diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/r600/r600_texture.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c index 0c9b999375..06d17f7709 100644 --- a/src/gallium/drivers/r600/r600_texture.c +++ b/src/gallium/drivers/r600/r600_texture.c @@ -466,6 +466,36 @@ static INLINE unsigned u_box_volume( const struct pipe_box *box ) }; +/* Figure out whether u_blitter will fallback to a transfer operation. + * If so, don't use a staging resource. + */ +static boolean permit_hardware_blit(struct pipe_screen *screen, + struct pipe_resource *res) +{ + unsigned bind; + + if (util_format_is_depth_or_stencil(res->format)) + bind = PIPE_BIND_DEPTH_STENCIL; + else + bind = PIPE_BIND_RENDER_TARGET; + + if (!screen->is_format_supported(screen, + res->format, + res->target, + res->nr_samples, + bind, 0)) + return FALSE; + + if (!screen->is_format_supported(screen, + res->format, + res->target, + res->nr_samples, + PIPE_BIND_SAMPLER_VIEW, 0)) + return FALSE; + + return TRUE; +} + struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx, struct pipe_resource *texture, struct pipe_subresource sr, @@ -506,6 +536,10 @@ struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx, !(usage & (PIPE_TRANSFER_DONTBLOCK | PIPE_TRANSFER_UNSYNCHRONIZED))) use_staging_texture = TRUE; + if (!permit_hardware_blit(ctx->screen, texture) || + (texture->flags & R600_RESOURCE_FLAG_TRANSFER)) + use_staging_texture = FALSE; + trans = CALLOC_STRUCT(r600_transfer); if (trans == NULL) return NULL; |