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authorJakob Bornecrantz <jakob@tungstengraphics.com>2008-11-24 20:01:48 +0100
committerJakob Bornecrantz <jakob@tungstengraphics.com>2008-11-24 20:01:48 +0100
commitf0e3366b0860047632bec59c8ee815670cfb2d25 (patch)
tree43ce8399982d7b3a779490dbad01d9a7ff1c3833 /src/gallium/auxiliary/util/u_linear.h
parent0b9e96fae9493d5d58f046e01c983a3c4267090e (diff)
util: Add generic tile and detile functions
Diffstat (limited to 'src/gallium/auxiliary/util/u_linear.h')
-rw-r--r--src/gallium/auxiliary/util/u_linear.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_linear.h b/src/gallium/auxiliary/util/u_linear.h
new file mode 100644
index 0000000000..e337cfd770
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_linear.h
@@ -0,0 +1,60 @@
+
+#ifndef U_LINEAR_H
+#define U_LINEAR_H
+
+#include "pipe/p_format.h"
+struct pipe_tile_info
+{
+ unsigned size;
+ unsigned stride;
+
+ /* The number of tiles */
+ unsigned tiles_x;
+ unsigned tiles_y;
+
+ /* size of each tile expressed in blocks */
+ unsigned cols;
+ unsigned rows;
+
+ /* Describe the tile in pixels */
+ struct pipe_format_block tile;
+
+ /* Describe each block within the tile */
+ struct pipe_format_block block;
+};
+
+void pipe_linear_to_tile(size_t src_stride, void *src_ptr,
+ struct pipe_tile_info *t, void *dst_ptr);
+
+void pipe_linear_from_tile(struct pipe_tile_info *t, void *src_ptr,
+ size_t dst_stride, void *dst_ptr);
+
+/**
+ * Convenience function to fillout a pipe_tile_info struct.
+ * @t info to fill out.
+ * @block block info about pixel layout
+ * @tile_width the width of the tile in pixels
+ * @tile_height the height of the tile in pixels
+ * @tiles_x number of tiles in x axis
+ * @tiles_y number of tiles in y axis
+ */
+void pipe_linear_fill_info(struct pipe_tile_info *t,
+ struct pipe_format_block *block,
+ unsigned tile_width, unsigned tile_height,
+ unsigned tiles_x, unsigned tiles_y);
+
+static INLINE boolean pipe_linear_check_tile(struct pipe_tile_info *t)
+{
+ if (t->tile.size != t->block.size * t->cols * t->rows)
+ return FALSE;
+
+ if (t->stride != t->block.size * t->cols * t->tiles_x)
+ return FALSE;
+
+ if (t->size < t->stride * t->rows * t->tiles_y)
+ return FALSE;
+
+ return TRUE;
+}
+
+#endif /* U_LINEAR_H */