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https://github.com/DrBeef/ioq3quest.git
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350b8f9c7c
GL_CLAMP (clamp to border) was changed to GL_CLAMP_TO_EDGE in 2008 (f2baf359). In 2018 (ce1d5406) I made OpenGL 1.2 be required since GL_CLAMP_TO_EDGE is used. Restore support for GL_CLAMP in order to support OpenGL 1.1 like vanilla Quake 3 does. This should allow using the default Microsoft Windows GDI Generic OpenGL 1.1 driver (untested but it won't fail the version check at least). From gpuinfo.org, it looks like drivers stopped advertising support for GL_SGIS_texture_edge_clamp so use a version check in addition to the extension check. r_allowExtensions 0 disables using GL_CLAMP_TO_EDGE in the opengl1 renderer. GL_CLAMP support wasn't added to the opengl2 renderer.
171 lines
5.8 KiB
C
171 lines
5.8 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, 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
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along with Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#ifndef TR_COMMON_H
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#define TR_COMMON_H
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#include "../qcommon/q_shared.h"
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#include "../renderercommon/tr_public.h"
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#include "qgl.h"
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typedef enum
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{
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IMGTYPE_COLORALPHA, // for color, lightmap, diffuse, and specular
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IMGTYPE_NORMAL,
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IMGTYPE_NORMALHEIGHT,
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IMGTYPE_DELUXE, // normals are swizzled, deluxe are not
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} imgType_t;
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typedef enum
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{
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IMGFLAG_NONE = 0x0000,
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IMGFLAG_MIPMAP = 0x0001,
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IMGFLAG_PICMIP = 0x0002,
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IMGFLAG_CUBEMAP = 0x0004,
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IMGFLAG_NO_COMPRESSION = 0x0010,
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IMGFLAG_NOLIGHTSCALE = 0x0020,
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IMGFLAG_CLAMPTOEDGE = 0x0040,
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IMGFLAG_GENNORMALMAP = 0x0080,
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} imgFlags_t;
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typedef struct image_s {
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char imgName[MAX_QPATH]; // game path, including extension
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int width, height; // source image
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int uploadWidth, uploadHeight; // after power of two and picmip but not including clamp to MAX_TEXTURE_SIZE
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GLuint texnum; // gl texture binding
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int frameUsed; // for texture usage in frame statistics
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int internalFormat;
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int TMU; // only needed for voodoo2
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imgType_t type;
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imgFlags_t flags;
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struct image_s* next;
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} image_t;
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// any change in the LIGHTMAP_* defines here MUST be reflected in
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// R_FindShader() in tr_bsp.c
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#define LIGHTMAP_2D -4 // shader is for 2D rendering
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#define LIGHTMAP_BY_VERTEX -3 // pre-lit triangle models
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#define LIGHTMAP_WHITEIMAGE -2
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#define LIGHTMAP_NONE -1
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extern refimport_t ri;
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extern glconfig_t glConfig; // outside of TR since it shouldn't be cleared during ref re-init
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// These variables should live inside glConfig but can't because of
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// compatibility issues to the original ID vms. If you release a stand-alone
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// game and your mod uses tr_types.h from this build you can safely move them
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// to the glconfig_t struct.
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extern qboolean textureFilterAnisotropic;
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extern int maxAnisotropy;
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extern float displayAspect;
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extern qboolean haveClampToEdge;
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//
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// cvars
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//
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extern cvar_t *r_stencilbits; // number of desired stencil bits
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extern cvar_t *r_depthbits; // number of desired depth bits
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extern cvar_t *r_colorbits; // number of desired color bits, only relevant for fullscreen
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extern cvar_t *r_texturebits; // number of desired texture bits
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extern cvar_t *r_ext_multisample;
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// 0 = use framebuffer depth
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// 16 = use 16-bit textures
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// 32 = use 32-bit textures
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// all else = error
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extern cvar_t *r_mode; // video mode
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extern cvar_t *r_noborder;
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extern cvar_t *r_fullscreen;
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extern cvar_t *r_ignorehwgamma; // overrides hardware gamma capabilities
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extern cvar_t *r_drawBuffer;
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extern cvar_t *r_swapInterval;
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extern cvar_t *r_allowExtensions; // global enable/disable of OpenGL extensions
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extern cvar_t *r_ext_compressed_textures; // these control use of specific extensions
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extern cvar_t *r_ext_multitexture;
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extern cvar_t *r_ext_compiled_vertex_array;
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extern cvar_t *r_ext_texture_env_add;
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extern cvar_t *r_ext_texture_filter_anisotropic;
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extern cvar_t *r_ext_max_anisotropy;
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extern cvar_t *r_stereoEnabled;
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extern cvar_t *r_saveFontData;
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qboolean R_GetModeInfo( int *width, int *height, float *windowAspect, int mode );
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float R_NoiseGet4f( float x, float y, float z, double t );
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void R_NoiseInit( void );
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image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags );
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image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgType_t type, imgFlags_t flags, int internalFormat );
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void R_IssuePendingRenderCommands( void );
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qhandle_t RE_RegisterShaderLightMap( const char *name, int lightmapIndex );
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qhandle_t RE_RegisterShader( const char *name );
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qhandle_t RE_RegisterShaderNoMip( const char *name );
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qhandle_t RE_RegisterShaderFromImage(const char *name, int lightmapIndex, image_t *image, qboolean mipRawImage);
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// font stuff
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void R_InitFreeType( void );
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void R_DoneFreeType( void );
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void RE_RegisterFont(const char *fontName, int pointSize, fontInfo_t *font);
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/*
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=============================================================
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IMAGE LOADERS
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=============================================================
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*/
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void R_LoadBMP( const char *name, byte **pic, int *width, int *height );
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void R_LoadJPG( const char *name, byte **pic, int *width, int *height );
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void R_LoadPCX( const char *name, byte **pic, int *width, int *height );
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void R_LoadPNG( const char *name, byte **pic, int *width, int *height );
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void R_LoadTGA( const char *name, byte **pic, int *width, int *height );
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/*
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====================================================================
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IMPLEMENTATION SPECIFIC FUNCTIONS
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====================================================================
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*/
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void GLimp_Init( qboolean fixedFunction );
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void GLimp_Shutdown( void );
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void GLimp_EndFrame( void );
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void GLimp_LogComment( char *comment );
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void GLimp_Minimize(void);
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void GLimp_SetGamma( unsigned char red[256],
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unsigned char green[256],
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unsigned char blue[256] );
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#endif
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