From: Marek Olšák <marek.ol...@amd.com> Sadly, I haven't been able to find any other way to fix the bug for radeonsi. The game seems to expect DX9 behavior.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94627 (against nouveau) --- .../drivers/radeon/radeon_setup_tgsi_llvm.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c index 74b36ec..c84c850 100644 --- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c +++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c @@ -1522,6 +1522,25 @@ static void emit_up2h(const struct lp_build_tgsi_action *action, } } +static void emit_sqrt(const struct lp_build_tgsi_action *action, + struct lp_build_tgsi_context * bld_base, + struct lp_build_emit_data * emit_data) +{ + LLVMBuilderRef builder = bld_base->base.gallivm->builder; + LLVMValueRef arg = emit_data->args[0]; + + /* The game "Risen" renders correctly only if RSQ + RCP is used to + * implement SQRT. + */ + arg = lp_build_intrinsic(builder, "llvm.AMDGPU.rsq.f32", + emit_data->dst_type, &arg, 1, + LLVMReadNoneAttribute); + + arg = LLVMBuildFDiv(builder, bld_base->base.one, arg, ""); + emit_data->output[emit_data->chan] = arg; + return; +} + void radeon_llvm_context_init(struct radeon_llvm_context * ctx, const char *triple) { struct lp_type type; @@ -1671,8 +1690,7 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx, const char *trip bld_base->op_actions[TGSI_OPCODE_SGT].emit = emit_set_cond; bld_base->op_actions[TGSI_OPCODE_SIN].emit = build_tgsi_intrinsic_nomem; bld_base->op_actions[TGSI_OPCODE_SIN].intr_name = "llvm.sin.f32"; - bld_base->op_actions[TGSI_OPCODE_SQRT].emit = build_tgsi_intrinsic_nomem; - bld_base->op_actions[TGSI_OPCODE_SQRT].intr_name = "llvm.sqrt.f32"; + bld_base->op_actions[TGSI_OPCODE_SQRT].emit = emit_sqrt; bld_base->op_actions[TGSI_OPCODE_SSG].emit = emit_ssg; bld_base->op_actions[TGSI_OPCODE_TRUNC].emit = build_tgsi_intrinsic_nomem; bld_base->op_actions[TGSI_OPCODE_TRUNC].intr_name = "llvm.trunc.f32"; -- 2.7.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
