dolphin/Source/Plugins/Plugin_VideoDX11/Src/GfxState.h

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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#pragma once
#include "D3DBase.h"
#include <stack>
using std::stack;
namespace D3D
{
// stores the pipeline state to use when calling VertexManager::Flush()
class EmuGfxState
{
public:
EmuGfxState();
~EmuGfxState();
void SetVShader(ID3D11VertexShader* shader, D3DBlob* bcode);
void SetPShader(ID3D11PixelShader* shader);
void SetInputElements(const D3D11_INPUT_ELEMENT_DESC* elems, UINT num);
void SetShaderResource(unsigned int stage, ID3D11ShaderResourceView* srv);
void ApplyState(); // apply current state
void AlphaPass(); // only modify the current state to enable the alpha pass
void Reset();
// blend state
void SetAlphaBlendEnable(bool enable);
void SetRenderTargetWriteMask(UINT8 mask);
void SetSrcBlend(D3D11_BLEND val);
void SetDestBlend(D3D11_BLEND val);
void SetBlendOp(D3D11_BLEND_OP val);
// sampler states
void SetSamplerFilter(DWORD stage, D3D11_FILTER filter);
// TODO: add methods for changing the other states instead of modifying them directly
D3D11_SAMPLER_DESC samplerdesc[8];
D3D11_RASTERIZER_DESC rastdesc;
D3D11_DEPTH_STENCIL_DESC depthdesc;
float psconstants[116];
float vsconstants[952];
bool vscbufchanged;
bool pscbufchanged;
private:
ID3D11VertexShader* vertexshader;
D3DBlob* vsbytecode;
ID3D11PixelShader* pixelshader;
D3DBlob* psbytecode;
bool vshaderchanged;
ID3D11Buffer* vscbuf;
ID3D11Buffer* pscbuf;
ID3D11InputLayout* inp_layout;
D3D11_INPUT_ELEMENT_DESC inp_elems[32];
int num_inp_elems;
ID3D11ShaderResourceView* shader_resources[8];
D3D11_BLEND_DESC blenddesc;
bool apply_called;
};
template<typename T> class AutoState
{
public:
AutoState(const T* object);
AutoState(const AutoState<T> &source);
~AutoState();
const inline T* GetPtr() const { return state; }
private:
const T* state;
};
typedef AutoState<ID3D11BlendState> AutoBlendState;
typedef AutoState<ID3D11DepthStencilState> AutoDepthStencilState;
typedef AutoState<ID3D11RasterizerState> AutoRasterizerState;
class StateManager
{
public:
StateManager();
// call any of these to change the affected states
void PushBlendState(const ID3D11BlendState* state);
void PushDepthState(const ID3D11DepthStencilState* state);
void PushRasterizerState(const ID3D11RasterizerState* state);
// call these after drawing
void PopBlendState();
void PopDepthState();
void PopRasterizerState();
// call this before any drawing operation if states could have changed meanwhile
void Apply();
private:
stack<AutoBlendState> blendstates;
stack<AutoDepthStencilState> depthstates;
stack<AutoRasterizerState> raststates;
ID3D11BlendState* cur_blendstate;
ID3D11DepthStencilState* cur_depthstate;
ID3D11RasterizerState* cur_raststate;
};
extern EmuGfxState* gfxstate;
extern StateManager* stateman;
} // namespace