diff options
author | Brian Paul <brianp@vmware.com> | 2010-05-03 17:28:32 -0600 |
---|---|---|
committer | Brian Paul <brianp@vmware.com> | 2010-05-03 17:28:32 -0600 |
commit | 8b0c217f2bc123bffd25cc4977d6abb1b3fa8186 (patch) | |
tree | d93fa0fc19b7b582570fd83f85fcf84090a7a041 /src/gallium/auxiliary/util/u_surface.c | |
parent | 6c8c88f02f0dc9cf39ce51d068525a94fccd5dc7 (diff) | |
download | external_mesa3d-8b0c217f2bc123bffd25cc4977d6abb1b3fa8186.zip external_mesa3d-8b0c217f2bc123bffd25cc4977d6abb1b3fa8186.tar.gz external_mesa3d-8b0c217f2bc123bffd25cc4977d6abb1b3fa8186.tar.bz2 |
gallium: move surface utility functions into u_surface.c
This is a better place than in u_rect.c
Diffstat (limited to 'src/gallium/auxiliary/util/u_surface.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_surface.c | 157 |
1 files changed, 155 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/util/u_surface.c b/src/gallium/auxiliary/util/u_surface.c index 35a9b48..b47c92c 100644 --- a/src/gallium/auxiliary/util/u_surface.c +++ b/src/gallium/auxiliary/util/u_surface.c @@ -32,12 +32,14 @@ */ +#include "pipe/p_defines.h" #include "pipe/p_screen.h" #include "pipe/p_state.h" -#include "pipe/p_defines.h" -#include "util/u_inlines.h" +#include "util/u_format.h" +#include "util/u_inlines.h" #include "util/u_memory.h" +#include "util/u_rect.h" #include "util/u_surface.h" @@ -114,3 +116,154 @@ util_destroy_rgba_surface(struct pipe_resource *texture, pipe_surface_reference(&surface, NULL); pipe_resource_reference(&texture, NULL); } + + + +/** + * Fallback function for pipe->surface_copy(). + * Note: (X,Y)=(0,0) is always the upper-left corner. + * if do_flip, flip the image vertically on its way from src rect to dst rect. + */ +void +util_surface_copy(struct pipe_context *pipe, + boolean do_flip, + struct pipe_surface *dst, + unsigned dst_x, unsigned dst_y, + struct pipe_surface *src, + unsigned src_x, unsigned src_y, + unsigned w, unsigned h) +{ + struct pipe_transfer *src_trans, *dst_trans; + void *dst_map; + const void *src_map; + enum pipe_format src_format, dst_format; + + assert(src->texture && dst->texture); + if (!src->texture || !dst->texture) + return; + + src_format = src->texture->format; + dst_format = dst->texture->format; + + src_trans = pipe_get_transfer(pipe, + src->texture, + src->face, + src->level, + src->zslice, + PIPE_TRANSFER_READ, + src_x, src_y, w, h); + + dst_trans = pipe_get_transfer(pipe, + dst->texture, + dst->face, + dst->level, + dst->zslice, + PIPE_TRANSFER_WRITE, + dst_x, dst_y, w, h); + + assert(util_format_get_blocksize(dst_format) == util_format_get_blocksize(src_format)); + assert(util_format_get_blockwidth(dst_format) == util_format_get_blockwidth(src_format)); + assert(util_format_get_blockheight(dst_format) == util_format_get_blockheight(src_format)); + + src_map = pipe->transfer_map(pipe, src_trans); + dst_map = pipe->transfer_map(pipe, dst_trans); + + assert(src_map); + assert(dst_map); + + if (src_map && dst_map) { + /* If do_flip, invert src_y position and pass negative src stride */ + util_copy_rect(dst_map, + dst_format, + dst_trans->stride, + 0, 0, + w, h, + src_map, + do_flip ? -(int) src_trans->stride : src_trans->stride, + 0, + do_flip ? h - 1 : 0); + } + + pipe->transfer_unmap(pipe, src_trans); + pipe->transfer_unmap(pipe, dst_trans); + + pipe->transfer_destroy(pipe, src_trans); + pipe->transfer_destroy(pipe, dst_trans); +} + + + +#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8)) + + +/** + * Fallback for pipe->surface_fill() function. + */ +void +util_surface_fill(struct pipe_context *pipe, + struct pipe_surface *dst, + unsigned dstx, unsigned dsty, + unsigned width, unsigned height, unsigned value) +{ + struct pipe_transfer *dst_trans; + void *dst_map; + + assert(dst->texture); + if (!dst->texture) + return; + dst_trans = pipe_get_transfer(pipe, + dst->texture, + dst->face, + dst->level, + dst->zslice, + PIPE_TRANSFER_WRITE, + dstx, dsty, width, height); + + dst_map = pipe->transfer_map(pipe, dst_trans); + + assert(dst_map); + + if (dst_map) { + assert(dst_trans->stride > 0); + + switch (util_format_get_blocksize(dst->texture->format)) { + case 1: + case 2: + case 4: + util_fill_rect(dst_map, dst->texture->format, + dst_trans->stride, + 0, 0, width, height, value); + break; + case 8: + { + /* expand the 4-byte clear value to an 8-byte value */ + ushort *row = (ushort *) dst_map; + ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff); + ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff); + ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff); + ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff); + unsigned i, j; + val0 = (val0 << 8) | val0; + val1 = (val1 << 8) | val1; + val2 = (val2 << 8) | val2; + val3 = (val3 << 8) | val3; + for (i = 0; i < height; i++) { + for (j = 0; j < width; j++) { + row[j*4+0] = val0; + row[j*4+1] = val1; + row[j*4+2] = val2; + row[j*4+3] = val3; + } + row += dst_trans->stride/2; + } + } + break; + default: + assert(0); + break; + } + } + + pipe->transfer_unmap(pipe, dst_trans); + pipe->transfer_destroy(pipe, dst_trans); +} |