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r600g: use SIMPLE_FLOAT for blending to enable some optimizations 

Radeonsi also sets this flag. Seems to avoid pulling up the desintation
RT value when the dst blend factor is zero if it's not otherwise being
loaded. Among other things, it allows blending to overwrite infinity/NaN
values in the destination RT.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Ilia Mirkin 2017-11-04 13:49:45 -04:00
parent 35433494f3
commit f317f72f73
2 changed files with 2 additions and 0 deletions
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1
src/gallium/drivers/r600/evergreen_state.c
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@ -1211,6 +1211,7 @@ static void evergreen_set_color_surface_common(struct r600_context *rctx,
S_028C70_COMP_SWAP(swap) |
S_028C70_BLEND_CLAMP(blend_clamp) |
S_028C70_BLEND_BYPASS(blend_bypass) |
S_028C70_SIMPLE_FLOAT(1) |
S_028C70_NUMBER_TYPE(ntype) |
S_028C70_ENDIAN(endian);

1
src/gallium/drivers/r600/r600_state.c
View File

@ -898,6 +898,7 @@ static void r600_init_color_surface(struct r600_context *rctx,
S_0280A0_COMP_SWAP(swap) |
S_0280A0_BLEND_BYPASS(blend_bypass) |
S_0280A0_BLEND_CLAMP(blend_clamp) |
S_0280A0_SIMPLE_FLOAT(1) |
S_0280A0_NUMBER_TYPE(ntype) |
S_0280A0_ENDIAN(endian);