On Fri, Oct 16, 2015 at 6:52 PM, Glenn Kennard <glenn.kenn...@gmail.com> wrote:
> Supported on R700 and up.
>
> Signed-off-by: Glenn Kennard <glenn.kenn...@gmail.com>
> ---
> Not exactly a commonly used extension, but might as well set the
> hardware registers rather than just dropping the hint on the floor.
>
> src/gallium/drivers/r600/evergreen_state.c | 13 +++++++++++++
> src/gallium/drivers/r600/evergreend.h | 7 +++++++
> src/gallium/drivers/r600/r600_shader.c | 1 +
> src/gallium/drivers/r600/r600_shader.h | 2 ++
> src/gallium/drivers/r600/r600_state.c | 15 +++++++++++++++
> src/gallium/drivers/r600/r600d.h | 8 ++++++++
> 6 files changed, 46 insertions(+)
>
> diff --git a/src/gallium/drivers/r600/evergreen_state.c
> b/src/gallium/drivers/r600/evergreen_state.c
> index c6702a9..96c6b11 100644
> --- a/src/gallium/drivers/r600/evergreen_state.c
> +++ b/src/gallium/drivers/r600/evergreen_state.c
> @@ -2940,6 +2940,19 @@ void evergreen_update_ps_state(struct pipe_context
> *ctx, struct r600_pipe_shader
> db_shader_control |= S_02880C_STENCIL_EXPORT_ENABLE(stencil_export);
> db_shader_control |= S_02880C_MASK_EXPORT_ENABLE(mask_export);
>
> + switch (rshader->ps_conservative_z) {
> + default: /* fall through */
> + case TGSI_FS_DEPTH_LAYOUT_ANY:
> + db_shader_control |=
> S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_ANY_Z);
> + break;
> + case TGSI_FS_DEPTH_LAYOUT_GREATER:
> + db_shader_control |=
> S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_GREATER_THAN_Z);
> + break;
> + case TGSI_FS_DEPTH_LAYOUT_LESS:
> + db_shader_control |=
> S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_LESS_THAN_Z);
> + break;
> + }
> +
> exports_ps = 0;
> for (i = 0; i < rshader->noutput; i++) {
> if (rshader->output[i].name == TGSI_SEMANTIC_POSITION ||
> diff --git a/src/gallium/drivers/r600/evergreend.h
> b/src/gallium/drivers/r600/evergreend.h
> index 937ffcb..a9a65f7 100644
> --- a/src/gallium/drivers/r600/evergreend.h
> +++ b/src/gallium/drivers/r600/evergreend.h
> @@ -815,6 +815,13 @@
> #define V_02880C_EXPORT_DB_FOUR16 0x01
> #define V_02880C_EXPORT_DB_TWO 0x02
> #define S_02880C_ALPHA_TO_MASK_DISABLE(x) (((x) & 0x1) << 12)
> +#define S_02880C_CONSERVATIVE_Z_EXPORT(x) (((x) & 0x03) << 16)
> +#define G_02880C_CONSERVATIVE_Z_EXPORT(x) (((x) >> 16) & 0x03)
> +#define C_02880C_CONSERVATIVE_Z_EXPORT 0xFFFCFFFF
> +#define V_02880C_EXPORT_ANY_Z 0
> +#define V_02880C_EXPORT_LESS_THAN_Z 1
> +#define V_02880C_EXPORT_GREATER_THAN_Z 2
> +#define V_02880C_EXPORT_RESERVED 3
>
> #define R_028A00_PA_SU_POINT_SIZE 0x028A00
> #define S_028A00_HEIGHT(x) (((x) & 0xFFFF) << 0)
> diff --git a/src/gallium/drivers/r600/r600_shader.c
> b/src/gallium/drivers/r600/r600_shader.c
> index 8efe902..560696d 100644
> --- a/src/gallium/drivers/r600/r600_shader.c
> +++ b/src/gallium/drivers/r600/r600_shader.c
> @@ -2048,6 +2048,7 @@ static int r600_shader_from_tgsi(struct r600_context
> *rctx,
>
> shader->fs_write_all =
> ctx.info.properties[TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS];
> shader->vs_position_window_space =
> ctx.info.properties[TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION];
> + shader->ps_conservative_z =
> ctx.info.properties[TGSI_PROPERTY_FS_DEPTH_LAYOUT];
>
> if (shader->vs_as_gs_a)
> vs_add_primid_output(&ctx, key.vs.prim_id_out);
> diff --git a/src/gallium/drivers/r600/r600_shader.h
> b/src/gallium/drivers/r600/r600_shader.h
> index c240e71..e085263 100644
> --- a/src/gallium/drivers/r600/r600_shader.h
> +++ b/src/gallium/drivers/r600/r600_shader.h
> @@ -76,6 +76,8 @@ struct r600_shader {
> boolean uses_tex_buffers;
> boolean gs_prim_id_input;
>
> + unsigned ps_conservative_z;
> +
> /* Size in bytes of a data item in the ring(s) (single vertex data).
> Stages with only one ring items 123 will be set to 0. */
> unsigned ring_item_sizes[4];
> diff --git a/src/gallium/drivers/r600/r600_state.c
> b/src/gallium/drivers/r600/r600_state.c
> index 1be3e1b..09b2325 100644
> --- a/src/gallium/drivers/r600/r600_state.c
> +++ b/src/gallium/drivers/r600/r600_state.c
> @@ -2533,6 +2533,21 @@ void r600_update_ps_state(struct pipe_context *ctx,
> struct r600_pipe_shader *sha
> if (rshader->uses_kill)
> db_shader_control |= S_02880C_KILL_ENABLE(1);
>
> + if (rctx->b.chip_class >= R700) {
> + switch (rshader->ps_conservative_z) {
> + default: /* fall through */
> + case TGSI_FS_DEPTH_LAYOUT_ANY:
> + db_shader_control |=
> S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_ANY_Z);
> + break;
> + case TGSI_FS_DEPTH_LAYOUT_GREATER:
> + db_shader_control |=
> S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_GREATER_THAN_Z);
> + break;
> + case TGSI_FS_DEPTH_LAYOUT_LESS:
> + db_shader_control |=
> S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_LESS_THAN_Z);
> + break;
> + }
> + }
> +
> exports_ps = 0;
> for (i = 0; i < rshader->noutput; i++) {
> if (rshader->output[i].name == TGSI_SEMANTIC_POSITION ||
> diff --git a/src/gallium/drivers/r600/r600d.h
> b/src/gallium/drivers/r600/r600d.h
> index 6bba88c..06c4356 100644
> --- a/src/gallium/drivers/r600/r600d.h
> +++ b/src/gallium/drivers/r600/r600d.h
> @@ -853,6 +853,14 @@
> #define S_02880C_DUAL_EXPORT_ENABLE(x) (((x) & 0x1) << 9)
> #define G_02880C_DUAL_EXPORT_ENABLE(x) (((x) >> 9) & 0x1)
> #define C_02880C_DUAL_EXPORT_ENABLE 0xFFFFFDFF
> +#define S_02880C_CONSERVATIVE_Z_EXPORT(x) (((x) & 0x03) << 13)
> +#define G_02880C_CONSERVATIVE_Z_EXPORT(x) (((x) >> 13) & 0x03)
> +#define C_02880C_CONSERVATIVE_Z_EXPORT 0xFFFF9FFF
> +#define V_02880C_EXPORT_ANY_Z 0
> +#define V_02880C_EXPORT_LESS_THAN_Z 1
> +#define V_02880C_EXPORT_GREATER_THAN_Z 2
> +#define V_02880C_EXPORT_RESERVED 3
> +
Wrong register. CONSERVATIVE_Z_EXPORT is bits 14:13 of
DB_RENDER_CONTROL (0x28d0c) on 7xx.
Alex
> #define R_028DF8_PA_SU_POLY_OFFSET_DB_FMT_CNTL 0x028DF8
> #define S_028DF8_POLY_OFFSET_NEG_NUM_DB_BITS(x) (((x) & 0xFF) << 0)
> #define G_028DF8_POLY_OFFSET_NEG_NUM_DB_BITS(x) (((x) >> 0) & 0xFF)
> --
> 1.9.1
>
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