#include "quakedef.h"#include "r_shared.h"#include "d_local.h" static int miplevel; float scale_for_mip;int screenwidth;int ubasestep, errorterm, erroradjustup, erroradjustdown;int vstartscan; // FIXME: should go awayextern void R_RotateBmodel (void);extern void R_TransformFrustum (void); vec3_t transformed_modelorg; /*==============D_DrawPoly ==============*/void D_DrawPoly (void){// this driver takes spans, not polygons} /*=============D_MipLevelForScale=============*/int D_MipLevelForScale (float scale){ int lmiplevel; if (scale >= d_scalemip[0] ) lmiplevel = 0; else if (scale >= d_scalemip[1] ) lmiplevel = 1; else if (scale >= d_scalemip[2] ) lmiplevel = 2; else lmiplevel = 3; if (lmiplevel < d_minmip) lmiplevel = d_minmip; return lmiplevel;} /*==============D_DrawSolidSurface==============*/ // FIXME: clean this up void D_DrawSolidSurface (surf_t *surf, int color){ espan_t *span; uint8_t *pdest; int u, u2, pix; pix = (color<<24) | (color<<16) | (color<<8) | color; for (span=surf->spans ; span ; span=span->pnext) { pdest = (uint8_t *)d_viewbuffer + screenwidth*span->v; u = span->u; u2 = span->u + span->count - 1; ((uint8_t *)pdest)[u] = pix; if (u2 - u < 8) { for (u++ ; u <= u2 ; u++) ((uint8_t *)pdest)[u] = pix; } else { for (u++ ; u & 3 ; u++) ((uint8_t *)pdest)[u] = pix; u2 -= 4; for ( ; u <= u2 ; u+=4) *(int *)((uint8_t *)pdest + u) = pix; u2 += 4; for ( ; u <= u2 ; u++) ((uint8_t *)pdest)[u] = pix; } }} /*==============D_CalcGradients==============*/void D_CalcGradients (msurface_t *pface){ float mipscale; vec3_t p_temp1; vec3_t p_saxis, p_taxis; float t; mipscale = 1.0 / (float)(1 << miplevel); TransformVector (pface->texinfo->vecs[0], p_saxis); TransformVector (pface->texinfo->vecs[1], p_taxis); t = xscaleinv * mipscale; d_sdivzstepu = p_saxis[0] * t; d_tdivzstepu = p_taxis[0] * t; t = yscaleinv * mipscale; d_sdivzstepv = -p_saxis[1] * t; d_tdivzstepv = -p_taxis[1] * t; d_sdivzorigin = p_saxis[2] * mipscale - xcenter * d_sdivzstepu - ycenter * d_sdivzstepv; d_tdivzorigin = p_taxis[2] * mipscale - xcenter * d_tdivzstepu - ycenter * d_tdivzstepv; VectorScale (transformed_modelorg, mipscale, p_temp1); t = 0x10000*mipscale; sadjust = ((fixed16_t)(DotProduct (p_temp1, p_saxis) * 0x10000 + 0.5)) - ((pface->texturemins[0] << 16) >> miplevel) + pface->texinfo->vecs[0][3]*t; tadjust = ((fixed16_t)(DotProduct (p_temp1, p_taxis) * 0x10000 + 0.5)) - ((pface->texturemins[1] << 16) >> miplevel) + pface->texinfo->vecs[1][3]*t; //// -1 (-epsilon) so we never wander off the edge of the texture// bbextents = ((pface->extents[0] << 16) >> miplevel) - 1; bbextentt = ((pface->extents[1] << 16) >> miplevel) - 1;} /*==============D_DrawSurfaces==============*/void D_DrawSurfaces (void){ surf_t *s; msurface_t *pface; surfcache_t *pcurrentcache; vec3_t world_transformed_modelorg; vec3_t local_modelorg; currententity = &cl_entities[0]; TransformVector (modelorg, transformed_modelorg); VectorCopy (transformed_modelorg, world_transformed_modelorg); // TODO: could preset a lot of this at mode set time if (r_drawflat.value) { for (s = &surfaces[1] ; s<surface_p ; s++) { if (!s->spans) continue; d_zistepu = s->d_zistepu; d_zistepv = s->d_zistepv; d_ziorigin = s->d_ziorigin; D_DrawSolidSurface (s, (uintptr_t)s->data & 0xFF); D_DrawZSpans (s->spans); } } else { for (s = &surfaces[1] ; s<surface_p ; s++) { if (!s->spans) continue; r_drawnpolycount++; d_zistepu = s->d_zistepu; d_zistepv = s->d_zistepv; d_ziorigin = s->d_ziorigin; if (s->flags & SURF_DRAWSKY) { if (!r_skymade) { R_MakeSky (); } D_DrawSkyScans8 (s->spans); D_DrawZSpans (s->spans); } else if (s->flags & SURF_DRAWBACKGROUND) { // set up a gradient for the background surface that places it // effectively at infinity distance from the viewpoint d_zistepu = 0; d_zistepv = 0; d_ziorigin = -0.9; D_DrawSolidSurface (s, (int)r_clearcolor.value & 0xFF); D_DrawZSpans (s->spans); } else if (s->flags & SURF_DRAWTURB) { pface = s->data; miplevel = 0; cacheblock = (pixel_t *) ((uint8_t *)pface->texinfo->texture + pface->texinfo->texture->offsets[0]); cachewidth = 64; if (s->insubmodel) { // FIXME: we don't want to do all this for every polygon! // TODO: store once at start of frame currententity = s->entity; //FIXME: make this passed in to // R_RotateBmodel () VectorSubtract (r_origin, currententity->origin, local_modelorg); TransformVector (local_modelorg, transformed_modelorg); R_RotateBmodel (); // FIXME: don't mess with the frustum, // make entity passed in } D_CalcGradients (pface); Turbulent8 (s->spans); D_DrawZSpans (s->spans); if (s->insubmodel) { // // restore the old drawing state // FIXME: we don't want to do this every time! // TODO: speed up // currententity = &cl_entities[0]; VectorCopy (world_transformed_modelorg, transformed_modelorg); VectorCopy (base_vpn, vpn); VectorCopy (base_vup, vup); VectorCopy (base_vright, vright); VectorCopy (base_modelorg, modelorg); R_TransformFrustum (); } } else { if (s->insubmodel) { // FIXME: we don't want to do all this for every polygon! // TODO: store once at start of frame currententity = s->entity; //FIXME: make this passed in to // R_RotateBmodel () VectorSubtract (r_origin, currententity->origin, local_modelorg); TransformVector (local_modelorg, transformed_modelorg); R_RotateBmodel (); // FIXME: don't mess with the frustum, // make entity passed in } pface = s->data; miplevel = D_MipLevelForScale (s->nearzi * scale_for_mip * pface->texinfo->mipadjust); // FIXME: make this passed in to D_CacheSurface pcurrentcache = D_CacheSurface (pface, miplevel); cacheblock = (pixel_t *)pcurrentcache->data; cachewidth = pcurrentcache->width; D_CalcGradients (pface); (*d_drawspans) (s->spans); D_DrawZSpans (s->spans); if (s->insubmodel) { // // restore the old drawing state // FIXME: we don't want to do this every time! // TODO: speed up // currententity = &cl_entities[0]; VectorCopy (world_transformed_modelorg, transformed_modelorg); VectorCopy (base_vpn, vpn); VectorCopy (base_vup, vup); VectorCopy (base_vright, vright); VectorCopy (base_modelorg, modelorg); R_TransformFrustum (); } } } }}
#include "quakedef.h"
#include "r_shared.h"
#include "d_local.h"
static int miplevel;
float scale_for_mip;
int screenwidth;
int ubasestep, errorterm, erroradjustup, erroradjustdown;
int vstartscan;
// FIXME: should go away
extern void R_RotateBmodel (void);
extern void R_TransformFrustum (void);
vec3_t transformed_modelorg;
/*
==============
D_DrawPoly
==============
*/
void D_DrawPoly (void)
{
// this driver takes spans, not polygons
}
/*
=============
D_MipLevelForScale
=============
*/
int D_MipLevelForScale (float scale)
{
int lmiplevel;
if (scale >= d_scalemip[0] )
lmiplevel = 0;
else if (scale >= d_scalemip[1] )
lmiplevel = 1;
else if (scale >= d_scalemip[2] )
lmiplevel = 2;
else
lmiplevel = 3;
if (lmiplevel < d_minmip)
lmiplevel = d_minmip;
return lmiplevel;
}
/*
==============
D_DrawSolidSurface
==============
*/
// FIXME: clean this up
void D_DrawSolidSurface (surf_t *surf, int color)
{
espan_t *span;
uint8_t *pdest;
int u, u2, pix;
pix = (color<<24) | (color<<16) | (color<<8) | color;
for (span=surf->spans ; span ; span=span->pnext)
{
pdest = (uint8_t *)d_viewbuffer + screenwidth*span->v;
u = span->u;
u2 = span->u + span->count - 1;
((uint8_t *)pdest)[u] = pix;
if (u2 - u < 8)
{
for (u++ ; u <= u2 ; u++)
((uint8_t *)pdest)[u] = pix;
}
else
{
for (u++ ; u & 3 ; u++)
((uint8_t *)pdest)[u] = pix;
u2 -= 4;
for ( ; u <= u2 ; u+=4)
*(int *)((uint8_t *)pdest + u) = pix;
u2 += 4;
for ( ; u <= u2 ; u++)
((uint8_t *)pdest)[u] = pix;
}
}
}
/*
==============
D_CalcGradients
==============
*/
void D_CalcGradients (msurface_t *pface)
{
float mipscale;
vec3_t p_temp1;
vec3_t p_saxis, p_taxis;
float t;
mipscale = 1.0 / (float)(1 << miplevel);
TransformVector (pface->texinfo->vecs[0], p_saxis);
TransformVector (pface->texinfo->vecs[1], p_taxis);
t = xscaleinv * mipscale;
d_sdivzstepu = p_saxis[0] * t;
d_tdivzstepu = p_taxis[0] * t;
t = yscaleinv * mipscale;
d_sdivzstepv = -p_saxis[1] * t;
d_tdivzstepv = -p_taxis[1] * t;
d_sdivzorigin = p_saxis[2] * mipscale - xcenter * d_sdivzstepu -
ycenter * d_sdivzstepv;
d_tdivzorigin = p_taxis[2] * mipscale - xcenter * d_tdivzstepu -
ycenter * d_tdivzstepv;
VectorScale (transformed_modelorg, mipscale, p_temp1);
t = 0x10000*mipscale;
sadjust = ((fixed16_t)(DotProduct (p_temp1, p_saxis) * 0x10000 + 0.5)) -
((pface->texturemins[0] << 16) >> miplevel)
+ pface->texinfo->vecs[0][3]*t;
tadjust = ((fixed16_t)(DotProduct (p_temp1, p_taxis) * 0x10000 + 0.5)) -
((pface->texturemins[1] << 16) >> miplevel)
+ pface->texinfo->vecs[1][3]*t;
//
// -1 (-epsilon) so we never wander off the edge of the texture
//
bbextents = ((pface->extents[0] << 16) >> miplevel) - 1;
bbextentt = ((pface->extents[1] << 16) >> miplevel) - 1;
}
/*
==============
D_DrawSurfaces
==============
*/
void D_DrawSurfaces (void)
{
surf_t *s;
msurface_t *pface;
surfcache_t *pcurrentcache;
vec3_t world_transformed_modelorg;
vec3_t local_modelorg;
currententity = &cl_entities[0];
TransformVector (modelorg, transformed_modelorg);
VectorCopy (transformed_modelorg, world_transformed_modelorg);
// TODO: could preset a lot of this at mode set time
if (r_drawflat.value)
{
for (s = &surfaces[1] ; s<surface_p ; s++)
{
if (!s->spans)
continue;
d_zistepu = s->d_zistepu;
d_zistepv = s->d_zistepv;
d_ziorigin = s->d_ziorigin;
D_DrawSolidSurface (s, (uintptr_t)s->data & 0xFF);
D_DrawZSpans (s->spans);
}
}
else
{
for (s = &surfaces[1] ; s<surface_p ; s++)
{
if (!s->spans)
continue;
r_drawnpolycount++;
d_zistepu = s->d_zistepu;
d_zistepv = s->d_zistepv;
d_ziorigin = s->d_ziorigin;
if (s->flags & SURF_DRAWSKY)
{
if (!r_skymade)
{
R_MakeSky ();
}
D_DrawSkyScans8 (s->spans);
D_DrawZSpans (s->spans);
}
else if (s->flags & SURF_DRAWBACKGROUND)
{
// set up a gradient for the background surface that places it
// effectively at infinity distance from the viewpoint
d_zistepu = 0;
d_zistepv = 0;
d_ziorigin = -0.9;
D_DrawSolidSurface (s, (int)r_clearcolor.value & 0xFF);
D_DrawZSpans (s->spans);
}
else if (s->flags & SURF_DRAWTURB)
{
pface = s->data;
miplevel = 0;
cacheblock = (pixel_t *)
((uint8_t *)pface->texinfo->texture +
pface->texinfo->texture->offsets[0]);
cachewidth = 64;
if (s->insubmodel)
{
// FIXME: we don't want to do all this for every polygon!
// TODO: store once at start of frame
currententity = s->entity; //FIXME: make this passed in to
// R_RotateBmodel ()
VectorSubtract (r_origin, currententity->origin,
local_modelorg);
TransformVector (local_modelorg, transformed_modelorg);
R_RotateBmodel (); // FIXME: don't mess with the frustum,
// make entity passed in
}
D_CalcGradients (pface);
Turbulent8 (s->spans);
D_DrawZSpans (s->spans);
if (s->insubmodel)
{
//
// restore the old drawing state
// FIXME: we don't want to do this every time!
// TODO: speed up
//
currententity = &cl_entities[0];
VectorCopy (world_transformed_modelorg,
transformed_modelorg);
VectorCopy (base_vpn, vpn);
VectorCopy (base_vup, vup);
VectorCopy (base_vright, vright);
VectorCopy (base_modelorg, modelorg);
R_TransformFrustum ();
}
}
else
{
if (s->insubmodel)
{
// FIXME: we don't want to do all this for every polygon!
// TODO: store once at start of frame
currententity = s->entity; //FIXME: make this passed in to
// R_RotateBmodel ()
VectorSubtract (r_origin, currententity->origin, local_modelorg);
TransformVector (local_modelorg, transformed_modelorg);
R_RotateBmodel (); // FIXME: don't mess with the frustum,
// make entity passed in
}
pface = s->data;
miplevel = D_MipLevelForScale (s->nearzi * scale_for_mip
* pface->texinfo->mipadjust);
// FIXME: make this passed in to D_CacheSurface
pcurrentcache = D_CacheSurface (pface, miplevel);
cacheblock = (pixel_t *)pcurrentcache->data;
cachewidth = pcurrentcache->width;
D_CalcGradients (pface);
(*d_drawspans) (s->spans);
D_DrawZSpans (s->spans);
if (s->insubmodel)
{
//
// restore the old drawing state
// FIXME: we don't want to do this every time!
// TODO: speed up
//
currententity = &cl_entities[0];
VectorCopy (world_transformed_modelorg,
transformed_modelorg);
VectorCopy (base_vpn, vpn);
VectorCopy (base_vup, vup);
VectorCopy (base_vright, vright);
VectorCopy (base_modelorg, modelorg);
R_TransformFrustum ();
}
}
}
}
}