Mesa (master): i965/vs: Fix GPU hangs in shaders with large virtual GRFs pre-gen6.
Eric Anholt
anholt at kemper.freedesktop.org
Wed Sep 7 01:02:40 UTC 2011
Module: Mesa
Branch: master
Commit: 8adcad213ef6cbbaa9adf1485827125cc05aa033
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=8adcad213ef6cbbaa9adf1485827125cc05aa033
Author: Eric Anholt <eric at anholt.net>
Date: Tue Aug 30 15:50:17 2011 -0700
i965/vs: Fix GPU hangs in shaders with large virtual GRFs pre-gen6.
If you get your total GRF count wrong, you write over some other
shader's g0, and the GPU fails shortly thereafter.
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
---
.../drivers/dri/i965/brw_vec4_reg_allocate.cpp | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp b/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
index 72e0c07..9fd4922 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
@@ -216,7 +216,8 @@ vec4_visitor::reg_allocate()
int reg = ra_get_node_reg(g, i);
hw_reg_mapping[i] = first_assigned_grf + brw->vs.ra_reg_to_grf[reg];
- prog_data->total_grf = MAX2(prog_data->total_grf, hw_reg_mapping[i] + 1);
+ prog_data->total_grf = MAX2(prog_data->total_grf,
+ hw_reg_mapping[i] + virtual_grf_sizes[i]);
}
foreach_list(node, &this->instructions) {
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