On Die, 2013-03-26 at 14:51 +0100, Christian König wrote:
> From: Christian König <christian.koe...@amd.com>
>
> Signed-off-by: Christian König <christian.koe...@amd.com>
> [...]
> diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.h
> b/src/gallium/drivers/radeonsi/radeonsi_shader.h
> index 9dae742..e09f297 100644
> --- a/src/gallium/drivers/radeonsi/radeonsi_shader.h
> +++ b/src/gallium/drivers/radeonsi/radeonsi_shader.h
> @@ -111,13 +111,18 @@ struct si_shader {
> unsigned nr_cbufs;
> };
>
> -struct si_shader_key {
> - unsigned export_16bpc:8;
> - unsigned nr_cbufs:4;
> - unsigned color_two_side:1;
> - unsigned alpha_func:3;
> - unsigned flatshade:1;
> - float alpha_ref;
> +union si_shader_key {
> + struct {
> + unsigned export_16bpc:8;
> + unsigned nr_cbufs:4;
> + unsigned color_two_side:1;
> + unsigned alpha_func:3;
> + unsigned flatshade:1;
> + float alpha_ref;
> + } ps;
> + struct {
> + unsigned instance_divisors[PIPE_MAX_ATTRIBS];
> + } vs;
> };
This grows the shader key from 8 to 128 bytes. I don't suppose the
instance divisors could be encoded in a more compact way? E.g. loading
the divisor values from constants and only tracking which elements use a
divisor in a bitmask in the key.
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Debian, X and DRI developer
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