From 833d0806f92b893220cf43d63c223a7cd9af9022 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Thu, 20 Dec 2018 22:56:08 -0300 Subject: shader_ir: Add float helpers --- src/video_core/shader/shader_ir.cpp | 19 +++++++++++++++++++ src/video_core/shader/shader_ir.h | 5 +++++ 2 files changed, 24 insertions(+) diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp index 48046d967..af95e54ef 100644 --- a/src/video_core/shader/shader_ir.cpp +++ b/src/video_core/shader/shader_ir.cpp @@ -121,6 +121,25 @@ Node ShaderIR::GetLocalMemory(Node address) { return StoreNode(LmemNode(address)); } +Node ShaderIR::GetOperandAbsNegFloat(Node value, bool absolute, bool negate) { + if (absolute) { + value = Operation(OperationCode::FAbsolute, NO_PRECISE, value); + } + if (negate) { + value = Operation(OperationCode::FNegate, NO_PRECISE, value); + } + return value; +} + +Node ShaderIR::GetSaturatedFloat(Node value, bool saturate) { + if (!saturate) { + return value; + } + const Node positive_zero = Immediate(std::copysignf(0, 1)); + const Node positive_one = Immediate(1.0f); + return Operation(OperationCode::FClamp, NO_PRECISE, value, positive_zero, positive_one); +} + void ShaderIR::SetRegister(BasicBlock& bb, Register dest, Node src) { bb.push_back(Operation(OperationCode::Assign, GetRegister(dest), src)); } diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h index 192b18ac7..93455412f 100644 --- a/src/video_core/shader/shader_ir.h +++ b/src/video_core/shader/shader_ir.h @@ -643,6 +643,11 @@ private: /// Sets a local memory address. address and value must be a number-evaluated node void SetLocalMemory(BasicBlock& bb, Node address, Node value); + /// Conditionally absolute/negated float. Absolute is applied first + Node GetOperandAbsNegFloat(Node value, bool absolute, bool negate); + /// Conditionally saturates a float + Node GetSaturatedFloat(Node value, bool saturate = true); + template inline Node Operation(OperationCode code, const T*... operands) { return StoreNode(OperationNode(code, operands...)); -- cgit v1.2.3