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gallium: Add MULTISAMPLE_Z_RESOLVE cap

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Resolving a multisampled depth texture into
a single sampled texture is supported on >= SM4.1
hw. It is possible some previous hw support it.

The ability was tested on radeonsi and nvc0.
Apparently is is also supported for radeon >= r700.

This patch adds the MULTISAMPLE_Z_RESOLVE cap and
add it to the drivers. It is advertised for drivers
for which it is sure the ability is supported.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Axel Davy <axel.davy@ens.fr>
This commit is contained in:
Axel Davy
2015-01-17 14:30:17 +01:00
parent 77cc799853
commit eb1c12d20d
15 changed files with 20 additions and 0 deletions
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1
src/gallium/drivers/ilo/ilo_screen.c
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@@ -470,6 +470,7 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param)
case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
case PIPE_CAP_SAMPLER_VIEW_TARGET:
case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
return 0;
case PIPE_CAP_VENDOR_ID: