diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_blitter.c | 140 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_blitter.h | 12 |
2 files changed, 152 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c index 2d20d708e7b..4ad7a6be4eb 100644 --- a/src/gallium/auxiliary/util/u_blitter.c +++ b/src/gallium/auxiliary/util/u_blitter.c @@ -1807,3 +1807,143 @@ void util_blitter_custom_color(struct blitter_context *blitter, blitter_restore_render_cond(ctx); blitter_unset_running_flag(ctx); } + +/* Return whether this is an RGBA, Z, S, or combined ZS format. + */ +static unsigned get_format_mask(enum pipe_format format) +{ + const struct util_format_description *desc = util_format_description(format); + + assert(desc); + + if (util_format_has_depth(desc)) { + if (util_format_has_stencil(desc)) { + return PIPE_MASK_ZS; + } else { + return PIPE_MASK_Z; + } + } else { + if (util_format_has_stencil(desc)) { + return PIPE_MASK_S; + } else { + return PIPE_MASK_RGBA; + } + } +} + +/* Return if the box is totally inside the resource. + */ +static boolean is_box_inside_resource(const struct pipe_resource *res, + const struct pipe_box *box, + unsigned level) +{ + unsigned width = 1, height = 1, depth = 1; + + switch (res->target) { + case PIPE_BUFFER: + width = res->width0; + height = 1; + depth = 1; + break; + case PIPE_TEXTURE_1D: + width = u_minify(res->width0, level); + height = 1; + depth = 1; + break; + case PIPE_TEXTURE_2D: + case PIPE_TEXTURE_RECT: + width = u_minify(res->width0, level); + height = u_minify(res->height0, level); + depth = 1; + break; + case PIPE_TEXTURE_3D: + width = u_minify(res->width0, level); + height = u_minify(res->height0, level); + depth = u_minify(res->depth0, level); + break; + case PIPE_TEXTURE_CUBE: + width = u_minify(res->width0, level); + height = u_minify(res->height0, level); + depth = 6; + break; + case PIPE_TEXTURE_1D_ARRAY: + width = u_minify(res->width0, level); + height = 1; + depth = res->array_size; + break; + case PIPE_TEXTURE_2D_ARRAY: + width = u_minify(res->width0, level); + height = u_minify(res->height0, level); + depth = res->array_size; + break; + case PIPE_MAX_TEXTURE_TYPES:; + } + + return box->x >= 0 && + box->x + box->width <= width && + box->y >= 0 && + box->y + box->height <= height && + box->z >= 0 && + box->z + box->depth <= depth; +} + +static unsigned get_sample_count(const struct pipe_resource *res) +{ + return res->nr_samples ? res->nr_samples : 1; +} + +boolean util_try_blit_via_copy_region(struct pipe_context *ctx, + const struct pipe_blit_info *blit) +{ + unsigned mask = get_format_mask(blit->dst.format); + + /* No format conversions. */ + if (blit->src.resource->format != blit->src.format || + blit->dst.resource->format != blit->dst.format || + !util_is_format_compatible( + util_format_description(blit->src.resource->format), + util_format_description(blit->dst.resource->format))) { + return FALSE; + } + + /* No masks, no filtering, no scissor. */ + if ((blit->mask & mask) != mask || + blit->filter != PIPE_TEX_FILTER_NEAREST || + blit->scissor_enable) { + return FALSE; + } + + /* No flipping. */ + if (blit->src.box.width < 0 || + blit->src.box.height < 0 || + blit->src.box.depth < 0) { + return FALSE; + } + + /* No scaling. */ + if (blit->src.box.width != blit->dst.box.width || + blit->src.box.height != blit->dst.box.height || + blit->src.box.depth != blit->dst.box.depth) { + return FALSE; + } + + /* No out-of-bounds access. */ + if (!is_box_inside_resource(blit->src.resource, &blit->src.box, + blit->src.level) || + !is_box_inside_resource(blit->dst.resource, &blit->dst.box, + blit->dst.level)) { + return FALSE; + } + + /* Sample counts must match. */ + if (get_sample_count(blit->src.resource) != + get_sample_count(blit->dst.resource)) { + return FALSE; + } + + ctx->resource_copy_region(ctx, blit->dst.resource, blit->dst.level, + blit->dst.box.x, blit->dst.box.y, blit->dst.box.z, + blit->src.resource, blit->src.level, + &blit->src.box); + return TRUE; +} diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h index 026e88b5154..40636c61619 100644 --- a/src/gallium/auxiliary/util/u_blitter.h +++ b/src/gallium/auxiliary/util/u_blitter.h @@ -142,6 +142,18 @@ void util_blitter_draw_rectangle(struct blitter_context *blitter, enum blitter_attrib_type type, const union pipe_color_union *attrib); +/** + * Try to do a blit using resource_copy_region. The function calls + * resource_copy_region if the blit description is compatible with it. + * + * It returns TRUE if the blit was done using resource_copy_region. + * + * It returns FALSE otherwise and the caller must fall back to a more generic + * codepath for the blit operation. (e.g. by using u_blitter) + */ +boolean util_try_blit_via_copy_region(struct pipe_context *ctx, + const struct pipe_blit_info *blit); + /* * These states must be saved before any of the following functions are called: * - vertex buffers |