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asahi: Skip draws if the scissor culls everything

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We can't pack the scissor descriptor for these, and there would be no rendering
anyway, so detect this condition and skip the draw.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11084>
This commit is contained in:
Alyssa Rosenzweig 2021-05-31 01:28:25 +05:30 • committed by Marge Bot
parent 861109e441
commit 6d9242e109
1 changed files with 12 additions and 0 deletions
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12
src/gallium/drivers/asahi/agx_state.c
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@ -1190,6 +1190,15 @@ agx_index_buffer_ptr(struct agx_batch *batch,
}
}
static bool
agx_scissor_culls_everything(struct agx_context *ctx)
{
const struct pipe_scissor_state ss = ctx->scissor;
return ctx->rast->base.scissor &&
((ss.minx == ss.maxx) || (ss.miny == ss.maxy));
}
static void
agx_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info,
unsigned drawid_offset,
@ -1210,6 +1219,9 @@ agx_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info,
struct agx_context *ctx = agx_context(pctx);
struct agx_batch *batch = ctx->batch;
if (agx_scissor_culls_everything(ctx))
return;
/* TODO: masks */
ctx->batch->draw |= ~0;