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gallium: add sufficient draw interface to allow new indirect features 

This makes it possible to support indirect multidraws as well as having
the number of such draws to come from a separate GPU resource.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Ilia Mirkin 2015-12-31 13:07:49 -05:00
parent 60d0cfd429
commit 3e11656694
1 changed files with 10 additions and 1 deletions
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11
src/gallium/include/pipe/p_state.h
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@ -620,7 +620,7 @@ struct pipe_draw_info
*/
struct pipe_stream_output_target *count_from_stream_output;
/* Indirect parameters resource: If not NULL, most values are taken
/* Indirect draw parameters resource: If not NULL, most values are taken
* from this buffer instead, which is laid out as follows:
*
* if indexed is TRUE:
@ -641,6 +641,15 @@ struct pipe_draw_info
*/
struct pipe_resource *indirect;
unsigned indirect_offset; /**< must be 4 byte aligned */
unsigned indirect_stride; /**< must be 4 byte aligned */
unsigned indirect_count; /**< number of indirect draws */
/* Indirect draw count resource: If not NULL, contains a 32-bit value which
* is to be used as the real indirect_count. In that case indirect_count
* becomes the maximum possible value.
*/
struct pipe_resource *indirect_params;
unsigned indirect_params_offset; /**< must be 4 byte aligned */
};