diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index fbd2464357d..feb0cc156cb 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -677,6 +677,15 @@ fs_visitor::emit_general_interpolation(ir_variable *ir) int location = ir->location; for (unsigned int i = 0; i < array_elements; i++) { for (unsigned int j = 0; j < type->matrix_columns; j++) { + if (!(fp->Base.InputsRead & BITFIELD64_BIT(location))) { + /* If there's no incoming setup data for this slot, don't + * emit interpolation for it (since it's not used, and + * we'd fall over later trying to find the setup data. + */ + attr.reg_offset += type->vector_elements; + continue; + } + for (unsigned int c = 0; c < type->vector_elements; c++) { struct brw_reg interp = interp_reg(location, c); emit(fs_inst(FS_OPCODE_LINTERP, |