etnaviv: add cleared surfaces to context flush set when necessary

A RS/BLT clear might only clear the TS buffer, so the cleared resources
need to be added to the context flush set when they aren't explicitly
flushed in order to make the effect of the clear visible in the resource
on context flush.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20012>

src/gallium/drivers/etnaviv/etnaviv_blt.c

@@ -365,8 +365,13 @@ etna_clear_blt(struct pipe_context *pctx, unsigned buffers, const struct pipe_sc
 
    if (buffers & PIPE_CLEAR_COLOR) {
       for (int idx = 0; idx < ctx->framebuffer_s.nr_cbufs; ++idx) {
+         struct etna_surface *surf = etna_surface(ctx->framebuffer_s.cbufs[idx]);
+
          etna_blit_clear_color_blt(pctx, ctx->framebuffer_s.cbufs[idx],
                                &color[idx]);
+
+         if (!etna_resource(surf->prsc)->explicit_flush)
+            etna_context_add_flush_resource(ctx, surf->prsc);
       }
    }
 

src/gallium/drivers/etnaviv/etnaviv_rs.c

@@ -461,8 +461,13 @@ etna_clear_rs(struct pipe_context *pctx, unsigned buffers, const struct pipe_sci
     */
    if (buffers & PIPE_CLEAR_COLOR) {
       for (int idx = 0; idx < ctx->framebuffer_s.nr_cbufs; ++idx) {
+         struct etna_surface *surf = etna_surface(ctx->framebuffer_s.cbufs[idx]);
+
          etna_blit_clear_color_rs(pctx, ctx->framebuffer_s.cbufs[idx],
                                &color[idx]);
+
+         if (!etna_resource(surf->prsc)->explicit_flush)
+            etna_context_add_flush_resource(ctx, surf->prsc);
       }
    }