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.st...@pengutronix.de>
---
src/gallium/drivers/etnaviv/etnaviv_blend.c | 4 ++--
src/gallium/drivers/etnaviv/etnaviv_state.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/gallium/drivers/etnaviv/etnaviv_blend.c
b/src/gallium/drivers/etnaviv/etnaviv_blend.c
index 1b432bd68715..9c23411d4ff7 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_blend.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_blend.c
@@ -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);
diff --git a/src/gallium/drivers/etnaviv/etnaviv_state.c
b/src/gallium/drivers/etnaviv/etnaviv_state.c
index fb033507f387..8b044b3ee8d3 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_state.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_state.c
@@ -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;
--
2.11.0
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