diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_rect.c')
| -rw-r--r-- | src/gallium/auxiliary/util/u_rect.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_rect.c b/src/gallium/auxiliary/util/u_rect.c index b31ab5415f..f5619ef791 100644 --- a/src/gallium/auxiliary/util/u_rect.c +++ b/src/gallium/auxiliary/util/u_rect.c @@ -32,6 +32,8 @@ #include "pipe/p_defines.h" #include "pipe/p_format.h" +#include "pipe/p_context.h" +#include "pipe/p_screen.h" #include "util/u_rect.h" @@ -148,3 +150,179 @@ pipe_fill_rect(ubyte * dst, break; } } + + + +/** + * 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. + * XXX should probably put this in new u_surface.c file... + */ +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_screen *screen = pipe->screen; + struct pipe_surface *new_src = NULL, *new_dst = NULL; + void *dst_map; + const void *src_map; + + assert(dst->block.size == src->block.size); + assert(dst->block.width == src->block.width); + assert(dst->block.height == src->block.height); + + if ((src->usage & PIPE_BUFFER_USAGE_CPU_READ) == 0) { + /* Need to create new src surface which is CPU readable */ + assert(src->texture); + if (!src->texture) + return; + new_src = screen->get_tex_surface(screen, + src->texture, + src->face, + src->level, + src->zslice, + PIPE_BUFFER_USAGE_CPU_READ); + src = new_src; + } + + if ((dst->usage & PIPE_BUFFER_USAGE_CPU_WRITE) == 0) { + /* Need to create new dst surface which is CPU writable */ + assert(dst->texture); + if (!dst->texture) + return; + new_dst = screen->get_tex_surface(screen, + dst->texture, + dst->face, + dst->level, + dst->zslice, + PIPE_BUFFER_USAGE_CPU_WRITE); + dst = new_dst; + } + + src_map = pipe->screen->surface_map(screen, + src, PIPE_BUFFER_USAGE_CPU_READ); + dst_map = pipe->screen->surface_map(screen, + dst, PIPE_BUFFER_USAGE_CPU_WRITE); + + assert(src_map); + assert(dst_map); + + if (src_map && dst_map) { + /* If do_flip, invert src_y position and pass negative src stride */ + pipe_copy_rect(dst_map, + &dst->block, + dst->stride, + dst_x, dst_y, + w, h, + src_map, + do_flip ? -(int) src->stride : src->stride, + src_x, src_y); + } + + pipe->screen->surface_unmap(pipe->screen, src); + pipe->screen->surface_unmap(pipe->screen, dst); + + if (new_src) + screen->tex_surface_release(screen, &new_src); + if (new_dst) + screen->tex_surface_release(screen, &new_dst); +} + + + +static void * +get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y) +{ + return (char *)dst_map + + y / dst->block.height * dst->stride + + x / dst->block.width * dst->block.size; +} + + +#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8)) + + +/** + * Fallback for pipe->surface_fill() function. + * XXX should probably put this in new u_surface.c file... + */ +void +util_surface_fill(struct pipe_context *pipe, + struct pipe_surface *dst, + unsigned dstx, unsigned dsty, + unsigned width, unsigned height, unsigned value) +{ + struct pipe_screen *screen = pipe->screen; + struct pipe_surface *new_dst = NULL; + void *dst_map; + + if ((dst->usage & PIPE_BUFFER_USAGE_CPU_WRITE) == 0) { + /* Need to create new dst surface which is CPU writable */ + assert(dst->texture); + if (!dst->texture) + return; + new_dst = screen->get_tex_surface(screen, + dst->texture, + dst->face, + dst->level, + dst->zslice, + PIPE_BUFFER_USAGE_CPU_WRITE); + dst = new_dst; + } + + dst_map = pipe->screen->surface_map(screen, + dst, PIPE_BUFFER_USAGE_CPU_WRITE); + + assert(dst_map); + + if (dst_map) { + assert(dst->stride > 0); + + switch (dst->block.size) { + case 1: + case 2: + case 4: + pipe_fill_rect(dst_map, &dst->block, dst->stride, + dstx, dsty, width, height, value); + break; + case 8: + { + /* expand the 4-byte clear value to an 8-byte value */ + ushort *row = (ushort *) get_pointer(dst, dst_map, dstx, dsty); + 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->stride/2; + } + } + break; + default: + assert(0); + break; + } + } + + pipe->screen->surface_unmap(pipe->screen, dst); + + if (new_dst) + screen->tex_surface_release(screen, &new_dst); +} |