hk: add notess perftest

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31532>

src/asahi/lib/agx_device.c

@@ -45,6 +45,7 @@ asahi_simple_ioctl(struct agx_device *dev, unsigned cmd, void *req)
 /* clang-format off */
 static const struct debug_named_value agx_debug_options[] = {
    {"trace",     AGX_DBG_TRACE,    "Trace the command stream"},
+   {"notess",    AGX_DBG_NOTESS,   "Skip draws with tessellation"},
    {"no16",      AGX_DBG_NO16,     "Disable 16-bit support"},
    {"perf",      AGX_DBG_PERF,     "Print performance warnings"},
 #ifndef NDEBUG

src/asahi/lib/agx_device.h

@@ -28,7 +28,7 @@ static const uint64_t AGX_SUPPORTED_INCOMPAT_FEATURES =
 
 enum agx_dbg {
    AGX_DBG_TRACE = BITFIELD_BIT(0),
-   /* bit 1 unused */
+   AGX_DBG_NOTESS = BITFIELD_BIT(1),
    AGX_DBG_NO16 = BITFIELD_BIT(2),
    AGX_DBG_DIRTY = BITFIELD_BIT(3),
    AGX_DBG_PRECOMPILE = BITFIELD_BIT(4),

src/asahi/vulkan/hk_cmd_draw.c

@@ -3359,6 +3359,11 @@ hk_draw(struct hk_cmd_buffer *cmd, uint16_t draw_id, struct hk_draw draw_)
       }
 
       if (tess) {
+         struct hk_device *dev = hk_cmd_buffer_device(cmd);
+         if (unlikely(dev->dev.debug & AGX_DBG_NOTESS)) {
+            continue;
+         }
+
          draw = hk_launch_tess(cmd, ccs, draw);
 
          if (draw.raw) {