diff options
author | Jakob Bornecrantz <jakob@tungstengraphics.com> | 2008-11-24 20:01:48 +0100 |
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committer | Jakob Bornecrantz <jakob@tungstengraphics.com> | 2008-11-24 20:01:48 +0100 |
commit | f0e3366b0860047632bec59c8ee815670cfb2d25 (patch) | |
tree | 43ce8399982d7b3a779490dbad01d9a7ff1c3833 /src/gallium/auxiliary/util/u_linear.h | |
parent | 0b9e96fae9493d5d58f046e01c983a3c4267090e (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.h | 60 |
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 */ |