diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_blitter.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_blitter.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h index 20e69ed5b73..19015844ef7 100644 --- a/src/gallium/auxiliary/util/u_blitter.h +++ b/src/gallium/auxiliary/util/u_blitter.h @@ -276,7 +276,7 @@ void util_blitter_default_src_texture(struct pipe_sampler_view *src_templ, /** * Copy data from one buffer to another using the Stream Output functionality. - * Some alignment is required, otherwise software fallback is used. + * 4-byte alignment is required, otherwise software fallback is used. */ void util_blitter_copy_buffer(struct blitter_context *blitter, struct pipe_resource *dst, @@ -286,6 +286,22 @@ void util_blitter_copy_buffer(struct blitter_context *blitter, unsigned size); /** + * Clear the contents of a buffer using the Stream Output functionality. + * 4-byte alignment is required. + * + * "num_channels" can be 1, 2, 3, or 4, and specifies if the clear value is + * R, RG, RGB, or RGBA. + * + * For each element, only "num_channels" components of "clear_value" are + * copied to the buffer, then the offset is incremented by num_channels*4. + */ +void util_blitter_clear_buffer(struct blitter_context *blitter, + struct pipe_resource *dst, + unsigned offset, unsigned size, + unsigned num_channels, + const union pipe_color_union *clear_value); + +/** * Clear a region of a (color) surface to a constant value. * * These states must be saved in the blitter in addition to the state objects |