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Initial Commit
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Jeff Farrand
228
common/prboom/gl_intern.h
Executable file
228
common/prboom/gl_intern.h
Executable file
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/* Emacs style mode select -*- C++ -*-
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*-----------------------------------------------------------------------------
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*
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*
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* PrBoom: a Doom port merged with LxDoom and LSDLDoom
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* based on BOOM, a modified and improved DOOM engine
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* Copyright (C) 1999 by
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* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
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* Copyright (C) 1999-2000 by
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* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
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* Copyright 2005, 2006 by
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* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* DESCRIPTION:
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*
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*---------------------------------------------------------------------
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*/
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#ifndef _GL_INTERN_H
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#define _GL_INTERN_H
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typedef enum
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{
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GLDT_UNREGISTERED,
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GLDT_BROKEN,
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GLDT_PATCH,
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GLDT_TEXTURE,
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GLDT_FLAT
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} GLTexType;
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typedef struct
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{
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int index;
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int width,height;
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int leftoffset,topoffset;
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int tex_width,tex_height;
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int realtexwidth, realtexheight;
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int buffer_width,buffer_height;
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int buffer_size;
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GLuint glTexID[CR_LIMIT+MAXPLAYERS];
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GLTexType textype;
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boolean mipmap;
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} GLTexture;
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// JDC: moved these to header ---------------------------
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#define MAP_COEFF 128.0f
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#define MAP_SCALE (MAP_COEFF*(float)FRACUNIT)
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typedef struct
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{
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float x1,x2;
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float z1,z2;
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} GLSeg;
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#define GLDWF_TOP 1
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#define GLDWF_M1S 2
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#define GLDWF_M2S 3
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#define GLDWF_BOT 4
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#define GLDWF_SKY 5
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#define GLDWF_SKYFLIP 6
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typedef struct
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{
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GLSeg *glseg;
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float ytop,ybottom;
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float ul,ur,vt,vb;
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float light;
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float alpha;
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float skyymid;
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float skyyaw;
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GLTexture *gltexture;
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byte flag;
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#ifdef IPHONE
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side_t *side;
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#endif
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} GLWall;
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typedef struct
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{
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int sectornum;
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float light; // the lightlevel of the flat
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float uoffs,voffs; // the texture coordinates
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float z; // the z position of the flat (height)
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GLTexture *gltexture;
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boolean ceiling;
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} GLFlat;
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typedef struct
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{
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int cm;
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float x,y,z;
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float vt,vb;
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float ul,ur;
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float x1,y1;
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float x2,y2;
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float light;
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fixed_t scale;
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GLTexture *gltexture;
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boolean shadow;
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boolean trans;
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} GLSprite;
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typedef enum
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{
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GLDIT_NONE,
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GLDIT_WALL,
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GLDIT_FLAT,
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GLDIT_SPRITE
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} GLDrawItemType;
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typedef struct
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{
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GLDrawItemType itemtype;
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int itemcount;
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int firstitemindex;
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byte rendermarker;
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} GLDrawItem;
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typedef struct
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{
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GLWall *walls;
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int num_walls;
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int max_walls;
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GLFlat *flats;
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int num_flats;
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int max_flats;
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GLSprite *sprites;
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int num_sprites;
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int max_sprites;
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GLDrawItem *drawitems;
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int num_drawitems;
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int max_drawitems;
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} GLDrawInfo;
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extern GLDrawInfo gld_drawinfo;
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typedef struct
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{
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GLfloat x;
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GLfloat y;
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GLfloat z;
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} GLVertex;
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typedef struct
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{
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GLfloat u;
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GLfloat v;
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} GLTexcoord;
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/* GLLoopDef is the struct for one loop. A loop is a list of vertexes
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* for triangles, which is calculated by the gluTesselator in gld_PrecalculateSector
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* and in gld_PreprocessCarvedFlat
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*/
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typedef struct
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{
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GLenum mode; // GL_TRIANGLES, GL_TRIANGLE_STRIP or GL_TRIANGLE_FAN
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int vertexcount; // number of vertexes in this loop
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int vertexindex; // index into vertex list
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} GLLoopDef;
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// GLSector is the struct for a sector with a list of loops.
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typedef struct
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{
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int loopcount; // number of loops for this sector
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GLLoopDef *loops; // the loops itself
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} GLSector;
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extern GLSector *sectorloops;
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typedef struct drawVert_s { // JDC
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float xyz[3]; // TODO: adjust MAP_SCALE, make shorts
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float st[2]; // TODO: set texture matrix, make shorts
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unsigned char rgba[4];
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} drawVert_t;
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#define MAX_DRAW_VERTS 0x10000
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extern drawVert_t drawVerts[MAX_DRAW_VERTS];
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extern int numDrawVerts;
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//--------------------------------------
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extern int gld_max_texturesize;
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extern const char *gl_tex_format_string;
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extern int gl_tex_format;
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extern int gl_tex_filter;
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extern int gl_mipmap_filter;
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extern int gl_texture_filter_anisotropic;
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extern int gl_paletted_texture;
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extern int gl_shared_texture_palette;
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extern boolean use_mipmapping;
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extern int transparent_pal_index;
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extern unsigned char gld_palmap[256];
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extern GLTexture *last_gltexture;
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extern int last_cm;
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//e6y: in some cases textures with a zero index (NO_TEXTURE) should be registered
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GLTexture *gld_RegisterTexture(int texture_num, boolean mipmap, boolean force);
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void gld_BindTexture(GLTexture *gltexture);
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GLTexture *gld_RegisterPatch(int lump, int cm);
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void gld_BindPatch(GLTexture *gltexture, int cm);
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GLTexture *gld_RegisterFlat(int lump, boolean mipmap);
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void gld_BindFlat(GLTexture *gltexture);
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void gld_InitPalettedTextures(void);
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int gld_GetTexDimension(int value);
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void gld_SetTexturePalette(GLenum target);
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void gld_Precache(void);
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extern PFNGLCOLORTABLEEXTPROC gld_ColorTableEXT;
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#endif // _GL_INTERN_H
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