raze-gles/polymer/eduke32/build/include/polymost.h
helixhorned 1e5549dc2f Polymost: r_npotwallmode, emulating 8-bit for walls w/ nonpow2 height textures.
When that mode is enabled (see below for caveats), wall textures that have a
non-power-of-two height (call it 'h') will be modified to look like in classic:
Let 'H' be the next power of two greater than 'h'. The texture will be uploaded
with height 'H', made up from 'h' hlines of the original texture, followed by
'H'-'h' first hlines of the same.
No panning "corrections" will take place. The mode is disabled by default.

Caveats/notes:
 * the mode requires that r_hightile is disabled
 * it is not implemented in Polymer
 * in the Lunatic build, it is ineffective when a VX map is loaded, as those
   display walls with NPOT height textures correctly

git-svn-id: https://svn.eduke32.com/eduke32@4498 1a8010ca-5511-0410-912e-c29ae57300e0
2014-06-01 11:55:19 +00:00

235 lines
7.5 KiB
C

#ifndef _polymost_h_
# define _polymost_h_
#ifdef USE_OPENGL
#include "glbuild.h"
#include "hightile.h"
typedef struct { char r, g, b, a; } coltype;
extern int32_t rendmode;
extern float gtang;
extern float glox1, gloy1;
extern double gxyaspect, grhalfxdown10x;
extern double gcosang, gsinang, gcosang2, gsinang2;
extern double gchang, gshang, gctang, gstang, gvisibility;
struct glfiltermodes {
const char *name;
int32_t min,mag;
};
#define NUMGLFILTERMODES 6
extern struct glfiltermodes glfiltermodes[NUMGLFILTERMODES];
//void phex(char v, char *s);
void uploadtexture(int32_t doalloc, int32_t xsiz, int32_t ysiz, int32_t intexfmt, int32_t texfmt, coltype *pic, int32_t tsizx, int32_t tsizy, int32_t dameth);
void polymost_drawsprite(int32_t snum);
void polymost_drawmaskwall(int32_t damaskwallcnt);
void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16_t picnum,
int8_t dashade, char dapalnum, int32_t dastat, uint8_t daalpha, int32_t cx1, int32_t cy1, int32_t cx2, int32_t cy2, int32_t uniqid);
void polymost_fillpolygon(int32_t npoints);
void polymost_initosdfuncs(void);
void polymost_drawrooms(void);
void polymost_glinit(void);
void polymost_glreset(void);
enum {
INVALIDATE_ALL,
INVALIDATE_ART
};
void gltexinvalidate(int32_t dapicnum, int32_t dapalnum, int32_t dameth);
void gltexinvalidatetype(int32_t type);
int32_t polymost_printext256(int32_t xpos, int32_t ypos, int16_t col, int16_t backcol, const char *name, char fontsize);
extern float curpolygonoffset;
extern float shadescale;
extern int32_t shadescale_unbounded;
extern float alphahackarray[MAXTILES];
extern int32_t r_usenewshading;
extern int32_t r_usetileshades;
extern int32_t r_npotwallmode;
extern int16_t globalpicnum;
extern int32_t globalpal;
// Compare with polymer_eligible_for_artmap()
static inline int32_t eligible_for_tileshades(int32_t picnum, int32_t pal)
{
return (!usehightile || !hicfindsubst(picnum, pal, 0)) &&
(!usemodels || md_tilehasmodel(picnum, pal) < 0);
}
static inline float getshadefactor(int32_t shade)
{
int32_t shadebound = (shadescale_unbounded || shade>=numshades) ? numshades : numshades-1;
float clamped_shade = min(max(shade*shadescale, 0), shadebound);
// 8-bit tiles, i.e. non-hightiles and non-models, don't get additional
// glColor() shading with r_usetileshades!
if (getrendermode() == REND_POLYMOST && r_usetileshades &&
eligible_for_tileshades(globalpicnum, globalpal))
return 1.f;
return ((float)(numshades-clamped_shade))/(float)numshades;
}
#define POLYMOST_CHOOSE_FOG_PAL(fogpal, pal) \
((fogpal) ? (fogpal) : (pal))
static inline int32_t get_floor_fogpal(const sectortype *sec)
{
return POLYMOST_CHOOSE_FOG_PAL(sec->fogpal, sec->floorpal);
}
static inline int32_t get_ceiling_fogpal(const sectortype *sec)
{
return POLYMOST_CHOOSE_FOG_PAL(sec->fogpal, sec->ceilingpal);
}
static inline int32_t fogpal_shade(const sectortype *sec, int32_t shade)
{
// When fogging is due to sector[].fogpal, don't make the fog parameters
// depend on the shade of the object.
return sec->fogpal ? 0 : shade;
}
static inline int check_nonpow2(int32_t x)
{
return (x > 1 && (x&(x-1)));
}
// Are we using the mode that uploads non-power-of-two wall textures like they
// render in classic?
static inline int polymost_is_npotmode(void)
{
// The glinfo.texnpot check is so we don't have to deal with that case in
// gloadtile_art().
return glinfo.texnpot &&
// r_npotwallmode is NYI for hightiles. We require r_hightile off
// because in calc_ypanning(), the repeat would be multiplied by a
// factor even if no modified texture were loaded.
!usehightile &&
#ifdef NEW_MAP_FORMAT
g_loadedMapVersion < 10 &&
#endif
r_npotwallmode;
}
// Flags of the <dameth> argument of various functions
enum {
DAMETH_CLAMPED = 4,
DAMETH_WALL = 32, // signals a texture for a wall (for r_npotwallmode)
DAMETH_NOCOMPRESS = 4096,
DAMETH_HI = 8192,
};
// DAMETH_CLAMPED -> PTH_CLAMPED conversion
#define TO_PTH_CLAMPED(dameth) ((((dameth)&4))>>2)
// Do we want a NPOT-y-as-classic texture for this <dameth> and <ysiz>?
static inline int polymost_want_npotytex(int32_t dameth, int32_t ysiz)
{
return getrendermode() != REND_POLYMER && // r_npotwallmode NYI in Polymer
polymost_is_npotmode() && (dameth&DAMETH_WALL) && check_nonpow2(ysiz);
}
// pthtyp pth->flags bits
enum {
PTH_CLAMPED = 1,
PTH_HIGHTILE = 2,
PTH_SKYBOX = 4,
PTH_HASALPHA = 8,
PTH_HASFULLBRIGHT = 16,
PTH_NPOTWALL = DAMETH_WALL, // r_npotwallmode=1 generated texture
PTH_INVALIDATED = 128,
};
typedef struct pthtyp_t
{
struct pthtyp_t *next;
uint32_t glpic;
int16_t picnum;
char palnum;
char shade;
char effects;
char flags; // 1 = clamped (dameth&4), 2 = hightile, 4 = skybox face, 8 = hasalpha, 16 = hasfullbright, 128 = invalidated
char skyface;
hicreplctyp *hicr;
uint16_t sizx, sizy;
float scalex, scaley;
struct pthtyp_t *ofb; // only fullbright
} pthtyp;
extern void gloadtile_art(int32_t,int32_t,int32_t,int32_t,pthtyp *,int32_t);
extern int32_t gloadtile_hi(int32_t,int32_t,int32_t,hicreplctyp *,int32_t,pthtyp *,int32_t,char);
extern int32_t globalnoeffect;
extern int32_t drawingskybox;
extern int32_t hicprecaching;
extern double gyxscale, gxyaspect, ghalfx, grhalfxdown10;
extern char ptempbuf[MAXWALLSB<<1];
static inline void polymost_setupdetailtexture(int32_t *texunits, int32_t tex)
{
bglActiveTextureARB(++*texunits);
bglEnable(GL_TEXTURE_2D);
bglBindTexture(GL_TEXTURE_2D, tex);
bglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
bglTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
bglTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 2.0f);
bglTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);
bglTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);
}
static inline void polymost_setupglowtexture(int32_t *texunits, int32_t tex)
{
bglActiveTextureARB(++*texunits);
bglEnable(GL_TEXTURE_2D);
bglBindTexture(GL_TEXTURE_2D, tex);
bglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_INTERPOLATE_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_ONE_MINUS_SRC_ALPHA);
bglTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
bglTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS_ARB);
bglTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
bglTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);
bglTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);
}
#include "texcache.h"
#endif
#endif