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public/rendersystem/irenderhardwareconfig.h

@@ -0,0 +1,132 @@
+//===== Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ======//
+//
+// Purpose: 
+//
+// $Header: $
+// $NoKeywords: $
+//===========================================================================//
+
+#ifndef IRENDERHARDWARECONFIG_H
+#define IRENDERHARDWARECONFIG_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "tier1/interface.h"
+#include "bitmap/imageformat.h"
+
+
+// use DEFCONFIGMETHOD to define time-critical methods that we want to make just return constants
+// on the 360, so that the checks will happen at compile time. Not all methods are defined this way
+// - just the ones that I perceive as being called often in the frame interval.
+#ifdef _X360
+#define DEFCONFIGMETHOD( ret_type, method, xbox_return_value )		\
+	FORCEINLINE ret_type method const 									\
+{																	\
+	return xbox_return_value;										\
+	}
+
+
+#else
+#define DEFCONFIGMETHOD( ret_type, method, xbox_return_value )	\
+	virtual ret_type method const = 0;
+#endif
+
+
+
+//-----------------------------------------------------------------------------
+// Render system configuration
+//-----------------------------------------------------------------------------
+class IRenderHardwareConfig
+{
+public:
+	virtual int	 GetFrameBufferColorDepth() const = 0;
+	virtual int  GetSamplerCount() const = 0;
+	virtual bool HasSetDeviceGammaRamp() const = 0;
+	DEFCONFIGMETHOD( bool, SupportsNormalMapCompression(), true );
+	virtual int  MaximumAnisotropicLevel() const = 0;	// 0 means no anisotropic filtering
+	virtual int  MaxTextureWidth() const = 0;
+	virtual int  MaxTextureHeight() const = 0;
+	virtual int	 TextureMemorySize() const = 0;
+	virtual bool SupportsMipmappedCubemaps() const = 0;
+
+	virtual int	 NumVertexShaderConstants() const = 0;
+	virtual int	 NumPixelShaderConstants() const = 0;
+	virtual int	 MaxNumLights() const = 0;
+	virtual int	 MaxTextureAspectRatio() const = 0;
+	virtual int	 MaxVertexShaderBlendMatrices() const = 0;
+	virtual int	 MaxUserClipPlanes() const = 0;
+	virtual bool UseFastClipping() const = 0;
+
+	// This here should be the major item looked at when checking for compat
+	// from anywhere other than the material system	shaders
+	DEFCONFIGMETHOD( int, GetDXSupportLevel(), 98 );
+	virtual const char *GetShaderDLLName() const = 0;
+
+	virtual bool ReadPixelsFromFrontBuffer() const = 0;
+
+	// Are dx dynamic textures preferred?
+	virtual bool PreferDynamicTextures() const = 0;
+
+	virtual bool NeedsAAClamp() const = 0;
+	virtual bool NeedsATICentroidHack() const = 0;
+
+	// This is the max dx support level supported by the card
+	virtual int	 GetMaxDXSupportLevel() const = 0;
+
+	// Does the card specify fog color in linear space when sRGBWrites are enabled?
+	virtual bool SpecifiesFogColorInLinearSpace() const = 0;
+
+	// Does the card support sRGB reads/writes?
+	DEFCONFIGMETHOD( bool, SupportsSRGB(), true );
+
+	virtual bool IsAAEnabled() const = 0;	// Is antialiasing being used?
+
+	// NOTE: Anything after this was added after shipping HL2.
+	virtual int GetVertexTextureCount() const = 0;
+	virtual int GetMaxVertexTextureDimension() const = 0;
+
+	virtual int  MaxTextureDepth() const = 0;
+
+	virtual bool SupportsStreamOffset() const = 0;
+
+	virtual int StencilBufferBits() const = 0;
+	virtual int MaxViewports() const = 0;
+
+	virtual void OverrideStreamOffsetSupport( bool bOverrideEnabled, bool bEnableSupport ) = 0;
+
+	virtual ShadowFilterMode_t GetShadowFilterMode( bool bForceLowQualityShadows, bool bPS30 ) const = 0;
+
+	virtual int NeedsShaderSRGBConversion() const = 0;
+
+	DEFCONFIGMETHOD( bool, UsesSRGBCorrectBlending(), true );
+
+	virtual bool HasFastVertexTextures() const = 0;
+	virtual int MaxHWMorphBatchCount() const = 0;
+
+	virtual bool SupportsBorderColor( void ) const = 0;
+	virtual bool SupportsFetch4( void ) const = 0;
+
+	virtual float GetShadowDepthBias() const = 0;
+	virtual float GetShadowSlopeScaleDepthBias() const = 0;
+
+	virtual bool PreferZPrepass() const = 0;
+
+	virtual bool SuppressPixelShaderCentroidHackFixup() const = 0;
+	virtual bool PreferTexturesInHWMemory() const = 0;
+	virtual bool PreferHardwareSync() const = 0;
+	virtual bool ActualHasFastVertexTextures() const = 0;
+
+	virtual bool SupportsShadowDepthTextures( void ) const = 0;
+	virtual ImageFormat GetShadowDepthTextureFormat( void ) const = 0;
+	virtual ImageFormat GetNullTextureFormat( void ) const = 0;
+	virtual int	GetMinDXSupportLevel() const = 0;
+	virtual bool IsUnsupported() const = 0;
+
+	// Necessary on the 360 to improve performance of hierarchical Z
+	virtual bool ReverseDepth() const = 0;
+};
+
+#endif // IRENDERHARDWARECONFIG_H