ref: 7436839e3df26d85827dc0cb16b90264ab9d5e38
dir: /ogl_def.h/
//**************************************************************************
//**
//** ogl_def.h
//**
//**************************************************************************
#ifndef __H2OPENGL__
#define __H2OPENGL__
#include "r_local.h"
#ifdef _WIN32
#include <windows.h>
#endif
#include <GL/gl.h>
/* whether to printf devel debug messages */
#define OPENGL_DEBUGGING 0
#if (OPENGL_DEBUGGING)
#define OGL_DEBUG printf
#else /* no debug msg : */
#if defined (__GNUC__) && !(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
#define OGL_DEBUG(fmt, args...) do {} while (0)
#else
#define OGL_DEBUG(fmt, ...) do {} while (0)
#endif
#endif
enum { VX, VY }; /* Vertex indices. */
typedef struct /* For dynamic lighting. */
{
int use;
mobj_t *thing;
float top, height;
} lumobj_t;
/* ScreenBits is currently unused. */
extern int screenWidth, screenHeight, screenBits;
void I_InitGraphics(void);
void I_ShutdownGraphics(void);
void OGL_InitRenderer(void);
void OGL_InitData(void);
void OGL_ResetData(void);
void OGL_SwitchTo3DState(void);
void OGL_Restore2DState(int step); /* Step 1: matrices, 2: attributes. */
void OGL_UseWhiteFog(int yes);
float PointDist2D(float c[2]);
void R_RenderSprite(vissprite_t *spr);
/* 2D drawing routines. */
void OGL_DrawPatch_CS(int x, int y, int lumpnum);
void OGL_DrawPatch(int x, int y, int lumpnum);
void OGL_DrawFuzzPatch(int x, int y, int lumpnum);
void OGL_DrawAltFuzzPatch(int x, int y, int lumpnum);
void OGL_DrawShadowedPatch(int x, int y, int lumpnum);
void OGL_DrawRawScreen(int lump); /* Raw screens are 320 x 200. */
void OGL_DrawRawScreenOfs(int lump, float offx, float offy);
void OGL_DrawLine(float x1, float y1, float x2, float y2, float r, float g, float b, float a);
void OGL_DrawRect(float x, float y, float w, float h, float r, float g, float b, float a);
void OGL_DrawRectTiled(int x, int y, int w, int h, int tw, int th);
void OGL_DrawCutRectTiled(int x, int y, int w, int h, int tw, int th, int cx, int cy, int cw, int ch);
void OGL_SetColor(int palidx);
void OGL_SetColorAndAlpha(float r, float g, float b, float a);
void OGL_DrawPSprite(int x, int y, float scale, int flip, int lump);
/* Filters. */
void OGL_SetFilter(int filter);
int OGL_DrawFilter(void);
void OGL_ShadeRect(int x, int y, int w, int h, float darkening);
/* ogl_tex.c */
typedef struct
{
unsigned short w, h;
short offx, offy;
unsigned short w2; /* For split textures, width of the other part. */
} texsize_t;
extern texsize_t *lumptexsizes; /* Sizes for all the lumps. */
extern unsigned short *spriteheights;
extern float texw, texh;
extern int texmask;
extern unsigned int curtex;
extern int pallump;
int FindNextPower2(int num);
float NextPower2Ratio(int num);
void OGL_TexInit(void);
void OGL_TexReset(void);
void OGL_ResetLumpTexData(void);
void OGL_SetPaletteLump(const char *palname);
void PalToRGB(byte *palidx, byte *rgb);
void PalIdxToRGB(byte *pal, int idx, byte *rgb);
unsigned int OGL_BindTexFlat(int lump);
void OGL_SetFlat(int idx);
void OGL_BindTexture(GLuint texname);
/* Returns the OpenGL texture name. */
GLuint OGL_PrepareTexture(int idx);
GLuint OGL_PrepareFlat(int idx); /* Returns the OpenGL name of the texture. */
GLuint OGL_PrepareLightTexture(void); /* The dynamic light map. */
void OGL_SetTexture(int idx);
unsigned int OGL_PrepareSky(int idx, boolean zeroMask);
void OGL_SetSprite(int pnum);
unsigned int OGL_PrepareSprite(int pnum);
void OGL_NewSplitTex(int lump, GLuint part2name);
GLuint OGL_GetOtherPart(int lump);
/* Part is either 1 or 2. Part 0 means only the left side is loaded.
* No splittex is created in that case. Once a raw image is loaded
* as part 0 it must be deleted before the other part is loaded at the
* next loading.
*/
void OGL_SetRawImage(int lump, int part);
void OGL_SetPatch(int lump); /* No mipmaps are generated. */
void OGL_SetNoTexture(void);
int OGL_GetLumpTexWidth(int lump);
int OGL_GetLumpTexHeight(int lump);
int OGL_ValidTexHeight2(int width, int height);
void OGL_UpdateTexParams(int mipmode);
void OGL_UpdateRawScreenParams(int smoothing);
/* ogl_scr.c */
typedef struct _TargaHeader
{
unsigned char id_length, colormap_type, image_type;
unsigned short colormap_index, colormap_length;
unsigned char colormap_size;
unsigned short x_origin, y_origin, width, height;
unsigned char pixel_size, attributes;
} TargaHeader;
void OGL_GrabScreen(void);
#include "m_bams.h"
/* ogl_clip.c */
typedef struct clipnode_s
{
int used; /* 1 if the node is in use. */
struct clipnode_s *prev, *next; /* Previous and and nodes. */
binangle start, end; /* The start and end angles (start < end). */
} clipnode_t;
extern clipnode_t *clipnodes; /* The list of clipnodes. */
extern clipnode_t *cliphead; /* The head node. */
void C_Init(void);
void C_Ranger(void);
void C_ClearRanges(void);
void C_SafeAddRange(binangle startAngle, binangle endAngle);
/* Add a segment relative to the current viewpoint. */
void C_AddViewRelSeg(float x1, float y1, float x2, float y2);
/* Check a segment relative to the current viewpoint. */
int C_CheckViewRelSeg(float x1, float y1, float x2, float y2);
/* Returns 1 if the specified angle is visible. */
int C_IsAngleVisible(binangle bang);
clipnode_t *C_AngleClippedBy(binangle bang);
/* Returns 1 if the subsector might be visible. */
int C_CheckSubsector(subsector_t *ssec);
/* ogl_sky.c */
/* Sky hemispheres. */
#define SKYHEMI_UPPER 0x1
#define SKYHEMI_LOWER 0x2
#define SKYHEMI_JUST_CAP 0x4 /* Just draw the top or bottom cap. */
typedef struct
{
float rgb[3]; /* The RGB values. */
short set, use; /* Is this set? Should be used? */
} fadeout_t;
void R_RenderSkyHemispheres(int hemis);
#endif /* __H2OPENGL__ */