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407 lines
12 KiB
407 lines
12 KiB
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//
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//=============================================================================//
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#ifndef TRANSITION_TABLE_H
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#define TRANSITION_TABLE_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "utlvector.h"
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#include "shadershadowdx8.h"
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#include "UtlSortVector.h"
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#include "checksum_crc.h"
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#include "shaderapi/ishaderapi.h"
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// Required for DEBUG_BOARD_STATE
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#include "shaderapidx8_global.h"
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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struct IDirect3DStateBlock9;
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//-----------------------------------------------------------------------------
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// Enumeration for ApplyStateFunc_ts
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//-----------------------------------------------------------------------------
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// Any function that does not require a texture stage
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// NOTE: If you change this, change the function table s_pRenderFunctionTable[] below!!
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enum RenderStateFunc_t
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{
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RENDER_STATE_DepthTest = 0,
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RENDER_STATE_ZWriteEnable,
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RENDER_STATE_ColorWriteEnable,
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RENDER_STATE_AlphaTest,
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RENDER_STATE_FillMode,
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RENDER_STATE_Lighting,
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RENDER_STATE_SpecularEnable,
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RENDER_STATE_SRGBWriteEnable,
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RENDER_STATE_AlphaBlend,
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RENDER_STATE_SeparateAlphaBlend,
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RENDER_STATE_CullEnable,
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RENDER_STATE_VertexBlendEnable,
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RENDER_STATE_FogMode,
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RENDER_STATE_ActivateFixedFunction,
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RENDER_STATE_TextureEnable,
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RENDER_STATE_DiffuseMaterialSource,
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RENDER_STATE_DisableFogGammaCorrection,
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RENDER_STATE_EnableAlphaToCoverage,
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RENDER_STATE_COUNT,
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};
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// Any function that requires a texture stage
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// NOTE: If you change this, change the function table s_pTextureFunctionTable[] below!!
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enum TextureStateFunc_t
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{
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TEXTURE_STATE_TexCoordIndex = 0,
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TEXTURE_STATE_SRGBReadEnable,
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TEXTURE_STATE_Fetch4Enable,
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#ifdef DX_TO_GL_ABSTRACTION
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TEXTURE_STATE_ShadowFilterEnable,
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#endif
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// Fixed function states
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TEXTURE_STATE_ColorTextureStage,
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TEXTURE_STATE_AlphaTextureStage,
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TEXTURE_STATE_COUNT
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};
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//-----------------------------------------------------------------------------
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// Types related to transition table entries
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//-----------------------------------------------------------------------------
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typedef void (*ApplyStateFunc_t)( const ShadowState_t& shadowState, int arg );
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//-----------------------------------------------------------------------------
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// The DX8 implementation of the transition table
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//-----------------------------------------------------------------------------
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class CTransitionTable
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{
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public:
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struct CurrentTextureStageState_t
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{
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D3DTEXTUREOP m_ColorOp;
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int m_ColorArg1;
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int m_ColorArg2;
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D3DTEXTUREOP m_AlphaOp;
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int m_AlphaArg1;
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int m_AlphaArg2;
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};
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struct CurrentSamplerState_t
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{
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bool m_SRGBReadEnable;
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bool m_Fetch4Enable;
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bool m_ShadowFilterEnable;
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};
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struct CurrentState_t
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{
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// Everything in this 'CurrentState' structure is a state whose value we don't care about
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// under certain circumstances, (which therefore can diverge from the shadow state),
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// or states which we override in the dynamic pass.
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// Alpha state
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bool m_AlphaBlendEnable;
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D3DBLEND m_SrcBlend;
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D3DBLEND m_DestBlend;
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D3DBLENDOP m_BlendOp;
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// GR - Separate alpha state
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bool m_SeparateAlphaBlendEnable;
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D3DBLEND m_SrcBlendAlpha;
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D3DBLEND m_DestBlendAlpha;
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D3DBLENDOP m_BlendOpAlpha;
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// Depth testing states
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D3DZBUFFERTYPE m_ZEnable;
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D3DCMPFUNC m_ZFunc;
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PolygonOffsetMode_t m_ZBias;
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// Alpha testing states
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bool m_AlphaTestEnable;
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D3DCMPFUNC m_AlphaFunc;
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int m_AlphaRef;
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bool m_ForceDepthFuncEquals;
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bool m_bOverrideDepthEnable;
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D3DZBUFFERTYPE m_OverrideZWriteEnable;
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bool m_bOverrideAlphaWriteEnable;
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bool m_bOverriddenAlphaWriteValue;
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bool m_bOverrideColorWriteEnable;
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bool m_bOverriddenColorWriteValue;
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DWORD m_ColorWriteEnable;
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bool m_bLinearColorSpaceFrameBufferEnable;
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bool m_StencilEnable;
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D3DCMPFUNC m_StencilFunc;
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int m_StencilRef;
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int m_StencilMask;
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DWORD m_StencilFail;
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DWORD m_StencilZFail;
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DWORD m_StencilPass;
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int m_StencilWriteMask;
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// Texture stage state
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CurrentTextureStageState_t m_TextureStage[MAX_TEXTURE_STAGES];
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CurrentSamplerState_t m_SamplerState[MAX_SAMPLERS];
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};
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public:
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// constructor, destructor
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CTransitionTable( );
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virtual ~CTransitionTable();
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// Initialization, shutdown
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bool Init( );
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void Shutdown( );
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// Resets the snapshots...
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void Reset();
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// Takes a snapshot
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StateSnapshot_t TakeSnapshot( );
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// Take startup snapshot
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void TakeDefaultStateSnapshot( );
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// Makes the board state match the snapshot
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void UseSnapshot( StateSnapshot_t snapshotId );
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// Cause the board to match the default state snapshot
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void UseDefaultState();
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// Snapshotted state overrides
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void ForceDepthFuncEquals( bool bEnable );
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void OverrideDepthEnable( bool bEnable, bool bDepthEnable );
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void OverrideAlphaWriteEnable( bool bOverrideEnable, bool bAlphaWriteEnable );
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void OverrideColorWriteEnable( bool bOverrideEnable, bool bColorWriteEnable );
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void EnableLinearColorSpaceFrameBuffer( bool bEnable );
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// Returns a particular snapshot
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const ShadowState_t &GetSnapshot( StateSnapshot_t snapshotId ) const;
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const ShadowShaderState_t &GetSnapshotShader( StateSnapshot_t snapshotId ) const;
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// Gets the current shadow state
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const ShadowState_t *CurrentShadowState() const;
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const ShadowShaderState_t *CurrentShadowShaderState() const;
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// Return the current shapshot
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int CurrentSnapshot() const { return m_CurrentSnapshotId; }
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CurrentState_t& CurrentState() { return m_CurrentState; }
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#ifdef DEBUG_BOARD_STATE
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ShadowState_t& BoardState() { return m_BoardState; }
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ShadowShaderState_t& BoardShaderState() { return m_BoardShaderState; }
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#endif
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// The following are meant to be used by the transition table only
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public:
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// Applies alpha blending
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void ApplyAlphaBlend( const ShadowState_t& state );
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// GR - separate alpha blend
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void ApplySeparateAlphaBlend( const ShadowState_t& state );
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void ApplyAlphaTest( const ShadowState_t& state );
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void ApplyDepthTest( const ShadowState_t& state );
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// Applies alpha texture op
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void ApplyColorTextureStage( const ShadowState_t& state, int stage );
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void ApplyAlphaTextureStage( const ShadowState_t& state, int stage );
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void ApplySRGBWriteEnable( const ShadowState_t& state );
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private:
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enum
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{
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INVALID_TRANSITION_OP = 0xFFFFFF
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};
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typedef short ShadowStateId_t;
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// For the transition table
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struct TransitionList_t
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{
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unsigned int m_FirstOperation : 24;
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unsigned int m_NumOperations : 8;
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};
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union TransitionOp_t
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{
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unsigned char m_nBits;
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struct
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{
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unsigned char m_nOpCode : 7;
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unsigned char m_bIsTextureCode : 1;
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} m_nInfo;
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};
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struct SnapshotShaderState_t
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{
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ShadowShaderState_t m_ShaderState;
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ShadowStateId_t m_ShadowStateId;
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unsigned short m_nReserved; // Pad to 2 ints
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unsigned int m_nReserved2;
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};
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struct ShadowStateDictEntry_t
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{
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CRC32_t m_nChecksum;
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ShadowStateId_t m_nShadowStateId;
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};
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struct SnapshotDictEntry_t
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{
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CRC32_t m_nChecksum;
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StateSnapshot_t m_nSnapshot;
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};
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class ShadowStateDictLessFunc
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{
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public:
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bool Less( const ShadowStateDictEntry_t &src1, const ShadowStateDictEntry_t &src2, void *pCtx );
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};
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class SnapshotDictLessFunc
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{
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public:
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bool Less( const SnapshotDictEntry_t &src1, const SnapshotDictEntry_t &src2, void *pCtx );
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};
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class UniqueSnapshotLessFunc
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{
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public:
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bool Less( const TransitionList_t &src1, const TransitionList_t &src2, void *pCtx );
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};
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CurrentTextureStageState_t &TextureStage( int stage ) { return m_CurrentState.m_TextureStage[stage]; }
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const CurrentTextureStageState_t &TextureStage( int stage ) const { return m_CurrentState.m_TextureStage[stage]; }
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CurrentSamplerState_t &SamplerState( int stage ) { return m_CurrentState.m_SamplerState[stage]; }
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const CurrentSamplerState_t &SamplerState( int stage ) const { return m_CurrentState.m_SamplerState[stage]; }
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// creates state snapshots
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ShadowStateId_t CreateShadowState( const ShadowState_t ¤tState );
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StateSnapshot_t CreateStateSnapshot( ShadowStateId_t shadowStateId, const ShadowShaderState_t& currentShaderState );
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// finds state snapshots
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ShadowStateId_t FindShadowState( const ShadowState_t& currentState ) const;
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StateSnapshot_t FindStateSnapshot( ShadowStateId_t id, const ShadowShaderState_t& currentState ) const;
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// Finds identical transition lists
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unsigned int FindIdenticalTransitionList( unsigned int firstElem,
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unsigned short numOps, unsigned int nFirstTest ) const;
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// Adds a transition
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void AddTransition( RenderStateFunc_t func );
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void AddTextureTransition( TextureStateFunc_t func, int stage );
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// Apply a transition
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void ApplyTransition( TransitionList_t& list, int snapshot );
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// Creates an entry in the transition table
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void CreateTransitionTableEntry( int to, int from );
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// Checks if a state is valid
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bool TestShadowState( const ShadowState_t& state, const ShadowShaderState_t &shaderState );
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// Perform state block overrides
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void PerformShadowStateOverrides( );
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// Applies the transition list
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void ApplyTransitionList( int snapshot, int nFirstOp, int nOpCount );
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// Apply shader state (stuff that doesn't lie in the transition table)
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void ApplyShaderState( const ShadowState_t &shadowState, const ShadowShaderState_t &shaderState );
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// Wrapper for the non-standard transitions for stateblock + non-stateblock cases
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int CreateNormalTransitions( const ShadowState_t& fromState, const ShadowState_t& toState, bool bForce );
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// State setting methods
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void SetZEnable( D3DZBUFFERTYPE nEnable );
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void SetZFunc( D3DCMPFUNC nCmpFunc );
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private:
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// Sets up the default state
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StateSnapshot_t m_DefaultStateSnapshot;
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TransitionList_t m_DefaultTransition;
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ShadowState_t m_DefaultShadowState;
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// The current snapshot id
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ShadowStateId_t m_CurrentShadowId;
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StateSnapshot_t m_CurrentSnapshotId;
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// Maintains a list of all used snapshot transition states
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CUtlVector< ShadowState_t > m_ShadowStateList;
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// Lookup table for fast snapshot finding
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CUtlSortVector< ShadowStateDictEntry_t, ShadowStateDictLessFunc > m_ShadowStateDict;
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// The snapshot transition table
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CUtlVector< CUtlVector< TransitionList_t > > m_TransitionTable;
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// List of unique transitions
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CUtlSortVector< TransitionList_t, UniqueSnapshotLessFunc > m_UniqueTransitions;
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// Stores all state transition operations
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CUtlVector< TransitionOp_t > m_TransitionOps;
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// Stores all state for a particular snapshot
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CUtlVector< SnapshotShaderState_t > m_SnapshotList;
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// Lookup table for fast snapshot finding
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CUtlSortVector< SnapshotDictEntry_t, SnapshotDictLessFunc > m_SnapshotDict;
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// The current board state.
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CurrentState_t m_CurrentState;
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#ifdef DEBUG_BOARD_STATE
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// Maintains the total shadow state
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ShadowState_t m_BoardState;
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ShadowShaderState_t m_BoardShaderState;
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#endif
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};
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//-----------------------------------------------------------------------------
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// Inline methods
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//-----------------------------------------------------------------------------
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inline const ShadowState_t &CTransitionTable::GetSnapshot( StateSnapshot_t snapshotId ) const
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{
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Assert( (snapshotId >= 0) && (snapshotId < m_SnapshotList.Count()) );
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return m_ShadowStateList[m_SnapshotList[snapshotId].m_ShadowStateId];
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}
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inline const ShadowShaderState_t &CTransitionTable::GetSnapshotShader( StateSnapshot_t snapshotId ) const
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{
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Assert( (snapshotId >= 0) && (snapshotId < m_SnapshotList.Count()) );
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return m_SnapshotList[snapshotId].m_ShaderState;
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}
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inline const ShadowState_t *CTransitionTable::CurrentShadowState() const
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{
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if ( m_CurrentShadowId == -1 )
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return NULL;
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Assert( (m_CurrentShadowId >= 0) && (m_CurrentShadowId < m_ShadowStateList.Count()) );
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return &m_ShadowStateList[m_CurrentShadowId];
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}
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inline const ShadowShaderState_t *CTransitionTable::CurrentShadowShaderState() const
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{
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if ( m_CurrentShadowId == -1 )
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return NULL;
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Assert( (m_CurrentShadowId >= 0) && (m_CurrentShadowId < m_ShadowStateList.Count()) );
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return &m_SnapshotList[m_CurrentShadowId].m_ShaderState;
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}
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#endif // TRANSITION_TABLE_H
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