[Mesa-dev] [PATCH 12/15] i965: abort linking if URB read length greater than 15

[Antia Puentes]

From: "Juan A. Suarez Romero" <jasuarez at igalia.com>

In scalar mode, URB read length limit is 15. Abort if we go beyond it.
---
 src/mesa/drivers/dri/i965/brw_vec4.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index 9816f0d..04287fb 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -2148,6 +2148,14 @@ brw_compile_vs(const struct brw_compiler *compiler, void *log_data,
       prog_data->base.urb_read_length =
          DIV_ROUND_UP(MAX2(nr_attribute_slots, 1), 2);
 
+   if (is_scalar && prog_data->base.urb_read_length > 15) {
+      if (error_str)
+         *error_str = ralloc_strdup(mem_ctx,
+                                    "Too many attributes. Try to reduce the "
+                                    "number of attributes or their size");
+      return NULL;
+   }
+
    prog_data->nr_attributes = nr_attributes;
    prog_data->nr_attribute_slots = nr_attribute_slots;
 
-- 
2.5.0