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etnaviv: enable full overwrite when no color buffer is present 

The OVERWRITE bit disables destination fetches, which is exactly what
we want when there is no valid color buffer bound.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Wladimir J. van der Laan <laanwj@gmail.com>
This commit is contained in:
Lucas Stach 2017-11-15 17:33:17 +01:00 committed by Lucas Stach
parent 1eab327ba7
commit f5d477f447
2 changed files with 3 additions and 3 deletions
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4
src/gallium/drivers/etnaviv/etnaviv_blend.c
View File

@ -131,8 +131,8 @@ etna_update_blend(struct etna_context *ctx)
* - The color mask is 1111
* - No blending is used
*/
bool full_overwrite = (rt0->colormask == 0xf) &&
blend->fo_allowed;
bool full_overwrite = ((rt0->colormask == 0xf) && blend->fo_allowed) ||
!pfb->cbufs[0];
blend->PE_COLOR_FORMAT =
VIVS_PE_COLOR_FORMAT_COMPONENTS(colormask) |
COND(full_overwrite, VIVS_PE_COLOR_FORMAT_OVERWRITE);

2
src/gallium/drivers/etnaviv/etnaviv_state.c
View File

@ -185,7 +185,7 @@ etna_set_framebuffer_state(struct pipe_context *pctx,
/* Clearing VIVS_PE_COLOR_FORMAT_COMPONENTS__MASK and
* VIVS_PE_COLOR_FORMAT_OVERWRITE prevents us from overwriting the
* color target */
cs->PE_COLOR_FORMAT = 0;
cs->PE_COLOR_FORMAT = VIVS_PE_COLOR_FORMAT_OVERWRITE;
cs->PE_COLOR_STRIDE = 0;
cs->TS_COLOR_STATUS_BASE.bo = NULL;
cs->TS_COLOR_SURFACE_BASE.bo = NULL;