dolphin/Source/Core/VideoCommon/IndexGenerator.h
Lioncash 10f7674651 VideoCommon/IndexGenerator: Eliminate static state
Now that we've extracted all of the stateless functions that can be
hidden, it's time to make the index generator a regular class with
active data members.

This can just be a member that sits within the vertex manager base
class. By deglobalizing the state of the index generator we also get rid
of the wonky dual-initializing that was going on within the OpenGL
backend.

Since the renderer is always initialized before the vertex manager, we
now only call Init() once throughout the execution lifecycle.
2019-12-05 10:49:32 -05:00

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// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
// This is currently only used by the DX backend, but it may make sense to
// use it in the GL backend or a future DX10 backend too.
#pragma once
#include <array>
#include "Common/CommonTypes.h"
class IndexGenerator
{
public:
void Init();
void Start(u16* index_ptr);
void AddIndices(int primitive, u32 num_vertices);
void AddExternalIndices(const u16* indices, u32 num_indices, u32 num_vertices);
// returns numprimitives
u32 GetNumVerts() const { return m_base_index; }
u32 GetIndexLen() const { return static_cast<u32>(m_index_buffer_current - m_base_index_ptr); }
u32 GetRemainingIndices() const;
private:
u16* m_index_buffer_current = nullptr;
u16* m_base_index_ptr = nullptr;
u32 m_base_index = 0;
using PrimitiveFunction = u16* (*)(u16*, u32, u32);
std::array<PrimitiveFunction, 8> m_primitive_table{};
};