From c67d64365a712830fe140dd36e24e2efd9b8a812 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Tue, 16 Feb 2021 20:52:12 -0300
Subject: shader: Remove old shader management

---
 src/video_core/shader/decode/warp.cpp | 117 ----------------------------------
 1 file changed, 117 deletions(-)
 delete mode 100644 src/video_core/shader/decode/warp.cpp

(limited to 'src/video_core/shader/decode/warp.cpp')

diff --git a/src/video_core/shader/decode/warp.cpp b/src/video_core/shader/decode/warp.cpp
deleted file mode 100644
index 37433d783..000000000
--- a/src/video_core/shader/decode/warp.cpp
+++ /dev/null
@@ -1,117 +0,0 @@
-// Copyright 2019 yuzu Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "common/assert.h"
-#include "common/common_types.h"
-#include "video_core/engines/shader_bytecode.h"
-#include "video_core/shader/node_helper.h"
-#include "video_core/shader/shader_ir.h"
-
-namespace VideoCommon::Shader {
-
-using Tegra::Shader::Instruction;
-using Tegra::Shader::OpCode;
-using Tegra::Shader::Pred;
-using Tegra::Shader::ShuffleOperation;
-using Tegra::Shader::VoteOperation;
-
-namespace {
-
-OperationCode GetOperationCode(VoteOperation vote_op) {
-    switch (vote_op) {
-    case VoteOperation::All:
-        return OperationCode::VoteAll;
-    case VoteOperation::Any:
-        return OperationCode::VoteAny;
-    case VoteOperation::Eq:
-        return OperationCode::VoteEqual;
-    default:
-        UNREACHABLE_MSG("Invalid vote operation={}", vote_op);
-        return OperationCode::VoteAll;
-    }
-}
-
-} // Anonymous namespace
-
-u32 ShaderIR::DecodeWarp(NodeBlock& bb, u32 pc) {
-    const Instruction instr = {program_code[pc]};
-    const auto opcode = OpCode::Decode(instr);
-
-    // Signal the backend that this shader uses warp instructions.
-    uses_warps = true;
-
-    switch (opcode->get().GetId()) {
-    case OpCode::Id::VOTE: {
-        const Node value = GetPredicate(instr.vote.value, instr.vote.negate_value != 0);
-        const Node active = Operation(OperationCode::BallotThread, value);
-        const Node vote = Operation(GetOperationCode(instr.vote.operation), value);
-        SetRegister(bb, instr.gpr0, active);
-        SetPredicate(bb, instr.vote.dest_pred, vote);
-        break;
-    }
-    case OpCode::Id::SHFL: {
-        Node mask = instr.shfl.is_mask_imm ? Immediate(static_cast<u32>(instr.shfl.mask_imm))
-                                           : GetRegister(instr.gpr39);
-        Node index = instr.shfl.is_index_imm ? Immediate(static_cast<u32>(instr.shfl.index_imm))
-                                             : GetRegister(instr.gpr20);
-
-        Node thread_id = Operation(OperationCode::ThreadId);
-        Node clamp = Operation(OperationCode::IBitwiseAnd, mask, Immediate(0x1FU));
-        Node seg_mask = BitfieldExtract(mask, 8, 16);
-
-        Node neg_seg_mask = Operation(OperationCode::IBitwiseNot, seg_mask);
-        Node min_thread_id = Operation(OperationCode::IBitwiseAnd, thread_id, seg_mask);
-        Node max_thread_id = Operation(OperationCode::IBitwiseOr, min_thread_id,
-                                       Operation(OperationCode::IBitwiseAnd, clamp, neg_seg_mask));
-
-        Node src_thread_id = [instr, index, neg_seg_mask, min_thread_id, thread_id] {
-            switch (instr.shfl.operation) {
-            case ShuffleOperation::Idx:
-                return Operation(OperationCode::IBitwiseOr,
-                                 Operation(OperationCode::IBitwiseAnd, index, neg_seg_mask),
-                                 min_thread_id);
-            case ShuffleOperation::Down:
-                return Operation(OperationCode::IAdd, thread_id, index);
-            case ShuffleOperation::Up:
-                return Operation(OperationCode::IAdd, thread_id,
-                                 Operation(OperationCode::INegate, index));
-            case ShuffleOperation::Bfly:
-                return Operation(OperationCode::IBitwiseXor, thread_id, index);
-            }
-            UNREACHABLE();
-            return Immediate(0U);
-        }();
-
-        Node in_bounds = [instr, src_thread_id, min_thread_id, max_thread_id] {
-            if (instr.shfl.operation == ShuffleOperation::Up) {
-                return Operation(OperationCode::LogicalIGreaterEqual, src_thread_id, min_thread_id);
-            } else {
-                return Operation(OperationCode::LogicalILessEqual, src_thread_id, max_thread_id);
-            }
-        }();
-
-        SetPredicate(bb, instr.shfl.pred48, in_bounds);
-        SetRegister(
-            bb, instr.gpr0,
-            Operation(OperationCode::ShuffleIndexed, GetRegister(instr.gpr8), src_thread_id));
-        break;
-    }
-    case OpCode::Id::FSWZADD: {
-        UNIMPLEMENTED_IF(instr.fswzadd.ndv);
-
-        Node op_a = GetRegister(instr.gpr8);
-        Node op_b = GetRegister(instr.gpr20);
-        Node mask = Immediate(static_cast<u32>(instr.fswzadd.swizzle));
-        SetRegister(bb, instr.gpr0, Operation(OperationCode::FSwizzleAdd, op_a, op_b, mask));
-        break;
-    }
-    default:
-        UNIMPLEMENTED_MSG("Unhandled warp instruction: {}", opcode->get().GetName());
-        break;
-    }
-
-    return pc;
-}
-
-} // namespace VideoCommon::Shader
-- 
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