From 72cd7e87d35e96fad9643f1cee706a8568fa3fa1 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Sat, 19 Feb 2011 01:03:08 -0800 Subject: [PATCH] i965/fs: Apply source modifier workarounds to POW as well. Single-operand math already had these workarounds, but POW (the only two operand function) did not. It needs them too - otherwise we can hit assertion failures in brw_eu_emit.c when code is actually generated. NOTE: This is a candidate for the 7.10 branch. Reviewed-by: Eric Anholt --- src/mesa/drivers/dri/i965/brw_fs.cpp | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 8fd120c..66bbdbe 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -661,14 +661,18 @@ fs_visitor::emit_math(fs_opcodes opcode, fs_reg dst, fs_reg src0, fs_reg src1) assert(opcode == FS_OPCODE_POW); if (intel->gen >= 6) { - /* Can't do hstride == 0 args to gen6 math, so expand it out. */ - if (src0.file == UNIFORM) { + /* Can't do hstride == 0 args to gen6 math, so expand it out. + * + * The hardware ignores source modifiers (negate and abs) on math + * instructions, so we also move to a temp to set those up. + */ + if (src0.file == UNIFORM || src0.abs || src0.negate) { fs_reg expanded = fs_reg(this, glsl_type::float_type); emit(fs_inst(BRW_OPCODE_MOV, expanded, src0)); src0 = expanded; } - if (src1.file == UNIFORM) { + if (src1.file == UNIFORM || src1.abs || src1.negate) { fs_reg expanded = fs_reg(this, glsl_type::float_type); emit(fs_inst(BRW_OPCODE_MOV, expanded, src1)); src1 = expanded; -- 2.7.4