214 lines
7.8 KiB
C++
214 lines
7.8 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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// $Header: $
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// $NoKeywords: $
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//===========================================================================//
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#ifndef IMATERIALSYSTEMHARDWARECONFIG_H
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#define IMATERIALSYSTEMHARDWARECONFIG_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier1/interface.h"
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//-----------------------------------------------------------------------------
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// GL helpers
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//-----------------------------------------------------------------------------
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FORCEINLINE bool IsEmulatingGL()
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{
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static bool bIsEmulatingGL = ( Plat_GetCommandLineA() ) ? ( strstr( Plat_GetCommandLineA(), "-r_emulate_gl" ) != NULL ) : false;
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return bIsEmulatingGL;
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}
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FORCEINLINE bool IsOpenGL( void )
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{
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return IsPlatformOpenGL() || IsEmulatingGL();
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}
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//-----------------------------------------------------------------------------
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// Material system interface version
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//-----------------------------------------------------------------------------
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#define MATERIALSYSTEM_HARDWARECONFIG_INTERFACE_VERSION "MaterialSystemHardwareConfig012"
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// HDRFIXME NOTE: must match common_ps_fxc.h
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enum HDRType_t
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{
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HDR_TYPE_NONE,
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HDR_TYPE_INTEGER,
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HDR_TYPE_FLOAT,
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};
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// For now, vertex compression is simply "on or off" (for the sake of simplicity
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// and MeshBuilder perf.), but later we may support multiple flavours.
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enum VertexCompressionType_t
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{
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// This indicates an uninitialized VertexCompressionType_t value
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VERTEX_COMPRESSION_INVALID = 0xFFFFFFFF,
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// 'VERTEX_COMPRESSION_NONE' means that no elements of a vertex are compressed
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VERTEX_COMPRESSION_NONE = 0,
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// Currently (more stuff may be added as needed), 'VERTEX_COMPRESSION_ON' means:
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// - if a vertex contains VERTEX_ELEMENT_NORMAL, this is compressed
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// (see CVertexBuilder::CompressedNormal3f)
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// - if a vertex contains VERTEX_ELEMENT_USERDATA4 (and a normal - together defining a tangent
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// frame, with the binormal reconstructed in the vertex shader), this is compressed
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// (see CVertexBuilder::CompressedUserData)
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// - if a vertex contains VERTEX_ELEMENT_BONEWEIGHTSx, this is compressed
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// (see CVertexBuilder::CompressedBoneWeight3fv)
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VERTEX_COMPRESSION_ON = 1
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};
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// use DEFCONFIGMETHOD to define time-critical methods that we want to make just return constants
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// on the 360, so that the checks will happen at compile time. Not all methods are defined this way
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// - just the ones that I perceive as being called often in the frame interval.
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#ifdef _X360
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#define DEFCONFIGMETHOD( ret_type, method, xbox_return_value ) \
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FORCEINLINE ret_type method const \
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{ \
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return xbox_return_value; \
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}
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#else
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#define DEFCONFIGMETHOD( ret_type, method, xbox_return_value ) \
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virtual ret_type method const = 0;
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#endif
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//-----------------------------------------------------------------------------
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// Material system configuration
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//-----------------------------------------------------------------------------
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class IMaterialSystemHardwareConfig
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{
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public:
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// on xbox, some methods are inlined to return constants
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DEFCONFIGMETHOD( bool, HasDestAlphaBuffer(), true );
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DEFCONFIGMETHOD( bool, HasStencilBuffer(), true );
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virtual int GetFrameBufferColorDepth() const = 0;
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virtual int GetSamplerCount() const = 0;
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virtual bool HasSetDeviceGammaRamp() const = 0;
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DEFCONFIGMETHOD( bool, SupportsCompressedTextures(), true );
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virtual VertexCompressionType_t SupportsCompressedVertices() const = 0;
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virtual bool SupportsNormalMapCompression() const { return false; }
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DEFCONFIGMETHOD( bool, SupportsVertexAndPixelShaders(), true );
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DEFCONFIGMETHOD( bool, SupportsPixelShaders_1_4(), true );
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DEFCONFIGMETHOD( bool, SupportsStaticControlFlow(), true );
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DEFCONFIGMETHOD( bool, SupportsPixelShaders_2_0(), true );
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DEFCONFIGMETHOD( bool, SupportsVertexShaders_2_0(), true );
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virtual int MaximumAnisotropicLevel() const = 0; // 0 means no anisotropic filtering
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virtual int MaxTextureWidth() const = 0;
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virtual int MaxTextureHeight() const = 0;
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virtual int TextureMemorySize() const = 0;
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virtual bool SupportsOverbright() const = 0;
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virtual bool SupportsCubeMaps() const = 0;
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virtual bool SupportsMipmappedCubemaps() const = 0;
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virtual bool SupportsNonPow2Textures() const = 0;
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// The number of texture stages represents the number of computations
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// we can do in the fixed-function pipeline, it is *not* related to the
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// simultaneous number of textures we can use
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virtual int GetTextureStageCount() const = 0;
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virtual int NumVertexShaderConstants() const = 0;
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virtual int NumPixelShaderConstants() const = 0;
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virtual int MaxNumLights() const = 0;
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virtual bool SupportsHardwareLighting() const = 0;
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virtual int MaxBlendMatrices() const = 0;
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virtual int MaxBlendMatrixIndices() const = 0;
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virtual int MaxTextureAspectRatio() const = 0;
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virtual int MaxVertexShaderBlendMatrices() const = 0;
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virtual int MaxUserClipPlanes() const = 0;
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virtual bool UseFastClipping() const = 0;
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// This here should be the major item looked at when checking for compat
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// from anywhere other than the material system shaders
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DEFCONFIGMETHOD( int, GetDXSupportLevel(), 98 );
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virtual const char *GetShaderDLLName() const = 0;
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virtual bool ReadPixelsFromFrontBuffer() const = 0;
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// Are dx dynamic textures preferred?
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virtual bool PreferDynamicTextures() const = 0;
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DEFCONFIGMETHOD( bool, SupportsHDR(), true );
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virtual bool HasProjectedBumpEnv() const = 0;
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virtual bool SupportsSpheremapping() const = 0;
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virtual bool NeedsAAClamp() const = 0;
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virtual bool NeedsATICentroidHack() const = 0;
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virtual bool SupportsColorOnSecondStream() const = 0;
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virtual bool SupportsStaticPlusDynamicLighting() const = 0;
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// Does our card have a hard time with fillrate
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// relative to other cards w/ the same dx level?
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virtual bool PreferReducedFillrate() const = 0;
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// This is the max dx support level supported by the card
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virtual int GetMaxDXSupportLevel() const = 0;
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// Does the card specify fog color in linear space when sRGBWrites are enabled?
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virtual bool SpecifiesFogColorInLinearSpace() const = 0;
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// Does the card support sRGB reads/writes?
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DEFCONFIGMETHOD( bool, SupportsSRGB(), true );
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DEFCONFIGMETHOD( bool, FakeSRGBWrite(), false );
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DEFCONFIGMETHOD( bool, CanDoSRGBReadFromRTs(), true );
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virtual bool SupportsGLMixedSizeTargets() const = 0;
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virtual bool IsAAEnabled() const = 0; // Is antialiasing being used?
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// NOTE: Anything after this was added after shipping HL2.
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virtual int GetVertexTextureCount() const = 0;
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virtual int GetMaxVertexTextureDimension() const = 0;
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virtual int MaxTextureDepth() const = 0;
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virtual HDRType_t GetHDRType() const = 0;
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virtual HDRType_t GetHardwareHDRType() const = 0;
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DEFCONFIGMETHOD( bool, SupportsPixelShaders_2_b(), true );
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virtual bool SupportsStreamOffset() const = 0;
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virtual int StencilBufferBits() const = 0;
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virtual int MaxViewports() const = 0;
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virtual void OverrideStreamOffsetSupport( bool bOverrideEnabled, bool bEnableSupport ) = 0;
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virtual int GetShadowFilterMode() const = 0;
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virtual int NeedsShaderSRGBConversion() const = 0;
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DEFCONFIGMETHOD( bool, UsesSRGBCorrectBlending(), true );
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virtual bool SupportsShaderModel_3_0() const = 0;
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virtual bool HasFastVertexTextures() const = 0;
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virtual int MaxHWMorphBatchCount() const = 0;
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// Does the board actually support this?
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DEFCONFIGMETHOD( bool, ActuallySupportsPixelShaders_2_b(), true );
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virtual bool SupportsHDRMode( HDRType_t nHDRMode ) const = 0;
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virtual bool GetHDREnabled( void ) const = 0;
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virtual void SetHDREnabled( bool bEnable ) = 0;
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virtual bool SupportsBorderColor( void ) const = 0;
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virtual bool SupportsFetch4( void ) const = 0;
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virtual bool CanStretchRectFromTextures( void ) const = 0;
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inline bool ShouldAlwaysUseShaderModel2bShaders() const { return IsOpenGL(); }
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inline bool PlatformRequiresNonNullPixelShaders() const { return IsOpenGL(); }
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};
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#endif // IMATERIALSYSTEMHARDWARECONFIG_H
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