From 60f044df566569d00106a7bce28110aaca9fa534 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Thu, 20 Dec 2018 22:58:33 -0300 Subject: shader_ir: Add half float helpers --- src/video_core/shader/shader_ir.cpp | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'src/video_core/shader/shader_ir.cpp') diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp index e4b81040d..5951bdc7b 100644 --- a/src/video_core/shader/shader_ir.cpp +++ b/src/video_core/shader/shader_ir.cpp @@ -175,6 +175,43 @@ Node ShaderIR::GetOperandAbsNegInteger(Node value, bool absolute, bool negate, b return value; } +Node ShaderIR::UnpackHalfImmediate(Instruction instr, bool has_negation) { + const Node value = Immediate(instr.half_imm.PackImmediates()); + if (!has_negation) { + return value; + } + const Node first_negate = GetPredicate(instr.half_imm.first_negate != 0); + const Node second_negate = GetPredicate(instr.half_imm.second_negate != 0); + + return Operation(OperationCode::HNegate, HALF_NO_PRECISE, value, first_negate, second_negate); +} + +Node ShaderIR::HalfMerge(Node dest, Node src, Tegra::Shader::HalfMerge merge) { + switch (merge) { + case Tegra::Shader::HalfMerge::H0_H1: + return src; + case Tegra::Shader::HalfMerge::F32: + return Operation(OperationCode::HMergeF32, src); + case Tegra::Shader::HalfMerge::Mrg_H0: + return Operation(OperationCode::HMergeH0, dest, src); + case Tegra::Shader::HalfMerge::Mrg_H1: + return Operation(OperationCode::HMergeH1, dest, src); + } + UNREACHABLE(); + return src; +} + +Node ShaderIR::GetOperandAbsNegHalf(Node value, bool absolute, bool negate) { + if (absolute) { + value = Operation(OperationCode::HAbsolute, HALF_NO_PRECISE, value); + } + if (negate) { + value = Operation(OperationCode::HNegate, HALF_NO_PRECISE, value, GetPredicate(true), + GetPredicate(true)); + } + return value; +} + void ShaderIR::SetRegister(BasicBlock& bb, Register dest, Node src) { bb.push_back(Operation(OperationCode::Assign, GetRegister(dest), src)); } -- cgit v1.2.3