177 lines
4.5 KiB
C++
177 lines
4.5 KiB
C++
//========= 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 SHADERSHADOWDX8_H
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#define SHADERSHADOWDX8_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "togl/rendermechanism.h"
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#include "locald3dtypes.h"
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#include "shaderapi/ishadershadow.h"
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class IShaderAPIDX8;
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//-----------------------------------------------------------------------------
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// Important enumerations
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//-----------------------------------------------------------------------------
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enum
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{
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MAX_SAMPLERS = 16,
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MAX_TEXTURE_STAGES = 16,
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};
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//-----------------------------------------------------------------------------
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// A structure maintaining the shadowed board state
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//-----------------------------------------------------------------------------
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struct TextureStageShadowState_t
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{
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// State shadowing affects these
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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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int m_TexCoordIndex;
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};
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struct SamplerShadowState_t
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{
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bool m_TextureEnable : 1;
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bool m_SRGBReadEnable : 1;
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bool m_Fetch4Enable : 1;
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bool m_ShadowFilterEnable : 1;
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};
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struct ShadowState_t
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{
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// Depth buffering state
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D3DCMPFUNC m_ZFunc;
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D3DZBUFFERTYPE m_ZEnable;
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// Write enable
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DWORD m_ColorWriteEnable;
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// Fill mode
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D3DFILLMODE m_FillMode;
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// Alpha state
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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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// Separate alpha blend state
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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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D3DCMPFUNC m_AlphaFunc;
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int m_AlphaRef;
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// Texture stage state
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TextureStageShadowState_t m_TextureStage[MAX_TEXTURE_STAGES];
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// Sampler state
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SamplerShadowState_t m_SamplerState[MAX_SAMPLERS];
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ShaderFogMode_t m_FogMode;
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D3DMATERIALCOLORSOURCE m_DiffuseMaterialSource;
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unsigned char m_ZWriteEnable:1;
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unsigned char m_ZBias:2;
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// Cull State?
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unsigned char m_CullEnable:1;
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// Lighting in hardware?
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unsigned char m_Lighting:1;
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unsigned char m_SpecularEnable:1;
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unsigned char m_AlphaBlendEnable:1;
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unsigned char m_AlphaTestEnable:1;
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// Fixed function?
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unsigned char m_UsingFixedFunction:1;
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// Vertex blending?
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unsigned char m_VertexBlendEnable:1;
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// Auto-convert from linear to gamma upon writing to the frame buffer?
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unsigned char m_SRGBWriteEnable:1;
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// Seperate Alpha Blend?
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unsigned char m_SeparateAlphaBlendEnable:1;
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// Stencil?
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unsigned char m_StencilEnable:1;
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unsigned char m_bDisableFogGammaCorrection:1;
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unsigned char m_EnableAlphaToCoverage:1;
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unsigned char m_Reserved : 1;
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unsigned short m_nReserved2;
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};
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//-----------------------------------------------------------------------------
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// These are part of the "shadow" since they describe the shading algorithm
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// but aren't actually captured in the state transition table
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// because it would produce too many transitions
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//-----------------------------------------------------------------------------
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struct ShadowShaderState_t
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{
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// The vertex + pixel shader group to use...
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VertexShader_t m_VertexShader;
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PixelShader_t m_PixelShader;
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// The static vertex + pixel shader indices
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int m_nStaticVshIndex;
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int m_nStaticPshIndex;
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// Vertex data used by this snapshot
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// Note that the vertex format actually used will be the
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// aggregate of the vertex formats used by all snapshots in a material
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VertexFormat_t m_VertexUsage;
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// Morph data used by this snapshot
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// Note that the morph format actually used will be the
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// aggregate of the morph formats used by all snapshots in a material
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MorphFormat_t m_MorphUsage;
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// Modulate constant color into the vertex color
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bool m_ModulateConstantColor;
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bool m_nReserved[3];
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};
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//-----------------------------------------------------------------------------
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// The shader setup API
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//-----------------------------------------------------------------------------
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abstract_class IShaderShadowDX8 : public IShaderShadow
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{
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public:
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// Initializes it
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virtual void Init() = 0;
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// Gets at the shadow state
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virtual ShadowState_t const& GetShadowState() = 0;
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virtual ShadowShaderState_t const& GetShadowShaderState() = 0;
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// This must be called right before taking a snapshot
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virtual void ComputeAggregateShadowState( ) = 0;
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// Class factory methods
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static IShaderShadowDX8* Create( IShaderAPIDX8* pShaderAPIDX8 );
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static void Destroy( IShaderShadowDX8* pShaderShadow );
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};
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extern IShaderShadowDX8 *g_pShaderShadowDx8;
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#endif // SHADERSHADOWDX8_H
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