diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_surface.c | 108 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_surface.h | 8 |
2 files changed, 115 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/util/u_surface.c b/src/gallium/auxiliary/util/u_surface.c index 9dd1002f5f6..cab7691c705 100644 --- a/src/gallium/auxiliary/util/u_surface.c +++ b/src/gallium/auxiliary/util/u_surface.c @@ -199,7 +199,6 @@ util_resource_copy_region(struct pipe_context *pipe, * Fallback for pipe->clear_render_target() function. * XXX this looks too hackish to be really useful. * cpp > 4 looks like a gross hack at best... - * and we're missing the equivalent clear_depth_stencil fallback. * Plus can't use these transfer fallbacks when clearing * multisampled surfaces for instance. */ @@ -278,3 +277,110 @@ util_clear_render_target(struct pipe_context *pipe, pipe->transfer_unmap(pipe, dst_trans); pipe->transfer_destroy(pipe, dst_trans); } + +/** + * Fallback for pipe->clear_stencil() function. + * sw fallback doesn't look terribly useful here. + * Plus can't use these transfer fallbacks when clearing + * multisampled surfaces for instance. + */ +void +util_clear_depth_stencil(struct pipe_context *pipe, + struct pipe_surface *dst, + unsigned clear_flags, + double depth, + unsigned stencil, + unsigned dstx, unsigned dsty, + unsigned width, unsigned height) +{ + struct pipe_transfer *dst_trans; + ubyte *dst_map; + boolean need_rmw = FALSE; + + if ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) && + ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) && + util_format_is_depth_and_stencil(dst->format)) + need_rmw = TRUE; + + assert(dst->texture); + if (!dst->texture) + return; + dst_trans = pipe_get_transfer(pipe, + dst->texture, + dst->face, + dst->level, + dst->zslice, + (need_rmw ? PIPE_TRANSFER_READ_WRITE : + PIPE_TRANSFER_WRITE), + dstx, dsty, width, height); + + dst_map = pipe->transfer_map(pipe, dst_trans); + + assert(dst_map); + + if (dst_map) { + unsigned dst_stride = dst_trans->stride; + unsigned zstencil = util_pack_z_stencil(dst->texture->format, depth, stencil); + unsigned i, j; + assert(dst_trans->stride > 0); + + switch (util_format_get_blocksize(dst->format)) { + case 1: + assert(dst->format == PIPE_FORMAT_S8_USCALED); + if(dst_stride == width) + memset(dst_map, (ubyte) zstencil, height * width); + else { + for (i = 0; i < height; i++) { + memset(dst_map, (ubyte) zstencil, width); + dst_map += dst_stride; + } + } + break; + case 2: + assert(dst->format == PIPE_FORMAT_Z16_UNORM); + for (i = 0; i < height; i++) { + uint16_t *row = (uint16_t *)dst_map; + for (j = 0; j < width; j++) + *row++ = (uint16_t) zstencil; + dst_map += dst_stride; + } + break; + case 4: + if (!need_rmw) { + for (i = 0; i < height; i++) { + uint32_t *row = (uint32_t *)dst_map; + for (j = 0; j < width; j++) + *row++ = zstencil; + dst_map += dst_stride; + } + } + else { + uint32_t dst_mask; + if (dst->format == PIPE_FORMAT_Z24_UNORM_S8_USCALED) + dst_mask = 0xffffff00; + else { + assert(dst->format == PIPE_FORMAT_S8_USCALED_Z24_UNORM); + dst_mask = 0xffffff; + } + if (clear_flags & PIPE_CLEAR_DEPTH) + dst_mask = ~dst_mask; + for (i = 0; i < height; i++) { + uint32_t *row = (uint32_t *)dst_map; + for (j = 0; j < width; j++) { + uint32_t tmp = *row & dst_mask; + *row++ = tmp & (zstencil & ~dst_mask); + } + dst_map += dst_stride; + } + } + break; + case 8: + default: + assert(0); + break; + } + } + + pipe->transfer_unmap(pipe, dst_trans); + pipe->transfer_destroy(pipe, dst_trans); +} diff --git a/src/gallium/auxiliary/util/u_surface.h b/src/gallium/auxiliary/util/u_surface.h index d8fb9f1d6f9..6cd12af3a8b 100644 --- a/src/gallium/auxiliary/util/u_surface.h +++ b/src/gallium/auxiliary/util/u_surface.h @@ -63,6 +63,14 @@ util_clear_render_target(struct pipe_context *pipe, unsigned dstx, unsigned dsty, unsigned width, unsigned height); +extern void +util_clear_depth_stencil(struct pipe_context *pipe, + struct pipe_surface *dst, + unsigned clear_flags, + double depth, + unsigned stencil, + unsigned dstx, unsigned dsty, + unsigned width, unsigned height); #endif /* U_SURFACE_H */ |