mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-10-05 23:44:51 +02:00
24cb244d43
This was a _ton_ of changes, made 15 years ago, so there are probably some problems to work out still. Among others: Engine/Base/Stream.* was mostly abandoned and will need to be re-ported. Still, this is a pretty good start, and probably holds a world record for lines of changes or something. :)
560 lines
20 KiB
C++
560 lines
20 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
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#include "Engine/StdH.h"
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#include <Engine/Graphics/GfxLibrary.h>
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#include <Engine/Base/Translation.h>
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#include <Engine/Base/ErrorReporting.h>
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#include <Engine/Base/Memory.h>
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#include <Engine/Base/Console.h>
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#include <Engine/Graphics/ViewPort.h>
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#include <Engine/Graphics/MultiMonitor.h>
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#include <Engine/Templates/DynamicContainer.cpp>
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#include <Engine/Templates/Stock_CTextureData.h>
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#include <Engine/Base/ListIterator.inl>
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extern INDEX ogl_iTBufferEffect;
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extern INDEX ogl_iTBufferSamples;
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// fog/haze textures
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extern ULONG _fog_ulTexture;
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extern ULONG _haze_ulTexture;
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// change control
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extern INDEX GFX_ctVertices;
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// attributes for t-buffer
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int aiAttribList[] = {
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WGL_DRAW_TO_WINDOW_EXT, TRUE,
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WGL_SUPPORT_OPENGL_EXT, TRUE,
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WGL_DOUBLE_BUFFER_EXT, TRUE,
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WGL_PIXEL_TYPE_EXT, WGL_TYPE_RGBA_EXT,
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WGL_COLOR_BITS_EXT, 16,
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WGL_DEPTH_BITS_EXT, 16,
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WGL_SAMPLE_BUFFERS_3DFX, 1,
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WGL_SAMPLES_3DFX, 4,
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0, 0
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};
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int *piAttribList = aiAttribList;
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// engine's internal opengl state variables
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extern BOOL GFX_bDepthTest;
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extern BOOL GFX_bDepthWrite;
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extern BOOL GFX_bAlphaTest;
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extern BOOL GFX_bBlending;
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extern BOOL GFX_bDithering;
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extern BOOL GFX_bClipping;
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extern BOOL GFX_bClipPlane;
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extern BOOL GFX_bColorArray;
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extern BOOL GFX_bFrontFace;
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extern BOOL GFX_bTruform;
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extern INDEX GFX_iActiveTexUnit;
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extern FLOAT GFX_fMinDepthRange;
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extern FLOAT GFX_fMaxDepthRange;
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extern GfxBlend GFX_eBlendSrc;
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extern GfxBlend GFX_eBlendDst;
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extern GfxComp GFX_eDepthFunc;
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extern GfxFace GFX_eCullFace;
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extern INDEX GFX_iTexModulation[GFX_MAXTEXUNITS];
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BOOL glbUsingVARs = FALSE; // vertex_array_range
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// define gl function pointers
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#define DLLFUNCTION(dll, output, name, inputs, params, required) \
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output (__stdcall *p##name) inputs = NULL;
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#include "gl_functions.h"
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#undef DLLFUNCTION
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// extensions
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void (__stdcall *pglLockArraysEXT)(GLint first, GLsizei count) = NULL;
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void (__stdcall *pglUnlockArraysEXT)(void) = NULL;
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GLboolean (__stdcall *pwglSwapIntervalEXT)(GLint interval) = NULL;
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GLint (__stdcall *pwglGetSwapIntervalEXT)(void) = NULL;
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void (__stdcall *pglActiveTextureARB)(GLenum texunit) = NULL;
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void (__stdcall *pglClientActiveTextureARB)(GLenum texunit) = NULL;
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// t-buffer support
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#ifdef PLATFORM_WIN32
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char *(__stdcall *pwglGetExtensionsStringARB)(HDC hdc);
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BOOL (__stdcall *pwglChoosePixelFormatARB)(HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
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BOOL (__stdcall *pwglGetPixelFormatAttribivARB)(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, int *piAttributes, int *piValues);
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#endif
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void (__stdcall *pglTBufferMask3DFX)(GLuint mask);
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// NV occlusion query
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void (__stdcall *pglGenOcclusionQueriesNV)( GLsizei n, GLuint *ids);
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void (__stdcall *pglDeleteOcclusionQueriesNV)( GLsizei n, const GLuint *ids);
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void (__stdcall *pglBeginOcclusionQueryNV)( GLuint id);
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void (__stdcall *pglEndOcclusionQueryNV)(void);
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void (__stdcall *pglGetOcclusionQueryivNV)( GLuint id, GLenum pname, GLint *params);
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void (__stdcall *pglGetOcclusionQueryuivNV)( GLuint id, GLenum pname, GLuint *params);
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GLboolean (__stdcall *pglIsOcclusionQueryNV)( GLuint id);
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// ATI GL_ATI_pn_triangles
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void (__stdcall *pglPNTrianglesiATI)( GLenum pname, GLint param);
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void (__stdcall *pglPNTrianglesfATI)( GLenum pname, GLfloat param);
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// test if an extension exists
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static BOOL HasExtension( const char *strAllExtensions, const char *strExtension)
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{
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// find substring
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const char *strFound = strstr( strAllExtensions, strExtension);
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// no extension if not found
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if( strFound==NULL) return FALSE;
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INDEX iExtensionLen = strlen(strExtension);
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// if found substring is substring of some other extension
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if( strFound[iExtensionLen]!=' ' && strFound[iExtensionLen]!=0) {
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// continue searching after that char
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return HasExtension( strFound+iExtensionLen, strExtension);
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}
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// extension found
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return TRUE;
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}
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// add OpenGL extensions to engine
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void CGfxLibrary::AddExtension_OGL( ULONG ulFlag, const char *strName)
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{
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gl_ulFlags = (gl_ulFlags & ~ulFlag) | ulFlag;
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go_strSupportedExtensions += strName;
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go_strSupportedExtensions += " ";
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}
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// determine OpenGL extensions that engine supports
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void CGfxLibrary::TestExtension_OGL( ULONG ulFlag, const char *strName)
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{
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if( HasExtension( go_strExtensions, strName)) AddExtension_OGL( ulFlag, strName);
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}
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// prepares OpenGL drawing context
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void CGfxLibrary::InitContext_OGL(void)
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{
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// must have context
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ASSERT( gl_pvpActive!=NULL);
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// reset engine's internal OpenGL state variables
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extern BOOL GFX_abTexture[GFX_MAXTEXUNITS];
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for( INDEX iUnit=0; iUnit<GFX_MAXTEXUNITS; iUnit++) {
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GFX_abTexture[iUnit] = FALSE;
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GFX_iTexModulation[iUnit] = 1;
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}
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// set default texture unit and modulation mode
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GFX_iActiveTexUnit = 0;
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gl_ctMaxStreams = 16; // GL always has enough "streams" for multi-texturing
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// reset frustum/ortho stuff
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extern BOOL GFX_bViewMatrix;
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extern FLOAT GFX_fLastL, GFX_fLastR, GFX_fLastT, GFX_fLastB, GFX_fLastN, GFX_fLastF;
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GFX_fLastL = GFX_fLastR = GFX_fLastT = GFX_fLastB = GFX_fLastN = GFX_fLastF = 0;
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GFX_bViewMatrix = TRUE;
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glbUsingVARs = FALSE;
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GFX_bTruform = FALSE;
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GFX_bClipping = TRUE;
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pglEnable( GL_TEXTURE_2D); GFX_abTexture[0] = TRUE;
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pglEnable( GL_DITHER); GFX_bDithering = TRUE;
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pglDisable( GL_BLEND); GFX_bBlending = FALSE;
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pglDisable( GL_DEPTH_TEST); GFX_bDepthTest = FALSE;
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pglDisable( GL_ALPHA_TEST); GFX_bAlphaTest = FALSE;
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pglDisable( GL_CLIP_PLANE0); GFX_bClipPlane = FALSE;
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pglDisable( GL_CULL_FACE); GFX_eCullFace = GFX_NONE;
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pglFrontFace( GL_CCW); GFX_bFrontFace = TRUE;
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pglDepthMask( GL_FALSE); GFX_bDepthWrite = FALSE;
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pglDepthFunc( GL_LEQUAL); GFX_eDepthFunc = GFX_LESS_EQUAL;
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pglBlendFunc( GL_ONE, GL_ONE); GFX_eBlendSrc = GFX_eBlendDst = GFX_ONE;
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pglDepthRange( 0.0f, 1.0f); GFX_fMinDepthRange = 0.0f;
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GFX_fMaxDepthRange = 1.0f;
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// (re)set some OpenGL defaults
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gfxPolygonMode( GFX_FILL);
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pglFrontFace( GL_CCW);
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pglShadeModel( GL_SMOOTH);
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pglEnable( GL_SCISSOR_TEST);
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pglDrawBuffer( GL_BACK);
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pglAlphaFunc( GL_GEQUAL, 0.5f);
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pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f);
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pglMatrixMode( GL_MODELVIEW);
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pglLoadIdentity();
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pglMatrixMode( GL_TEXTURE);
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pglLoadIdentity();
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// enable rendering only thru vertex arrays by default
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pglEnableClientState( GL_VERTEX_ARRAY);
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pglDisableClientState( GL_NORMAL_ARRAY);
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pglDisableClientState( GL_TEXTURE_COORD_ARRAY);
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pglDisableClientState( GL_COLOR_ARRAY);
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GFX_bColorArray = FALSE;
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// set single byte pixel alignment
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pglPixelStorei( GL_PACK_ALIGNMENT, 1);
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pglPixelStorei( GL_UNPACK_ALIGNMENT, 1);
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// TEST EXTENSIONS
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CDisplayAdapter &da = gl_gaAPI[GAT_OGL].ga_adaAdapter[gl_iCurrentAdapter];
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da.da_strVendor = (const char*)pglGetString(GL_VENDOR);
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da.da_strRenderer = (const char*)pglGetString(GL_RENDERER);
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da.da_strVersion = (const char*)pglGetString(GL_VERSION);
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go_strExtensions = (const char*)pglGetString(GL_EXTENSIONS);
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// report
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CPrintF( TRANS("\n* OpenGL context created: *----------------------------------\n"));
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CPrintF( " (%s, %s, %s)\n\n", (const char *) da.da_strVendor, (const char *) da.da_strRenderer, (const char *) da.da_strVersion);
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// test for used extensions
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GLint gliRet;
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GLfloat glfRet;
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go_strSupportedExtensions = "";
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// check for WGL extensions, too
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go_strWinExtensions = "";
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#ifdef PLATFORM_WIN32
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pwglGetExtensionsStringARB = (char* (__stdcall*)(HDC))pwglGetProcAddress("wglGetExtensionsStringARB");
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if( pwglGetExtensionsStringARB != NULL) {
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AddExtension_OGL( NONE, "WGL_ARB_extensions_string"); // register
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CTempDC tdc(gl_pvpActive->vp_hWnd);
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go_strWinExtensions = (char*)pwglGetExtensionsStringARB(tdc.hdc);
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}
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#endif
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// multitexture is supported only thru GL_EXT_texture_env_combine extension
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gl_ctTextureUnits = 1;
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gl_ctRealTextureUnits = 1;
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pglActiveTextureARB = NULL;
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pglClientActiveTextureARB = NULL;
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// This renders badly on the current Intel Macs...my bug, probably. !!! FIXME
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#if PLATFORM_MACOSX
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CPrintF("Forcibly disabled multitexturing for now on Mac OS X.");
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#else
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if( HasExtension( go_strExtensions, "GL_ARB_multitexture")) {
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pglGetIntegerv( GL_MAX_TEXTURE_UNITS_ARB, (int*)&gl_ctRealTextureUnits); // get number of texture units
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if( gl_ctRealTextureUnits>1 && (HasExtension( go_strExtensions, "GL_EXT_texture_env_combine") || HasExtension( go_strExtensions, "GL_ARB_texture_env_combine")) ) {
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AddExtension_OGL( NONE, "GL_ARB_multitexture");
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AddExtension_OGL( NONE, "GL_EXT_texture_env_combine");
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pglActiveTextureARB = (void (__stdcall*)(GLenum))OGL_GetProcAddress( "glActiveTextureARB");
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pglClientActiveTextureARB = (void (__stdcall*)(GLenum))OGL_GetProcAddress( "glClientActiveTextureARB");
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ASSERT( pglActiveTextureARB!=NULL && pglClientActiveTextureARB!=NULL);
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gl_ctTextureUnits = Min( GFX_MAXTEXUNITS, gl_ctRealTextureUnits);
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} else {
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CPrintF( TRANS(" GL_TEXTURE_ENV_COMBINE extension missing - multi-texturing cannot be used.\n"));
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}
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}
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#endif
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// find all supported texture compression extensions
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TestExtension_OGL( GLF_EXTC_ARB, "GL_ARB_texture_compression");
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TestExtension_OGL( GLF_EXTC_S3TC, "GL_EXT_texture_compression_s3tc");
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TestExtension_OGL( GLF_EXTC_FXT1, "GL_3DFX_texture_compression_FXT1");
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TestExtension_OGL( GLF_EXTC_LEGACY, "GL_S3_s3tc");
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// mark if there is at least one extension present
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gl_ulFlags &= ~GLF_TEXTURECOMPRESSION;
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if( (gl_ulFlags&GLF_EXTC_ARB) || (gl_ulFlags&GLF_EXTC_FXT1)
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|| (gl_ulFlags&GLF_EXTC_S3TC) || (gl_ulFlags&GLF_EXTC_LEGACY)) {
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gl_ulFlags |= GLF_TEXTURECOMPRESSION;
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}
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// determine max supported dimension of texture
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pglGetIntegerv( GL_MAX_TEXTURE_SIZE, (GLint*)&gl_pixMaxTextureDimension);
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OGL_CHECKERROR;
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// determine support for texture LOD biasing
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gl_fMaxTextureLODBias = 0.0f;
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if( HasExtension( go_strExtensions, "GL_EXT_texture_lod_bias")) {
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AddExtension_OGL( NONE, "GL_EXT_texture_lod_bias"); // register
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// check max possible lod bias (absolute)
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pglGetFloatv( GL_MAX_TEXTURE_LOD_BIAS_EXT, &glfRet);
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GLenum gleError = pglGetError(); // just because of invalid extension implementations (S3)
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if( gleError || glfRet<0.1f || glfRet>4.0f) glfRet = 4.0f;
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gl_fMaxTextureLODBias = glfRet;
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OGL_CHECKERROR;
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}
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// determine support for anisotropic filtering
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gl_iMaxTextureAnisotropy = 1;
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if( HasExtension( go_strExtensions, "GL_EXT_texture_filter_anisotropic")) {
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AddExtension_OGL( NONE, "GL_EXT_texture_filter_anisotropic"); // register
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// keep max allowed anisotropy degree
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pglGetIntegerv( GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gliRet);
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gl_iMaxTextureAnisotropy = gliRet;
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OGL_CHECKERROR;
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}
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// check support for compiled vertex arrays
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pglLockArraysEXT = NULL;
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pglUnlockArraysEXT = NULL;
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if( HasExtension( go_strExtensions, "GL_EXT_compiled_vertex_array")) {
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AddExtension_OGL( GLF_EXT_COMPILEDVERTEXARRAY, "GL_EXT_compiled_vertex_array");
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pglLockArraysEXT = (void (__stdcall*)(GLint,GLsizei))OGL_GetProcAddress( "glLockArraysEXT");
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pglUnlockArraysEXT = (void (__stdcall*)(void) )OGL_GetProcAddress( "glUnlockArraysEXT");
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ASSERT( pglLockArraysEXT!=NULL && pglUnlockArraysEXT!=NULL);
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}
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// check support for swap interval
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pwglSwapIntervalEXT = NULL;
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pwglGetSwapIntervalEXT = NULL;
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if( HasExtension( go_strExtensions, "WGL_EXT_swap_control")) {
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AddExtension_OGL( GLF_VSYNC, "WGL_EXT_swap_control");
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pwglSwapIntervalEXT = (GLboolean (__stdcall*)(GLint))OGL_GetProcAddress( "wglSwapIntervalEXT");
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pwglGetSwapIntervalEXT = (GLint (__stdcall*)(void) )OGL_GetProcAddress( "wglGetSwapIntervalEXT");
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ASSERT( pwglSwapIntervalEXT!=NULL && pwglGetSwapIntervalEXT!=NULL);
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}
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// determine support for ATI Truform technology
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extern INDEX truform_iLevel;
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extern BOOL truform_bLinear;
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truform_iLevel = -1;
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truform_bLinear = FALSE;
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pglPNTrianglesiATI = NULL;
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pglPNTrianglesfATI = NULL;
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gl_iTessellationLevel = 0;
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gl_iMaxTessellationLevel = 0;
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if( HasExtension( go_strExtensions, "GL_ATI_pn_triangles")) {
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AddExtension_OGL( NONE, "GL_ATI_pn_triangles");
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pglPNTrianglesiATI = (void (__stdcall*)(GLenum,GLint ))OGL_GetProcAddress( "glPNTrianglesiATI");
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pglPNTrianglesfATI = (void (__stdcall*)(GLenum,GLfloat))OGL_GetProcAddress( "glPNTrianglesfATI");
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ASSERT( pglPNTrianglesiATI!=NULL && pglPNTrianglesfATI!=NULL);
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// check max possible tessellation
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pglGetIntegerv( GL_MAX_PN_TRIANGLES_TESSELATION_LEVEL_ATI, &gliRet);
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gl_iMaxTessellationLevel = gliRet;
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OGL_CHECKERROR;
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}
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#ifdef PLATFORM_WIN32
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// if T-buffer is supported
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if( _TBCapability) {
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// add extension and disable t-buffer usage by default
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AddExtension_OGL( GLF_EXT_TBUFFER, "GL_3DFX_multisample");
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pglDisable( GL_MULTISAMPLE_3DFX);
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OGL_CHECKERROR;
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}
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#endif
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// test for clamp to edge
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TestExtension_OGL( GLF_EXT_EDGECLAMP, "GL_EXT_texture_edge_clamp");
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// test for clip volume hint
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TestExtension_OGL( GLF_EXT_CLIPHINT, "GL_EXT_clip_volume_hint");
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/*
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// test for occlusion culling
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TestExtension_OGL( GLF_EXT_OCCLUSIONTEST, "GL_HP_occlusion_test");
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pglGenOcclusionQueriesNV = NULL; pglDeleteOcclusionQueriesNV = NULL;
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pglBeginOcclusionQueryNV = NULL; pglEndOcclusionQueryNV = NULL;
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pglGetOcclusionQueryivNV = NULL; pglGetOcclusionQueryuivNV = NULL;
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pglIsOcclusionQueryNV = NULL;
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if( HasExtension( go_strExtensions, "GL_NV_occlusion_query"))
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{ // prepare extension's functions
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AddExtension_OGL( GLF_EXT_OCCLUSIONQUERY, "GL_NV_occlusion_query");
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pglGenOcclusionQueriesNV = (void (__stdcall*)(GLsizei, GLuint*))pwglGetProcAddress( "glGenOcclusionQueriesNV");
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pglDeleteOcclusionQueriesNV = (void (__stdcall*)(GLsizei, const GLuint*))pwglGetProcAddress( "glDeleteOcclusionQueriesNV");
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pglBeginOcclusionQueryNV = (void (__stdcall*)(GLuint))pwglGetProcAddress( "glBeginOcclusionQueryNV");
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pglEndOcclusionQueryNV = (void (__stdcall*)(void))pwglGetProcAddress( "glEndOcclusionQueryNV");
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pglGetOcclusionQueryivNV = (void (__stdcall*)(GLuint, GLenum, GLint*))pwglGetProcAddress( "glGetOcclusionQueryivNV");
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pglGetOcclusionQueryuivNV = (void (__stdcall*)(GLuint, GLenum, GLuint*))pwglGetProcAddress( "glGetOcclusionQueryuivNV");
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pglIsOcclusionQueryNV = (GLboolean (__stdcall*)(GLuint))pwglGetProcAddress( "glIsOcclusionQueryNV");
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ASSERT( pglGenOcclusionQueriesNV!=NULL && pglDeleteOcclusionQueriesNV!=NULL
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&& pglBeginOcclusionQueryNV!=NULL && pglEndOcclusionQueryNV!=NULL
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&& pglGetOcclusionQueryivNV!=NULL && pglGetOcclusionQueryuivNV!=NULL
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&& pglIsOcclusionQueryNV!=NULL);
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}
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*/
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// done with seeking for supported extensions
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if( go_strSupportedExtensions=="") go_strSupportedExtensions = "none";
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// allocate vertex buffers
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// eglAdjustVertexBuffers(ogl_iVertexBufferSize*1024);
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// OGL_CHECKERROR;
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// check if 32-bit textures are supported
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GLuint uiTmpTex;
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const ULONG ulTmpTex = 0xFFFFFFFF;
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pglGenTextures( 1, &uiTmpTex);
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pglBindTexture( GL_TEXTURE_2D, uiTmpTex);
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pglTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, 1,1, 0, GL_RGBA, GL_UNSIGNED_BYTE, &ulTmpTex);
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OGL_CHECKERROR;
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gl_ulFlags &= ~GLF_32BITTEXTURES;
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pglGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_GREEN_SIZE, &gliRet);
|
|
if( gliRet==8) gl_ulFlags |= GLF_32BITTEXTURES;
|
|
pglDeleteTextures( 1, &uiTmpTex);
|
|
OGL_CHECKERROR;
|
|
|
|
// setup fog and haze textures
|
|
extern PIX _fog_pixSizeH;
|
|
extern PIX _fog_pixSizeL;
|
|
extern PIX _haze_pixSize;
|
|
pglGenTextures( 1, (GLuint*)&_fog_ulTexture);
|
|
pglGenTextures( 1, (GLuint*)&_haze_ulTexture);
|
|
_fog_pixSizeH = 0;
|
|
_fog_pixSizeL = 0;
|
|
_haze_pixSize = 0;
|
|
OGL_CHECKERROR;
|
|
|
|
// prepare pattern texture
|
|
extern CTexParams _tpPattern;
|
|
extern ULONG _ulPatternTexture;
|
|
extern ULONG _ulLastUploadedPattern;
|
|
pglGenTextures( 1, (GLuint*)&_ulPatternTexture);
|
|
_ulLastUploadedPattern = 0;
|
|
_tpPattern.Clear();
|
|
|
|
// reset texture filtering and array locking
|
|
_tpGlobal[0].Clear();
|
|
_tpGlobal[1].Clear();
|
|
_tpGlobal[2].Clear();
|
|
_tpGlobal[3].Clear();
|
|
GFX_ctVertices = 0;
|
|
gl_dwVertexShader = NONE;
|
|
|
|
// set default texture filtering/biasing
|
|
extern INDEX gap_iTextureFiltering;
|
|
extern INDEX gap_iTextureAnisotropy;
|
|
extern FLOAT gap_fTextureLODBias;
|
|
gfxSetTextureFiltering( gap_iTextureFiltering, gap_iTextureAnisotropy);
|
|
gfxSetTextureBiasing( gap_fTextureLODBias);
|
|
|
|
// mark pretouching and probing
|
|
extern BOOL _bNeedPretouch;
|
|
_bNeedPretouch = TRUE;
|
|
gl_bAllowProbing = FALSE;
|
|
|
|
// update console system vars
|
|
extern void UpdateGfxSysCVars(void);
|
|
UpdateGfxSysCVars();
|
|
|
|
// reload all loaded textures and eventually shadows
|
|
extern INDEX shd_bCacheAll;
|
|
extern void ReloadTextures(void);
|
|
extern void CacheShadows(void);
|
|
ReloadTextures();
|
|
if( shd_bCacheAll) CacheShadows();
|
|
}
|
|
|
|
|
|
// initialize OpenGL driver
|
|
BOOL CGfxLibrary::InitDriver_OGL( BOOL b3Dfx/*=FALSE*/)
|
|
{
|
|
ASSERT( gl_hiDriver==NONE);
|
|
UINT iOldErrorMode = SetErrorMode( SEM_NOOPENFILEERRORBOX|SEM_FAILCRITICALERRORS);
|
|
CTString strDriverFileName = b3Dfx ? "3DFXVGL.DLL" : "OPENGL32.DLL";
|
|
|
|
try
|
|
{ // if driver doesn't exists on disk
|
|
char strBuffer[_MAX_PATH+1];
|
|
char *strDummy;
|
|
int iRes = SearchPathA( NULL, strDriverFileName, NULL, _MAX_PATH, strBuffer, &strDummy);
|
|
if( iRes==0) ThrowF_t(TRANS("OpenGL driver '%s' not present"), strDriverFileName);
|
|
|
|
// load opengl library
|
|
gl_hiDriver = ::LoadLibraryA( strDriverFileName);
|
|
// if it cannot be loaded (although it is present on disk)
|
|
if( gl_hiDriver==NONE) {
|
|
// if it is 3dfx stand-alone driver
|
|
if( b3Dfx) {
|
|
// do a fatal error and inform user to deinstall it,
|
|
// since this loading attempt probably messed up the entire system
|
|
FatalError(TRANS( "3Dfx OpenGL driver '%s' is installed, but cannot be loaded!\n"
|
|
"If you previously had a 3Dfx card and it was removed,\n"
|
|
"please deinstall the driver and restart windows before\n"
|
|
"continuing.\n"), strDriverFileName);
|
|
} // fail!
|
|
ThrowF_t(TRANS("Cannot load OpenGL driver '%s'"), strDriverFileName);
|
|
}
|
|
// prepare functions
|
|
OGL_SetFunctionPointers_t(gl_hiDriver);
|
|
}
|
|
catch( char *strError)
|
|
{ // didn't make it :(
|
|
if( gl_hiDriver!=NONE) FreeLibrary(gl_hiDriver);
|
|
gl_hiDriver = NONE;
|
|
CPrintF( TRANS("Error starting OpenGL: %s\n"), strError);
|
|
SetErrorMode(iOldErrorMode);
|
|
return FALSE;
|
|
}
|
|
|
|
// revert to old error mode
|
|
SetErrorMode(iOldErrorMode);
|
|
|
|
// if default driver
|
|
if( !b3Dfx) {
|
|
// use GDI functions
|
|
pwglSwapBuffers = ::SwapBuffers;
|
|
pwglSetPixelFormat = ::SetPixelFormat;
|
|
pwglChoosePixelFormat = ::ChoosePixelFormat;
|
|
// NOTE:
|
|
// some ICD implementations are not infact in OPENGL32.DLL, but in some
|
|
// other installed DLL, which is loaded when original OPENGL32.DLL from MS is
|
|
// loaded. For those, we in fact load OPENGL32.DLL from MS, so we must _not_
|
|
// call these functions directly, because they are in MS dll. We must call
|
|
// functions from GDI, which in turn call either OPENGL32.DLL, _or_ the client driver,
|
|
// as appropriate.
|
|
}
|
|
// done
|
|
return TRUE;
|
|
}
|
|
|
|
static void ClearFunctionPointers(void)
|
|
{
|
|
// clear gl function pointers
|
|
#define DLLFUNCTION(dll, output, name, inputs, params, required) p##name = NULL;
|
|
#include "gl_functions.h"
|
|
#undef DLLFUNCTION
|
|
}
|
|
|
|
|
|
// shutdown OpenGL driver
|
|
void CGfxLibrary::EndDriver_OGL(void)
|
|
{
|
|
// unbind all textures
|
|
if( _pTextureStock!=NULL) {
|
|
{FOREACHINDYNAMICCONTAINER( _pTextureStock->st_ctObjects, CTextureData, ittd) {
|
|
CTextureData &td = *ittd;
|
|
td.td_tpLocal.Clear();
|
|
td.Unbind();
|
|
}}
|
|
} // unbind fog/haze
|
|
gfxDeleteTexture( _fog_ulTexture);
|
|
gfxDeleteTexture( _haze_ulTexture);
|
|
|
|
PlatformEndDriver_OGL();
|
|
ClearFunctionPointers();
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* 3dfx t-buffer control
|
|
*/
|
|
|
|
|
|
extern void SetTBufferEffect( BOOL bEnable)
|
|
{
|
|
// adjust console vars
|
|
ogl_iTBufferEffect = Clamp( ogl_iTBufferEffect, 0L, 2L);
|
|
ogl_iTBufferSamples = (1L) << FastLog2(ogl_iTBufferSamples);
|
|
if( ogl_iTBufferSamples<2) ogl_iTBufferSamples = 4;
|
|
// if supported
|
|
if( _pGfx->gl_ulFlags&GLF_EXT_TBUFFER)
|
|
{ // disable multisampling if not required
|
|
ASSERT( pglTBufferMask3DFX!=NULL);
|
|
if( ogl_iTBufferEffect==0 || _pGfx->go_ctSampleBuffers<2 || !bEnable) pglDisable( GL_MULTISAMPLE_3DFX);
|
|
else {
|
|
pglEnable( GL_MULTISAMPLE_3DFX);
|
|
UINT uiMask = 0xFFFFFFFF;
|
|
// set one buffer in case of motion-blur
|
|
if( ogl_iTBufferEffect==2) uiMask = (1UL) << _pGfx->go_iCurrentWriteBuffer;
|
|
//pglTBufferMask3DFX(uiMask);
|
|
}
|
|
}
|
|
}
|