glsl: Add an option to clamp block indices when lowering UBO/SSBOs

This prevents array overflow when the block is actually an array of UBOs or
SSBOs.  On some hardware such as i965, such overflows can cause GPU hangs.

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_compiler.c b/src/mesa/drivers/dri/i965/brw_compiler.c
index 82131db9a8f..3f175892286 100644
--- a/src/mesa/drivers/dri/i965/brw_compiler.c
+++ b/src/mesa/drivers/dri/i965/brw_compiler.c
@@ -188,6 +188,7 @@ brw_compiler_create(void *mem_ctx, const struct brw_device_info *devinfo)
       }
 
       compiler->glsl_compiler_options[i].LowerBufferInterfaceBlocks = true;
+      compiler->glsl_compiler_options[i].ClampBlockIndicesToArrayBounds = true;
    }
 
    compiler->glsl_compiler_options[MESA_SHADER_TESS_CTRL].EmitNoIndirectInput = false;