diff options
Diffstat (limited to 'src/gallium/auxiliary')
-rw-r--r-- | src/gallium/auxiliary/util/Makefile | 1 | ||||
-rw-r--r-- | src/gallium/auxiliary/util/u_linear.c | 69 | ||||
-rw-r--r-- | src/gallium/auxiliary/util/u_linear.h | 60 |
3 files changed, 130 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/Makefile b/src/gallium/auxiliary/util/Makefile index b3d1045a8f..f611f82773 100644 --- a/src/gallium/auxiliary/util/Makefile +++ b/src/gallium/auxiliary/util/Makefile @@ -11,6 +11,7 @@ C_SOURCES = \ u_handle_table.c \ u_hash_table.c \ u_keymap.c \ + u_linear.c \ u_math.c \ u_mm.c \ u_rect.c \ diff --git a/src/gallium/auxiliary/util/u_linear.c b/src/gallium/auxiliary/util/u_linear.c new file mode 100644 index 0000000000..a76704ffc7 --- /dev/null +++ b/src/gallium/auxiliary/util/u_linear.c @@ -0,0 +1,69 @@ + +#include "pipe/p_debug.h" +#include "u_linear.h" + +void +pipe_linear_to_tile(size_t src_stride, void *src_ptr, + struct pipe_tile_info *t, void *dst_ptr) +{ + int x, y, z; + char *ptr; + size_t bytes = t->cols * t->block.size; + + + assert(pipe_linear_check_tile(t)); + + /* lets write lineary 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; + ptr += src_stride; + } + } + } +} + +void pipe_linear_from_tile(struct pipe_tile_info *t, void *src_ptr, + size_t dst_stride, void *dst_ptr) +{ + int x, y, z; + char *ptr; + size_t bytes = t->cols * t->block.size; + + /* lets read lineary 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; + ptr += dst_stride; + } + } + } +} + +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) +{ + t->block = *block; + + t->tile.width = tile_width; + t->tile.height = tile_height; + t->cols = t->tile.width / t->block.width; + t->rows = t->tile.height / t->block.height; + t->tile.size = t->cols * t->rows * t->block.size; + + t->tiles_x = tiles_x; + t->tiles_y = tiles_y; + t->stride = t->cols * t->tiles_x * t->block.size; + t->size = t->tiles_x * t->tiles_y * t->tile.size; +} 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 */ |