panfrost: Extract panfrost_batch_skip_rasterization

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14154>

src/gallium/drivers/panfrost/pan_cmdstream.c

@@ -2325,7 +2325,7 @@ panfrost_emit_vertex_tiler_jobs(struct panfrost_batch *batch,
                                            batch->indirect_draw_job_id : 0,
                                            0, vertex_job, false);
 
-        if (ctx->rasterizer->base.rasterizer_discard || batch->scissor_culls_everything)
+        if (panfrost_batch_skip_rasterization(batch))
                 return;
 
         panfrost_add_job(&batch->pool.base, &batch->scoreboard,

src/gallium/drivers/panfrost/pan_job.c

@@ -901,3 +901,17 @@ panfrost_batch_union_scissor(struct panfrost_batch *batch,
         batch->maxx = MAX2(batch->maxx, maxx);
         batch->maxy = MAX2(batch->maxy, maxy);
 }
+
+/**
+ * Checks if rasterization should be skipped. If not, a TILER job must be
+ * created for each draw, or the IDVS flow must be used.
+ */
+bool
+panfrost_batch_skip_rasterization(struct panfrost_batch *batch)
+{
+        struct panfrost_context *ctx = batch->ctx;
+        struct pipe_rasterizer_state *rast = (void *) ctx->rasterizer;
+
+        return (rast->rasterizer_discard ||
+                batch->scissor_culls_everything);
+}

src/gallium/drivers/panfrost/pan_job.h

@@ -195,4 +195,7 @@ panfrost_batch_union_scissor(struct panfrost_batch *batch,
                              unsigned minx, unsigned miny,
                              unsigned maxx, unsigned maxy);
 
+bool
+panfrost_batch_skip_rasterization(struct panfrost_batch *batch);
+
 #endif