nvc0/ir: fix lowering of textureGrad

1 files changed, 4 insertions, 4 deletions

diff --git a/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp b/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp
index 77edaa6067a..726331e91e7 100644
--- a/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp
+++ b/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp
@@ -1819,8 +1819,8 @@ RegAlloc::InsertConstraintsPass::texConstraintNVE0(TexInstruction *tex)
    int n = tex->srcCount(0xff, true);
    if (n > 4) {
       condenseSrcs(tex, 0, 3);
-      if (n > 5)
-         condenseSrcs(tex, 4, n - 1);
+      if (n > 5) // NOTE: first call modified positions already
+         condenseSrcs(tex, 4 - (4 - 1), n - 1 - (4 - 1));
    } else
    if (n > 1) {
       condenseSrcs(tex, 0, n - 1);
@@ -1850,8 +1850,8 @@ RegAlloc::InsertConstraintsPass::texConstraintNVC0(TexInstruction *tex)
 
    if (s > 1)
       condenseSrcs(tex, 0, s - 1);
-   if (n > 1)
-      condenseSrcs(tex, s, s + (n - 1));
+   if (n > 1) // NOTE: first call modified positions already
+      condenseSrcs(tex, 1, n);
 
    condenseDefs(tex);
 }