mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-10-05 23:44:51 +02:00
221 lines
8.9 KiB
C++
221 lines
8.9 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of version 2 of the GNU General Public License as published by
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the Free Software Foundation
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
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#ifndef SE_INCL_TEXTURE_H
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#define SE_INCL_TEXTURE_H
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#ifdef PRAGMA_ONCE
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#pragma once
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#endif
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#include <Engine/Base/Lists.h>
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#include <Engine/Base/Anim.h>
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#include <Engine/Graphics/GfxLibrary.h>
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#define BYTES_PER_TEXEL 4 // all textures in engine are 4 bytes per pixel
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// td_ulFlags bits
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// (on disk and in memory)
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#define TEX_ALPHACHANNEL (1UL<<0) // texture has alpha channel (for old version support)
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#define TEX_32BIT (1UL<<1) // texture needs to be in 32-bit quality uploaded if can
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// (only in memory)
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#define TEX_STATIC (1UL<<5) // remain loaded after being bound (i.e. uploaded - for base textures)
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#define TEX_CONSTANT (1UL<<6) // cannot be changed (no mip-map disposing, no LOD biasing, no colorizing, nothing!)
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#define TEX_TRANSPARENT (1UL<<7) // only one bit of alpha channel is enough (internal format GL_RGB5_A1)
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#define TEX_EQUALIZED (1UL<<8) // texture has 128-gray last mipmap (i.e. can be discarded in shade mode)
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#define TEX_GRAY (1UL<<9) // grayscale texture
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#define TEX_WHITE (1UL<<10) // completely white texture (believe me, there are some cases)
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#define TEX_KEEPCOLOR (1UL<<11) // don't (de)saturate (for heightmaps and such!)
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#define TEX_SINGLEMIPMAP (1UL<<18) // set if last uploading was in single-mipmap
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#define TEX_PROBED (1UL<<19) // set if last binding was as probe-texture
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// (flags that shows if texture mipmaps has been changed)
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#define TEX_DISPOSED (1UL<<20) // largest mip-map(s) has been left-out
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#define TEX_DITHERED (1UL<<21) // dithering has been applied on this texture
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#define TEX_FILTERED (1UL<<22) // flitering has been applied on this texture
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#define TEX_SATURATED (1UL<<23) // saturation has been adjusted on this texture
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#define TEX_COLORIZED (1UL<<24) // mipmaps has been colorized on this texture
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#define TEX_WASOLD (1UL<<30) // loaded from old format (version 3)
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/*
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* Bitmap data for a class of texture objects
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*/
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class ENGINE_API CTextureData : public CAnimData {
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public:
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// implementation:
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ULONG td_ulFlags; // see defines
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MEX td_mexWidth, td_mexHeight; // texture dimensions
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INDEX td_iFirstMipLevel; // the highest quality mip level
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INDEX td_ctFineMipLevels; // number of bilineary created mip levels
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SLONG td_slFrameSize; // sum of sizes of all mip-maps for one frame
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INDEX td_ctFrames; // number of different frames
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class CTexParams td_tpLocal; // local texture parameters
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ULONG td_ulInternalFormat; // format in which texture will be uploaded
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CTimerValue td_tvLastDrawn; // timer for probing
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ULONG td_ulProbeObject;
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union {
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ULONG td_ulObject;
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ULONG *td_pulObjects;
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};
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ULONG *td_pulFrames; // all frames with their mip-maps and private palettes
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UBYTE *td_pubBuffer1, *td_pubBuffer2; // buffers for effect textures
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PIX td_pixBufferWidth, td_pixBufferHeight; // effect buffer dimensions
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class CTextureData *td_ptdBaseTexture; // base texure for effects (if any)
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class CTextureEffectGlobal *td_ptegEffect; // all data for effect textures
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INDEX td_iRenderFrame; // frame number currently rendering (for profiling)
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// constructor and destructor
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CTextureData();
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~CTextureData();
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// reference counting (override from CAnimData)
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void RemReference_internal(void);
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// converts global mip level to the corresponding one of texture
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INDEX ClampMipLevel( FLOAT fMipFactor) const;
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// gets values from some of texture data members
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inline MEX GetWidth(void) const { return td_mexWidth; };
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inline MEX GetHeight(void) const { return td_mexHeight; };
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inline PIX GetPixWidth(void) const { return td_mexWidth >>td_iFirstMipLevel; };
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inline PIX GetPixHeight(void) const { return td_mexHeight>>td_iFirstMipLevel; };
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inline ULONG GetFlags(void) const { return td_ulFlags; };
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inline ULONG GetNoOfMips(void) const { return GetNoOfMipmaps( GetPixWidth(), GetPixHeight()); };
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inline ULONG GetNoOfFineMips(void) const { return td_ctFineMipLevels; };
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// mark that texture has been used
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inline void MarkDrawn(void) { td_tvLastDrawn = _pTimer->GetHighPrecisionTimer(); };
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// get string description of texture size, mips and parameters
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CTString GetDescription(void);
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// sets new texture mex width and changes height remaining texture's aspect ratio
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inline void ChangeSize( MEX mexNewWidth) {
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td_mexHeight = MEX( ((FLOAT)mexNewWidth)/td_mexWidth * td_mexHeight);
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td_mexWidth = mexNewWidth;
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};
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// check if texture frame(s) has been somehow altered (dithering, filtering, saturation, colorizing...)
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inline BOOL IsModified(void) {
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return td_ulFlags & (TEX_DISPOSED|TEX_DITHERED|TEX_FILTERED|TEX_SATURATED|TEX_COLORIZED);
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};
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// export finest mipmap of one texture's frame to imageinfo
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void Export_t( class CImageInfo &iiExportedImage, INDEX iFrame);
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// set texture frame as current for accelerator (this will upload texture that needs or wants uploading)
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void SetAsCurrent( INDEX iFrameNo=0, BOOL bForceUpload=FALSE);
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// creates new effect texture with one frame
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void CreateEffectTexture( PIX pixWidth, PIX pixHeight, MEX mexWidth,
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CTextureData *ptdBaseTexture, ULONG ulGlobalEffect);
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// creates new texture with one frame
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void Create_t( const CImageInfo *pII, MEX mexWanted, INDEX ctFineMips, BOOL bForce32bit);
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// adds one frame to created texture
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void AddFrame_t( const CImageInfo *pII);
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// remove texture from gfx API (driver)
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void Unbind(void);
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// free memory allocated for texture
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void Clear(void);
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// read texture from file
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void Read_t( CTStream *inFile);
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// write texture to file
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void Write_t( CTStream *outFile);
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// force texture to be re-loaded (if needed) in corresponding manner
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void Force( ULONG ulTexFlags);
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// get texel from texture's largest mip-map
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COLOR GetTexel( MEX mexU, MEX mexV);
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// copy (and eventually convert to floats) one row from texture to an array (iChannel is 1=R,2=G,3=B,4=A)
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void FetchRow( PIX pixRow, void *pfDst, INDEX iChannel=4, BOOL bConvertToFloat=TRUE);
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// get pointer to one row of texture
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ULONG *GetRowPointer( PIX pixRow);
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// overridden from CSerial:
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// check if this kind of objects is auto-freed
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virtual BOOL IsAutoFreed(void);
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// get amount of memory used by this object
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virtual SLONG GetUsedMemory(void);
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};
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/*
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* An instance of a texture object
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*/
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class ENGINE_API CTextureObject : public CAnimObject {
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// implementation:
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public:
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// interface:
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public:
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CTextureObject(void);
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// copy from another object of same class
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void Copy(CTextureObject &toOther);
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MEX GetWidth(void) const;
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MEX GetHeight(void) const;
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ULONG GetFlags(void) const;
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void Read_t( CTStream *istrFile); // throw char * // read and
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void Write_t( CTStream *ostrFile); // throw char * // write functions
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// obtain texture and set it for this object
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void SetData_t(const CTFileName &fnmTexture); // throw char *
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// get filename of texture or empty string if no texture
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const CTFileName &GetName(void);
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};
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ENGINE_API extern void CreateTexture_t( const CTFileName &inFileName,
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MEX inMex, INDEX inMipmaps, BOOL bForce32bit);
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ENGINE_API extern void CreateTexture_t( const CTFileName &inFileName, const CTFileName &outFileName,
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MEX inMex, INDEX inMipmaps, BOOL bForce32bit);
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ENGINE_API extern void ProcessScript_t( const CTFileName &inFileName);
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/*
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* Render-to-texture class
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*/
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/*
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class ENGINE_API CRenderTexture
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{
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// implementation:
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public:
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CListNode rt_lnInGfx // for linking in list of all renderable textures
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ULONG rt_ulFlags; // see defines (only alpha and 32bit, for now)
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PIX tt_pixWidth, rt_pixHeight; // texture dimensions
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ULONG td_ulInternalFormat; // format in which texture will be uploaded
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ULONG *rt_pulImage; // image in memory (no mipmaps for now!)
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class CTexParams td_tpLocal; // local texture parameters
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// interface:
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public:
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CRenderTexture(void);
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~CRenderTexture(void);
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// prepare
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BOOL Init( PIX pixWidth, PIX pixHeight, BOOL b32bit, BOOL bAlpha=FALSE);
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// reset (i.e. prepare again - after display mode switch and stuff like that)
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void Reset(void);
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// set texture as current for accelerator
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void SetAsCurrent(void);
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// set texture as target for rendering
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void SetAsTarget(void);
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};
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*/
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#endif /* include-once check. */
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