It is useful for staging/shadow transfers for drivers to be able to blit BUFFERs. Treat them as R8 1D textures for this purpose.
Signed-off-by: Rob Clark <[email protected]> --- This works at least if 1D textures are linear, so I suppose might not work for all drivers. Although I'm not entirely sure what the point of a tiled 1D texture is. And I guess drivers for which this wouldn't work could continue to just not use u_blitter for BUFFERs. src/gallium/auxiliary/util/u_blitter.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c index 476ef08737e..7ba7b5aa57d 100644 --- a/src/gallium/auxiliary/util/u_blitter.c +++ b/src/gallium/auxiliary/util/u_blitter.c @@ -1445,7 +1445,10 @@ void util_blitter_default_dst_texture(struct pipe_surface *dst_templ, unsigned dstz) { memset(dst_templ, 0, sizeof(*dst_templ)); - dst_templ->format = util_format_linear(dst->format); + if (dst->target == PIPE_BUFFER) + dst_templ->format = PIPE_FORMAT_R8_UINT; + else + dst_templ->format = util_format_linear(dst->format); dst_templ->u.tex.level = dstlevel; dst_templ->u.tex.first_layer = dstz; dst_templ->u.tex.last_layer = dstz; @@ -1482,7 +1485,12 @@ void util_blitter_default_src_texture(struct blitter_context *blitter, else src_templ->target = src->target; - src_templ->format = util_format_linear(src->format); + if (src->target == PIPE_BUFFER) { + src_templ->target = PIPE_TEXTURE_1D; + src_templ->format = PIPE_FORMAT_R8_UINT; + } else { + src_templ->format = util_format_linear(src->format); + } src_templ->u.tex.first_level = srclevel; src_templ->u.tex.last_level = srclevel; src_templ->u.tex.first_layer = 0; -- 2.13.6 _______________________________________________ mesa-dev mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-dev
