling microtile,
+                               enum r300_buffer_tiling macrotile,
+                               unsigned stride_in_bytes_override,
+                               unsigned max_buffer_size);
+
+unsigned r300_texture_get_offset(struct r300_texture_desc *desc,
+                                 unsigned level, unsigned zslice,
+                                 unsigned face);
+
+#endif