[Mesa-dev] [PATCH 02/21] i965/fs: Fix offset() for registers with zero stride.

[Francisco Jerez]

stride == 0 implies that the register has one channel per vector
component.
---
 src/mesa/drivers/dri/i965/brw_ir_fs.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_ir_fs.h b/src/mesa/drivers/dri/i965/brw_ir_fs.h
index 68a2818..e2d2617 100644
--- a/src/mesa/drivers/dri/i965/brw_ir_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_ir_fs.h
@@ -139,14 +139,15 @@ horiz_offset(fs_reg reg, unsigned delta)
 static inline fs_reg
 offset(fs_reg reg, unsigned delta)
 {
-   assert(reg.stride > 0);
    switch (reg.file) {
    case BAD_FILE:
       break;
    case GRF:
    case MRF:
    case ATTR:
-      return byte_offset(reg, delta * reg.width * reg.stride * type_sz(reg.type));
+      return byte_offset(reg,
+                         delta * MAX2(reg.width * reg.stride, 1) *
+                         type_sz(reg.type));
    case UNIFORM:
       reg.reg_offset += delta;
       break;
-- 
2.3.5