Serious-Engine/Sources/Engine/Graphics/Gfx_wrapper.h

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2016-03-11 14:57:17 +01:00
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
#pragma once
enum GfxBlend
{
GFX_ONE = 21,
GFX_ZERO = 22,
GFX_SRC_COLOR = 23,
GFX_INV_SRC_COLOR = 24,
GFX_DST_COLOR = 25,
GFX_INV_DST_COLOR = 26,
GFX_SRC_ALPHA = 27,
GFX_INV_SRC_ALPHA = 28,
};
enum GfxComp
{
GFX_NEVER = 41,
GFX_LESS = 42,
GFX_LESS_EQUAL = 43,
GFX_EQUAL = 44,
GFX_NOT_EQUAL = 45,
GFX_GREATER_EQUAL = 46,
GFX_GREATER = 47,
GFX_ALWAYS = 48,
};
enum GfxFace
{
GFX_NONE = 61,
GFX_FRONT = 62,
GFX_BACK = 63,
GFX_CW = 64,
GFX_CCW = 65,
};
enum GfxMatrixType
{
GFX_VIEW = 71,
GFX_PROJECTION = 72,
};
enum GfxWrap
{
GFX_REPEAT = 81,
GFX_CLAMP = 82,
};
enum GfxPolyMode
{
GFX_FILL = 91,
GFX_LINE = 92,
GFX_POINT = 93,
};
// functions initialization for OGL, D3D or NONE (dummy)
extern void GFX_SetFunctionPointers( INDEX iAPI);
// enable operations
extern void (*gfxEnableDepthWrite)(void);
extern void (*gfxEnableDepthBias)(void);
extern void (*gfxEnableDepthTest)(void);
extern void (*gfxEnableAlphaTest)(void);
extern void (*gfxEnableBlend)(void);
extern void (*gfxEnableDither)(void);
extern void (*gfxEnableTexture)(void);
extern void (*gfxEnableClipping)(void);
extern void (*gfxEnableClipPlane)(void);
// disable operations
extern void (*gfxDisableDepthWrite)(void);
extern void (*gfxDisableDepthBias)(void);
extern void (*gfxDisableDepthTest)(void);
extern void (*gfxDisableAlphaTest)(void);
extern void (*gfxDisableBlend)(void);
extern void (*gfxDisableDither)(void);
extern void (*gfxDisableTexture)(void);
extern void (*gfxDisableClipping)(void);
extern void (*gfxDisableClipPlane)(void);
// set blending operations
extern void (*gfxBlendFunc)( GfxBlend eSrc, GfxBlend eDst);
// set depth buffer compare mode
extern void (*gfxDepthFunc)( GfxComp eFunc);
// set depth buffer range
extern void (*gfxDepthRange)( FLOAT fMin, FLOAT fMax);
// color mask control (use CT_RMASK, CT_GMASK, CT_BMASK, CT_AMASK to enable specific channels)
extern void (*gfxSetColorMask)( ULONG ulColorMask);
extern ULONG gfxGetColorMask(void);
// PROJECTIONS
// set face culling
extern void (*gfxCullFace)( GfxFace eFace);
extern void (*gfxFrontFace)( GfxFace eFace);
// set custom clip plane (if NULL, disable it)
extern void (*gfxClipPlane)( const DOUBLE *pdPlane);
// set orthographic matrix
extern void (*gfxSetOrtho)( const FLOAT fLeft, const FLOAT fRight,
const FLOAT fTop, const FLOAT fBottom,
const FLOAT fNear, const FLOAT fFar, const BOOL bSubPixelAdjust);
// set frustrum matrix
extern void (*gfxSetFrustum)( const FLOAT fLeft, const FLOAT fRight,
const FLOAT fTop, const FLOAT fBottom,
const FLOAT fNear, const FLOAT fFar);
// set view matrix
extern void (*gfxSetViewMatrix)( const FLOAT *pfMatrix);
// set texture matrix
extern void (*gfxSetTextureMatrix)( const FLOAT *pfMatrix);
// polygon mode (point, line or fill)
extern void (*gfxPolygonMode)( GfxPolyMode ePolyMode);
// TEXTURES
// texture settings (holds current states of texture quality, size and such)
struct TextureSettings {
public:
//quailties
INDEX ts_iNormQualityO;
INDEX ts_iNormQualityA;
INDEX ts_iAnimQualityO;
INDEX ts_iAnimQualityA;
// sizes/forcing
PIX ts_pixNormSize;
PIX ts_pixAnimSize;
// texture formats (set by OGL or D3D)
ULONG ts_tfRGB8, ts_tfRGBA8; // true color
ULONG ts_tfRGB5, ts_tfRGBA4, ts_tfRGB5A1; // high color
ULONG ts_tfLA8, ts_tfL8; // grayscale
ULONG ts_tfCRGB, ts_tfCRGBA; // compressed formats
// maximum texel-byte ratio for largest texture size
INDEX ts_iMaxBytesPerTexel;
};
// singleton object for texture settings
extern struct TextureSettings TS;
// routine for updating texture settings from console variable
extern void UpdateTextureSettings(void);
// texture parameters for texture state changes
class CTexParams {
public:
INDEX tp_iFilter; // OpenGL texture mapping mode
INDEX tp_iAnisotropy; // texture degree of anisotropy (>=1.0f; 1.0=isotropic, default)
BOOL tp_bSingleMipmap; // texture has only one mipmap
GfxWrap tp_eWrapU, tp_eWrapV; // wrapping states
inline CTexParams(void) { Clear(); tp_bSingleMipmap = FALSE; };
inline void Clear(void) { tp_iFilter = 00; tp_iAnisotropy = 0; tp_eWrapU = tp_eWrapV = (GfxWrap)NONE; };
inline BOOL IsEqual( CTexParams tp) { return tp_iFilter==tp.tp_iFilter && tp_iAnisotropy==tp_iAnisotropy &&
tp_eWrapU==tp.tp_eWrapU && tp_eWrapV==tp.tp_eWrapV; };
};
// get current texture filtering mode
extern void gfxGetTextureFiltering( INDEX &iFilterType, INDEX &iAnisotropyDegree);
// set texture filtering
extern void gfxSetTextureFiltering( INDEX &iFilterType, INDEX &iAnisotropyDegree);
// set texture LOD biasing
extern void gfxSetTextureBiasing( FLOAT &fLODBias);
// set texture wrapping mode
extern void (*gfxSetTextureWrapping)( enum GfxWrap eWrapU, enum GfxWrap eWrapV);
// set texture modulation mode (1X or 2X)
extern void (*gfxSetTextureModulation)( INDEX iScale);
// set texture unit as active
extern void gfxSetTextureUnit( INDEX iUnit);
// generate texture for API
extern void (*gfxGenerateTexture)( ULONG &ulTexObject);
// unbind texture from API
extern void (*gfxDeleteTexture)( ULONG &ulTexObject);
// set texture as current
// - ulTexture = bind number for OGL, or *LPDIRECT3DTEXTURE8 for D3D (pointer to pointer!)
extern void gfxSetTexture( ULONG &ulTexObject, CTexParams &tpLocal);
// upload texture
// - ulTexture = bind number for OGL, or LPDIRECT3DTEXTURE8 for D3D
// - pulTexture = pointer to texture in 32-bit R,G,B,A format (in that byte order)
// - ulFormat = format in which the texture will be stored in accelerator's (or driver's) memory
// - bNoDiscard = no need to discard old texture (for OGL, this is like "use SubImage")
extern void gfxUploadTexture( ULONG *pulTexture, PIX pixWidth, PIX pixHeight, ULONG ulFormat, BOOL bNoDiscard);
// returns size of uploaded texture
extern SLONG gfxGetTextureSize( ULONG ulTexObject, BOOL bHasMipmaps=TRUE);
// returns bytes/pixels ratio for uploaded texture or texture format
extern INDEX gfxGetTexturePixRatio( ULONG ulTextureObject);
extern INDEX gfxGetFormatPixRatio( ULONG ulTextureFormat);
// VERTEX ARRAYS
// prepare arrays for API
extern void (*gfxSetVertexArray)( GFXVertex4 *pvtx, INDEX ctVtx);
extern void (*gfxSetNormalArray)( GFXNormal *pnor);
extern void (*gfxSetTexCoordArray)( GFXTexCoord *ptex, BOOL b4); // b4 = projective mapping (4 FLOATS)
extern void (*gfxSetColorArray)( GFXColor *pcol);
// draw prepared arrays
extern void (*gfxDrawElements)( INDEX ctElem, INDEX *pidx);
// set constant color for subsequent rendering (until 1st gfxSetColorArray() call!)
extern void (*gfxSetConstantColor)(COLOR col);
// color array usage control
extern void (*gfxEnableColorArray)(void);
extern void (*gfxDisableColorArray)(void);
// MISC
// force finish of rendering queue
extern void (*gfxFinish)(void);
// compiled vertex array control
extern void (*gfxLockArrays)(void);
extern void gfxUnlockArrays(void);
// helper functions for drawing simple primitives thru drawelements
inline void gfxResetArrays(void)
{
_avtxCommon.PopAll();
_atexCommon.PopAll();
_acolCommon.PopAll();
_aiCommonElements.PopAll();
}
// render elements to screen buffer
extern void gfxFlushElements(void);
extern void gfxFlushQuads(void);
// check GFX errors only in debug builds
#ifndef NDEBUG
extern void OGL_CheckError(void);
extern void D3D_CheckError(HRESULT hr);
#define OGL_CHECKERROR OGL_CheckError();
#define D3D_CHECKERROR(hr) D3D_CheckError(hr);
#else
#define OGL_CHECKERROR (void)(0);
#define D3D_CHECKERROR(hr) (void)(0);
#endif
// ATI's TRUFORM support
// set truform parameters
extern void gfxSetTruform( const INDEX iLevel, BOOL bLinearNormals);
extern void (*gfxEnableTruform)( void);
extern void (*gfxDisableTruform)(void);
// set D3D vertex shader only if different than last time
extern void d3dSetVertexShader(DWORD dwHandle);
// macro for releasing D3D objects
#define D3DRELEASE(object,check) \
{ \
INDEX ref; \
do { \
ref = (object)->Release(); \
if(check) ASSERT(ref==0); \
} while(ref>0); \
object = NONE; \
}