panfrost: Stop using the scoreboard to check the presence of draws/compute

Now that we count draws and compute jobs, we can change some of the
tests to be HW-agnostic, so they can be re-used when we introduce
support for CSF hardware.

Anything that's related to job submission keeps using the scoreboard
information, because this code will stay JM-specific.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26249>

src/gallium/drivers/panfrost/pan_cmdstream.c

@@ -4580,7 +4580,7 @@ batch_get_polygon_list(struct panfrost_batch *batch)
    struct panfrost_device *dev = pan_device(batch->ctx->base.screen);
 
    if (!batch->tiler_ctx.midgard.polygon_list) {
-      bool has_draws = batch->scoreboard.first_tiler != NULL;
+      bool has_draws = batch->draw_count > 0;
       unsigned size = panfrost_tiler_get_polygon_list_size(
          dev, batch->key.width, batch->key.height,
          batch->tiler_ctx.vertex_count);

src/gallium/drivers/panfrost/pan_context.c

@@ -70,7 +70,7 @@ panfrost_clear(struct pipe_context *pipe, unsigned buffers,
    struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx);
 
    /* At the start of the batch, we can clear for free */
-   if (!batch->scoreboard.first_job) {
+   if (batch->draw_count == 0) {
       panfrost_batch_clear(batch, buffers, color, depth, stencil);
       return;
    }

src/gallium/drivers/panfrost/pan_job.c

@@ -229,7 +229,7 @@ panfrost_get_fresh_batch_for_fbo(struct panfrost_context *ctx,
    /* We only need to submit and get a fresh batch if there is no
     * draw/clear queued. Otherwise we may reuse the batch. */
 
-   if (batch->scoreboard.first_job) {
+   if (batch->draw_count + batch->compute_count > 0) {
       perf_debug_ctx(ctx, "Flushing the current FBO due to: %s", reason);
       panfrost_batch_submit(ctx, batch);
       batch = panfrost_get_batch(ctx, &ctx->pipe_framebuffer);
@@ -777,14 +777,13 @@ panfrost_batch_submit(struct panfrost_context *ctx,
 {
    struct pipe_screen *pscreen = ctx->base.screen;
    struct panfrost_screen *screen = pan_screen(pscreen);
+   bool has_frag = panfrost_has_fragment_job(batch);
    int ret;
 
    /* Nothing to do! */
-   if (!batch->scoreboard.first_job && !batch->clear)
+   if (!has_frag && batch->compute_count == 0)
       goto out;
 
-   bool has_frag = panfrost_has_fragment_job(batch);
-
    if (batch->key.zsbuf && has_frag) {
       struct pipe_surface *surf = batch->key.zsbuf;
       struct panfrost_resource *z_rsrc = pan_resource(surf->texture);

src/gallium/drivers/panfrost/pan_job.h

@@ -267,7 +267,7 @@ bool panfrost_batch_skip_rasterization(struct panfrost_batch *batch);
 static inline bool
 panfrost_has_fragment_job(struct panfrost_batch *batch)
 {
-   return batch->scoreboard.first_tiler || batch->clear;
+   return batch->draw_count > 0 || batch->clear;
 }
 
 #endif