gallium: Fix uninitialized variable warning in compute test.

[mesa.git] / src / gallium / auxiliary / util / u_linear.c

diff --git a/src/gallium/auxiliary/util/u_linear.c b/src/gallium/auxiliary/util/u_linear.c
index a76704ffc7ff1c15117a6250092dd1498a073ea9..eed7df966be15d66100dc085dc0cc3af83ba7a7c 100644 (file)
--- a/src/gallium/auxiliary/util/u_linear.c
+++ b/src/gallium/auxiliary/util/u_linear.c
@@ -1,47 +1,79 @@
+/**************************************************************************
+ * 
+ * Copyright 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, 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 VMWARE 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.
+ * 
+ **************************************************************************/
 
-#include "pipe/p_debug.h"
+/**
+ * Functions for converting tiled data to linear and vice versa.
+ */
+
+
+#include "util/u_debug.h"
 #include "u_linear.h"
 
 void
-pipe_linear_to_tile(size_t src_stride, void *src_ptr,
+pipe_linear_to_tile(size_t src_stride, const void *src_ptr,
                    struct pipe_tile_info *t, void *dst_ptr)
 {
-   int x, y, z;
+   unsigned x, y, z;
    char *ptr;
    size_t bytes = t->cols * t->block.size;
-
+   char *dst_ptr2 = (char *) dst_ptr;
 
    assert(pipe_linear_check_tile(t));
 
-   /* lets write lineary to the tiled buffer */
+   /* lets write linearly to the tiled buffer */
    for (y = 0; y < t->tiles_y; y++) {
       for (x = 0; x < t->tiles_x; x++) {
         /* this inner loop could be replace with SSE magic */
         ptr = (char*)src_ptr + src_stride * t->rows * y + bytes * x;
         for (z = 0; z < t->rows; z++) {
-           memcpy(dst_ptr, ptr, bytes);
-           dst_ptr += bytes;
+           memcpy(dst_ptr2, ptr, bytes);
+           dst_ptr2 += bytes;
            ptr += src_stride;
         }
       }
    }
 }
 
-void pipe_linear_from_tile(struct pipe_tile_info *t, void  *src_ptr,
+void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr,
                           size_t dst_stride, void *dst_ptr)
 {
-   int x, y, z;
+   unsigned x, y, z;
    char *ptr;
    size_t bytes = t->cols * t->block.size;
+   const char *src_ptr2 = (const char *) src_ptr;
 
-   /* lets read lineary from the tiled buffer */
+   /* lets read linearly from the tiled buffer */
    for (y = 0; y < t->tiles_y; y++) {
       for (x = 0; x < t->tiles_x; x++) {
         /* this inner loop could be replace with SSE magic */
         ptr = (char*)dst_ptr + dst_stride * t->rows * y + bytes * x;
         for (z = 0; z < t->rows; z++) {
-           memcpy(ptr, src_ptr, bytes);
-           src_ptr += bytes;
+           memcpy(ptr, src_ptr2, bytes);
+           src_ptr2 += bytes;
            ptr += dst_stride;
         }
       }
@@ -50,7 +82,7 @@ void pipe_linear_from_tile(struct pipe_tile_info *t, void  *src_ptr,
 
 void
 pipe_linear_fill_info(struct pipe_tile_info *t,
-                     struct pipe_format_block *block,
+                     const struct u_linear_format_block *block,
                      unsigned tile_width, unsigned tile_height,
                      unsigned tiles_x, unsigned tiles_y)
 {