mirror of
https://github.com/ptitSeb/Serious-Engine
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371 lines
15 KiB
C++
371 lines
15 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_GFXLIBRARY_H
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#define SE_INCL_GFXLIBRARY_H
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#ifdef PRAGMA_ONCE
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#pragma once
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#endif
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#ifdef SE1_D3D
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#include <d3d8.h>
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#endif // SE1_D3D
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#include <Engine/Base/Timer.h>
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#include <Engine/Base/CTString.h>
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#include <Engine/Base/Lists.h>
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#include <Engine/Math/Functions.h>
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#include <Engine/Graphics/Adapter.h>
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#include <Engine/Graphics/Vertex.h>
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// common element arrays
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extern CStaticStackArray<GFXVertex> _avtxCommon;
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extern CStaticStackArray<GFXTexCoord> _atexCommon;
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extern CStaticStackArray<GFXColor> _acolCommon;
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extern CStaticStackArray<INDEX> _aiCommonElements;
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extern CStaticStackArray<INDEX> _aiCommonQuads;
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#include <Engine/Graphics/OpenGL.h>
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#include <Engine/Graphics/Gfx_wrapper.h>
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#include <Engine/Base/DynamicLoader.h>
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// WARNING: Changing these constants breaks inline asm on GNU systems!
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#define SQRTTABLESIZE 8192
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#define SQRTTABLESIZELOG2 13
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#define GFX_MAXTEXUNITS (4) // maximum number of supported texture units for multitexturing
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#define GFX_MINSTREAMS (3) // minimum number of D3D streams in order to support HW T&L
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#define GFX_MAXLAYERS (5) // suggested maximum number of multi-passes per one polygon
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// D3D vertex for simple draw functions
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struct CTVERTEX {
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FLOAT fX,fY,fZ; // position
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ULONG ulColor; // color
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FLOAT fU,fV; // texture coordinates
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};
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#ifdef SE1_D3D
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#define D3DFVF_CTVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
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#endif
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// Gfx API type
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enum GfxAPIType
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{
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GAT_NONE = -1, // no gfx API (gfx functions are disabled)
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GAT_OGL = 0, // OpenGL
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#ifdef SE1_D3D
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GAT_D3D = 1, // Direct3D
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#endif // SE1_D3D
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GAT_CURRENT = 9, // current API
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};
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__forceinline bool GfxValidApi(GfxAPIType eAPI)
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{
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#ifdef SE1_D3D
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return(eAPI==GAT_OGL || eAPI==GAT_D3D || eAPI==GAT_NONE);
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#else
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return(eAPI==GAT_OGL || eAPI==GAT_NONE);
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#endif
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}
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// vertex type (for lock/unlock function)
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enum VtxType
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{
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VXT_LOC = 1, // x,y,z location
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VXT_NOR = 2, // normal
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VXT_TEX = 3, // texture coords
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VXT_COL = 4, // color
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};
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// common flags
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#define GLF_HASACCELERATION (1UL<<0) // set if current mode supports hardware acceleration
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#define GLF_INITONNEXTWINDOW (1UL<<1) // initialize rendering context on next window
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#define GLF_ADJUSTABLEGAMMA (1UL<<2) // set if display allows gamma adjustment
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#define GLF_TEXTURECOMPRESSION (1UL<<3) // set if texture compression is supported
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#define GLF_32BITTEXTURES (1UL<<4) // 32-bit textures
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#define GLF_VSYNC (1UL<<5) // supports wait for VSYNC
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#define GLF_FULLSCREEN (1UL<<9) // currently in full-screen mode
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// Direct3D specific
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#define GLF_D3D_HASHWTNL (1UL<<10) // supports hardware T&L
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#define GLF_D3D_USINGHWTNL (1UL<<11) // using hardware T&L
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#define GLF_D3D_CLIPPLANE (1UL<<12) // supports at least one custom clip plane
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#define GLF_D3D_COLORWRITES (1UL<<13) // supports enable/disable writes to color buffer
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#define GLF_D3D_ZBIAS (1UL<<14) // supports z-biasing
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// OpenGL extensions (part of flags!)
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#define GLF_EXT_TBUFFER (1UL<<19) // 3DFX's T-Buffer (for partial FSAA & Motion-blur effects)
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#define GLF_EXT_EDGECLAMP (1UL<<20) // GL_EXT_texture_edge_clamp
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#define GLF_EXT_COMPILEDVERTEXARRAY (1UL<<21) // GL_EXT_compiled_vertex_array
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#define GLF_EXT_CLIPHINT (1UL<<22) // GL_EXT_clip_volume_hint
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#define GLF_EXT_OCCLUSIONTEST (1UL<<23) // GL_HP_occlusion_test
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#define GLF_EXT_OCCLUSIONQUERY (1UL<<24) // GL_NV_occlusion_query
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#define GLF_EXTC_ARB (1UL<<27) // GL_ARB_texture_compression
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#define GLF_EXTC_S3TC (1UL<<28) // GL_EXT_texture_compression_s3tc
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#define GLF_EXTC_FXT1 (1UL<<29) // GL_3DFX_texture_compression_FXT1
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#define GLF_EXTC_LEGACY (1UL<<30) // GL_S3_s3tc
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/*
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* Graphics library object.
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*/
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class ENGINE_API CGfxLibrary
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{
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public:
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CGfxAPI gl_gaAPI[2];
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CViewPort *gl_pvpActive; // active viewport
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CDynamicLoader *gl_hiDriver; // DLL handle
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GfxAPIType gl_eCurrentAPI; // (0=none, 1=OpenGL, 2=DirectX8)
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CDisplayMode gl_dmCurrentDisplayMode;
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INDEX gl_iCurrentAdapter;
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INDEX gl_iCurrentDepth;
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INDEX gl_ctDriverChanges; // count of driver changes
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ULONG gl_ulFlags;
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#ifdef SE1_D3D
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// DirectX info
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LPDIRECT3D8 gl_pD3D; // used to create the D3DDevice
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LPDIRECT3DDEVICE8 gl_pd3dDevice; // rendering device
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D3DFORMAT gl_d3dColorFormat; // current color format
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D3DFORMAT gl_d3dDepthFormat; // z-buffer depth format
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// DirectX vertex/index buffers
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LPDIRECT3DVERTEXBUFFER8 gl_pd3dVtx;
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LPDIRECT3DVERTEXBUFFER8 gl_pd3dNor;
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LPDIRECT3DVERTEXBUFFER8 gl_pd3dCol[GFX_MAXLAYERS];
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LPDIRECT3DVERTEXBUFFER8 gl_pd3dTex[GFX_MAXLAYERS];
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LPDIRECT3DINDEXBUFFER8 gl_pd3dIdx;
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#endif // SE1_D3D
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INDEX gl_ctVertices, gl_ctIndices; // size of buffers
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INDEX gl_ctColBuffers, gl_ctTexBuffers; // number of color and texture buffers (for multi-pass rendering)
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INDEX gl_ctMaxStreams; // maximum number of streams
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DWORD gl_dwVertexShader;
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// OpenGL info
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HGLRC go_hglRC; // rendering context
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CTString go_strExtensions; // reported extensions
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CTString go_strWinExtensions;
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CTString go_strSupportedExtensions; // supported extensions
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INDEX go_ctSampleBuffers; // number of rendering buffers currently on (for T-buffer's motion-blur effect) 0=not supported
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INDEX go_iCurrentWriteBuffer; // current buffer enabled for writing
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// common stuff
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PIX gl_pixMaxTextureDimension; // maximum allowed texture dimension by driver
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INDEX gl_iSwapInterval; // current swap interval (0=immediate, n=VSyncs to wait)
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INDEX gl_ctTextureUnits; // maximum supported texture units (1=no multitexturing)
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INDEX gl_ctRealTextureUnits; // maximum reported texture units
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FLOAT gl_fTextureLODBias; // current texture lod bias
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FLOAT gl_fMaxTextureLODBias; // absolute maximum possible texture lod bias (0 if biasing is not supported)
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INDEX gl_iMaxTextureAnisotropy; // maximum possible texture degree of anisotropy (1 if isotropic only)
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INDEX gl_iMaxTessellationLevel; // maximum possible truform tesselation level (0=no truform)
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INDEX gl_iTessellationLevel; // current tesselation level
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INDEX gl_iFrameNumber; // frame number currently rendering
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CTimerValue gl_tvFrameTime; // time when swapbuffer occured
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SLONG gl_slAllowedUploadBurst; // remain upload burst size for this frame (max texture or shadowmap size *2)
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CListHead gl_lhCachedShadows; // list of all cached shadowmaps
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CListHead gl_lhRenderTextures; // list of all render-textures
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BOOL gl_bAllowProbing;
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// for profiling
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INDEX gl_ctWorldTriangles; // how many world polygons were rendered in last frame
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INDEX gl_ctModelTriangles; // how many model polygons were rendered in last frame
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INDEX gl_ctParticleTriangles; // how many particle polygons were rendered in last frame
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INDEX gl_ctTotalTriangles; // total = (world & lensflares) + (model & shadows) + particle + 2D
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private:
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void InitAPIs(void);
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// start full-screen or windowed mode (pixSizeI=pixSizeJ=0 & iAdapter=0 if windowed)
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BOOL StartDisplayMode( enum GfxAPIType eAPI, INDEX iAdapter, PIX pixSizeI, PIX pixSizeJ,
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enum DisplayDepth eColorDepth);
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void StopDisplayMode(void);
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// OpenGL specific
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void *OGL_GetProcAddress(const char *procname); // rcg10112001
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BOOL InitDriver_OGL( BOOL b3Dfx=FALSE); // DLL init and function call adjustments
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void EndDriver_OGL(void);
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void PlatformEndDriver_OGL(void); // rcg10112001
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void TestExtension_OGL( ULONG ulFlag, const char *strName); // if exist, add OpenGL extension to flag and list
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void AddExtension_OGL( ULONG ulFlag, const char *strName); // unconditionally add OpenGL extension to flag and list
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BOOL CreateContext_OGL( HDC hdc);
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BOOL SetupPixelFormat_OGL( HDC hdc, BOOL bReport=FALSE);
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void InitContext_OGL(void);
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BOOL SetCurrentViewport_OGL( CViewPort *pvp);
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void UploadPattern_OGL( ULONG ulPatternEven);
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void SwapBuffers_OGL( CViewPort *pvpToSwap);
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// Direct3D specific
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#ifdef SE1_D3D
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BOOL InitDriver_D3D(void);
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void EndDriver_D3D(void);
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BOOL InitDisplay_D3D( INDEX iAdapter, PIX pixSizeI, PIX pixSizeJ, enum DisplayDepth eColorDepth);
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void InitContext_D3D(void);
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BOOL SetCurrentViewport_D3D( CViewPort *pvp);
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void UploadPattern_D3D( ULONG ulPatternEven);
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void SwapBuffers_D3D( CViewPort *pvpToSwap);
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#endif
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public:
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// common
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CGfxLibrary(); // init cvars
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~CGfxLibrary(); // clean up
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// optimize memory used by cached shadow maps
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void ReduceShadows(void);
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// pretouch all textures and cached shadowmaps
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void PretouchIfNeeded(void);
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// get array of all supported display modes (do not modify array!)
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CDisplayMode *EnumDisplayModes( INDEX &ctModes, enum GfxAPIType eAPI=GAT_CURRENT, INDEX iAdapter=0);
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// set viewport for rendering
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BOOL SetCurrentViewport( CViewPort *pvp);
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// swap buffers in a viewport
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void SwapBuffers( CViewPort *pvpToSwap);
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// return current frame number
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inline INDEX GetFrameNumber(void) { return gl_iFrameNumber; };
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// lock/unlock raster for drawing
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BOOL LockRaster( CRaster *praToLock);
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void UnlockRaster( CRaster *praToUnlock);
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// lock/unlock drawport for drawing
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BOOL LockDrawPort( CDrawPort *pdpToLock);
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void UnlockDrawPort( CDrawPort *pdpToUnlock);
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// initialize library
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void Init(void);
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// set new display mode
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BOOL SetDisplayMode( enum GfxAPIType eAPI, INDEX iAdapter, PIX pixSizeI, PIX pixSizeJ,
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enum DisplayDepth eColorDepth);
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// set display mode to original desktop display mode (and eventually change API)
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BOOL ResetDisplayMode( enum GfxAPIType eAPI=GAT_CURRENT);
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// get current API/adapter/display mode
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inline enum GfxAPIType GetCurrentAPI(void) { return gl_eCurrentAPI; };
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inline INDEX GetCurrentAdapter(void) { return gl_iCurrentAdapter; };
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inline void GetCurrentDisplayMode( CDisplayMode &dmCurrent) { dmCurrent = gl_dmCurrentDisplayMode; };
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// check if 3D acceleration is on
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inline BOOL IsCurrentModeAccelerated(void) { return (gl_ulFlags&GLF_HASACCELERATION); };
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// check if DualHead is on
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inline BOOL IsCurrentModeDH(void) { return gl_dmCurrentDisplayMode.IsDualHead(); };
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// is API supported
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inline BOOL HasAPI( enum GfxAPIType eAPI) {
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if( eAPI==GAT_CURRENT) return TRUE;
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if( eAPI==GAT_OGL) return (gl_gaAPI[0].ga_ctAdapters>0);
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#ifdef SE1_D3D
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if( eAPI==GAT_D3D) return (gl_gaAPI[1].ga_ctAdapters>0);
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#endif // SE1_D3D
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return FALSE;
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};
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// canvas functions
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void CreateWindowCanvas( void *hWnd, CViewPort **ppvpNew, CDrawPort **ppdpNew); // Create a new window canvas
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void DestroyWindowCanvas( CViewPort *pvpOld); // Destroy a window canvas
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void CreateWorkCanvas( PIX pixWidth, PIX pixHeight, CDrawPort **ppdpNew); // Create a work canvas
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void DestroyWorkCanvas( CDrawPort *pdpOld); // Destroy a work canvas
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// simple benchmark routine
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void Benchmark( CViewPort *pvp, CDrawPort *pdp);
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};
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struct MipmapTable {
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INDEX mmt_ctMipmaps; // number of mip-maps
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SLONG mmt_slTotalSize; // total size of all mip-maps (in pixels)
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PIX mmt_pixU; // size of first mip-map
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PIX mmt_pixV;
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SLONG mmt_aslOffsets[MAX_MEX_LOG2]; // offsets of each mip-map (in pixels)
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};
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// returns number of mip-maps to skip from original texture depending on maximum allowed texture
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// size (in pixels!) and maximum allowed texture dimension (in pixels, too!)
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extern INDEX ClampTextureSize( PIX pixClampSize, PIX pixClampDimension, PIX pixSizeU, PIX pixSizeV);
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// create mip-map table for texture or shadow of given dimensions
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extern void MakeMipmapTable( PIX pixU, PIX pixV, MipmapTable &mmt);
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// adds 8-bit opaque alpha channel to 24-bit bitmap (in place suported)
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extern void AddAlphaChannel( UBYTE *pubSrcBitmap, ULONG *pulDstBitmap, PIX pixSize, UBYTE *pubAlphaBitmap=NULL);
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// removes 8-bit alpha channel from 32-bit bitmap (in place suported)
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extern void RemoveAlphaChannel( ULONG *pulSrcBitmap, UBYTE *pubDstBitmap, PIX pixSize);
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// flips 24 or 32-bit bitmap (iType: 1-horizontal, 2-vertical, 3-diagonal) - in place supported
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extern void FlipBitmap( UBYTE *pubSrc, UBYTE *pubDst, PIX pixWidth, PIX pixHeight, INDEX iFlipType, BOOL bAlphaChannel);
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// makes ALL lower mipmaps (to size of Nx1 or 1xM) of a specified 32-bit bitmap with eventual filter appliance
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// this is done in-place! - all subsequent mip-maps will be posioned just after the original, input bitmap)
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// (only first ctFineMips number of mip-maps will be filtered with bilinear subsampling, while
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// all others will be downsampled with nearest-neighbour method with border preservance)
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extern void MakeMipmaps( INDEX ctFineMips, ULONG *pulMipmaps, PIX pixWidth, PIX pixHeight, INDEX iFilter=NONE);
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// colorize mipmaps
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extern void ColorizeMipmaps( INDEX i1stMipmapToColorize, ULONG *pulMipmaps, PIX pixWidth, PIX pixHeight);
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// performs dithering of a 32-bit bipmap (can be in-place)
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extern void DitherBitmap( INDEX iDitherType, ULONG *pulSrc, ULONG *pulDst, PIX pixWidth, PIX pixHeight,
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PIX pixCanvasWidth=0, PIX pixCanvasHeight=0);
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// performs dithering of a 32-bit mipmaps (can be in-place)
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extern void DitherMipmaps( INDEX iDitherType, ULONG *pulSrc, ULONG *pulDst, PIX pixWidth, PIX pixHeight);
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// adjust bitmap's saturation and/or hue (hue 0 and saturation 256 are defaults)
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extern void AdjustBitmapColor( ULONG *pulSrc, ULONG *pulDst, PIX pixWidth, PIX pixHeight,
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SLONG const slHueShift, SLONG const slSaturation);
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// applies filter to 32-bit bitmap (iFilter from -6 to 6; negative=sharpen, positive=blur, 0=none)
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extern void FilterBitmap( INDEX iFilter, ULONG *pulSrc, ULONG *pulDst, PIX pixWidth, PIX pixHeight,
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PIX pixCanvasWidth=0, PIX pixCanvasHeight=0);
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// retrives number of mip-maps for the given bitmap size
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__forceinline INDEX GetNoOfMipmaps( PIX pixWidth, PIX pixHeight) { return( FastLog2( Min(pixWidth, pixHeight))+1); }
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// retrives memory offset of a specified mip-map or a size of all mip-maps (IN PIXELS!)
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// (zero offset means first, i.e. largest mip-map)
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extern PIX GetMipmapOffset( INDEX iMipLevel, PIX pixWidth, PIX pixHeight);
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// return offset, pointer and dimensions of mipmap of specified size inside texture or shadowmap mipmaps
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extern INDEX GetMipmapOfSize( PIX pixSize, ULONG *&pulFrame, PIX &pixProbeWidth, PIX &pixProbeHeight);
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// flat white texture
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ENGINE_API extern CTextureData *_ptdFlat;
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// global texture parameters in engine
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ENGINE_API extern CTexParams _tpGlobal[GFX_MAXTEXUNITS];
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// pointer to global graphics library object
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ENGINE_API extern CGfxLibrary *_pGfx;
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// forced texture upload quality (0 = default, 16 = force 16-bit, 32 = force 32-bit)
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ENGINE_API extern INDEX _iTexForcedQuality;
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#endif /* include-once check. */
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