/* gl_rmain.c (description) Copyright (C) 1996-1997 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA $Id$ */ #include "quakedef.h" entity_t r_worldentity; qboolean r_cache_thrash; // compatability vec3_t modelorg, r_entorigin; entity_t *currententity; int r_visframecount; // bumped when going to a new PVS int r_framecount; // used for dlight push checking mplane_t frustum[4]; int c_brush_polys, c_alias_polys; qboolean envmap; // true during envmap command capture int currenttexture = -1; // to avoid unnecessary texture sets int cnttextures[2] = {-1, -1}; // cached int particletexture; // little dot for particles int playertextures; // up to 16 color translated skins int mirrortexturenum; // quake texturenum, not gltexturenum qboolean mirror; mplane_t *mirror_plane; // // view origin // vec3_t vup; vec3_t vpn; vec3_t vright; vec3_t r_origin; float r_world_matrix[16]; float r_base_world_matrix[16]; // // screen size info // refdef_t r_refdef; mleaf_t *r_viewleaf, *r_oldviewleaf; int d_lightstylevalue[256]; // 8.8 fraction of base light value void R_MarkLeaves (void); cvar_t r_norefresh = {"r_norefresh","0"}; cvar_t r_drawentities = {"r_drawentities","1"}; cvar_t r_drawviewmodel = {"r_drawviewmodel","1"}; cvar_t r_speeds = {"r_speeds","0"}; cvar_t r_fullbright = {"r_fullbright","0"}; cvar_t r_lightmap = {"r_lightmap","0"}; cvar_t r_shadows = {"r_shadows","0"}; cvar_t r_mirroralpha = {"r_mirroralpha","1"}; cvar_t r_wateralpha = {"r_wateralpha","1"}; cvar_t r_dynamic = {"r_dynamic","1"}; cvar_t r_novis = {"r_novis","0"}; cvar_t r_netgraph = {"r_netgraph","0"}; cvar_t gl_clear = {"gl_clear","0"}; cvar_t gl_cull = {"gl_cull","1"}; cvar_t gl_texsort = {"gl_texsort","1"}; cvar_t gl_smoothmodels = {"gl_smoothmodels","1"}; cvar_t gl_affinemodels = {"gl_affinemodels","0"}; cvar_t gl_polyblend = {"gl_polyblend","1"}; cvar_t gl_flashblend = {"gl_flashblend","1"}; cvar_t gl_playermip = {"gl_playermip","0"}; cvar_t gl_nocolors = {"gl_nocolors","0"}; cvar_t gl_keeptjunctions = {"gl_keeptjunctions","1"}; cvar_t gl_reporttjunctions = {"gl_reporttjunctions","0"}; cvar_t gl_finish = {"gl_finish","0"}; extern cvar_t gl_ztrick; extern cvar_t scr_fov; /* ================= R_CullBox Returns true if the box is completely outside the frustom ================= */ qboolean R_CullBox (vec3_t mins, vec3_t maxs) { int i; for (i=0 ; i<4 ; i++) if (BoxOnPlaneSide (mins, maxs, &frustum[i]) == 2) return true; return false; } void R_RotateForEntity (entity_t *e) { glTranslatef (e->origin[0], e->origin[1], e->origin[2]); glRotatef (e->angles[1], 0, 0, 1); glRotatef (-e->angles[0], 0, 1, 0); //ZOID: fixed z angle glRotatef (e->angles[2], 1, 0, 0); } /* ============================================================= SPRITE MODELS ============================================================= */ /* ================ R_GetSpriteFrame ================ */ mspriteframe_t *R_GetSpriteFrame (entity_t *currententity) { msprite_t *psprite; mspritegroup_t *pspritegroup; mspriteframe_t *pspriteframe; int i, numframes, frame; float *pintervals, fullinterval, targettime, time; psprite = currententity->model->cache.data; frame = currententity->frame; if ((frame >= psprite->numframes) || (frame < 0)) { Con_Printf ("R_DrawSprite: no such frame %d\n", frame); frame = 0; } if (psprite->frames[frame].type == SPR_SINGLE) { pspriteframe = psprite->frames[frame].frameptr; } else { pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr; pintervals = pspritegroup->intervals; numframes = pspritegroup->numframes; fullinterval = pintervals[numframes-1]; time = cl.time + currententity->syncbase; // when loading in Mod_LoadSpriteGroup, we guaranteed all interval values // are positive, so we don't have to worry about division by 0 targettime = time - ((int)(time / fullinterval)) * fullinterval; for (i=0 ; i<(numframes-1) ; i++) { if (pintervals[i] > targettime) break; } pspriteframe = pspritegroup->frames[i]; } return pspriteframe; } /* ================= R_DrawSpriteModel ================= */ void R_DrawSpriteModel (entity_t *e) { vec3_t point; mspriteframe_t *frame; float *up, *right; vec3_t v_forward, v_right, v_up; msprite_t *psprite; // don't even bother culling, because it's just a single // polygon without a surface cache frame = R_GetSpriteFrame (e); psprite = currententity->model->cache.data; if (psprite->type == SPR_ORIENTED) { // bullet marks on walls AngleVectors (currententity->angles, v_forward, v_right, v_up); up = v_up; right = v_right; } else { // normal sprite up = vup; right = vright; } glColor3f (1,1,1); GL_DisableMultitexture(); GL_Bind(frame->gl_texturenum); glEnable (GL_ALPHA_TEST); glBegin (GL_QUADS); glEnable (GL_ALPHA_TEST); glBegin (GL_QUADS); glTexCoord2f (0, 1); VectorMA (e->origin, frame->down, up, point); VectorMA (point, frame->left, right, point); glVertex3fv (point); glTexCoord2f (0, 0); VectorMA (e->origin, frame->up, up, point); VectorMA (point, frame->left, right, point); glVertex3fv (point); glTexCoord2f (1, 0); VectorMA (e->origin, frame->up, up, point); VectorMA (point, frame->right, right, point); glVertex3fv (point); glTexCoord2f (1, 1); VectorMA (e->origin, frame->down, up, point); VectorMA (point, frame->right, right, point); glVertex3fv (point); glEnd (); glDisable (GL_ALPHA_TEST); } /* ============================================================= ALIAS MODELS ============================================================= */ #define NUMVERTEXNORMALS 162 float r_avertexnormals[NUMVERTEXNORMALS][3] = { #include "anorms.h" }; vec3_t shadevector; float shadelight, ambientlight; // precalculated dot products for quantized angles #define SHADEDOT_QUANT 16 float r_avertexnormal_dots[SHADEDOT_QUANT][256] = #include "anorm_dots.h" ; float *shadedots = r_avertexnormal_dots[0]; int lastposenum; /* ============= GL_DrawAliasFrame ============= */ void GL_DrawAliasFrame (aliashdr_t *paliashdr, int posenum) { float l; trivertx_t *verts; int *order; int count; lastposenum = posenum; verts = (trivertx_t *)((byte *)paliashdr + paliashdr->posedata); verts += posenum * paliashdr->poseverts; order = (int *)((byte *)paliashdr + paliashdr->commands); while (1) { // get the vertex count and primitive type count = *order++; if (!count) break; // done if (count < 0) { count = -count; glBegin (GL_TRIANGLE_FAN); } else glBegin (GL_TRIANGLE_STRIP); do { // texture coordinates come from the draw list glTexCoord2f (((float *)order)[0], ((float *)order)[1]); order += 2; // normals and vertexes come from the frame list l = shadedots[verts->lightnormalindex] * shadelight; glColor3f (l, l, l); glVertex3f (verts->v[0], verts->v[1], verts->v[2]); verts++; } while (--count); glEnd (); } } /* ============= GL_DrawAliasShadow ============= */ extern vec3_t lightspot; void GL_DrawAliasShadow (aliashdr_t *paliashdr, int posenum) { trivertx_t *verts; int *order; vec3_t point; float height, lheight; int count; lheight = currententity->origin[2] - lightspot[2]; height = 0; verts = (trivertx_t *)((byte *)paliashdr + paliashdr->posedata); verts += posenum * paliashdr->poseverts; order = (int *)((byte *)paliashdr + paliashdr->commands); height = -lheight + 1.0; while (1) { // get the vertex count and primitive type count = *order++; if (!count) break; // done if (count < 0) { count = -count; glBegin (GL_TRIANGLE_FAN); } else glBegin (GL_TRIANGLE_STRIP); do { // texture coordinates come from the draw list // (skipped for shadows) glTexCoord2fv ((float *)order); order += 2; // normals and vertexes come from the frame list point[0] = verts->v[0] * paliashdr->scale[0] + paliashdr->scale_origin[0]; point[1] = verts->v[1] * paliashdr->scale[1] + paliashdr->scale_origin[1]; point[2] = verts->v[2] * paliashdr->scale[2] + paliashdr->scale_origin[2]; point[0] -= shadevector[0]*(point[2]+lheight); point[1] -= shadevector[1]*(point[2]+lheight); point[2] = height; // height -= 0.001; glVertex3fv (point); verts++; } while (--count); glEnd (); } } /* ================= R_SetupAliasFrame ================= */ void R_SetupAliasFrame (int frame, aliashdr_t *paliashdr) { int pose, numposes; float interval; if ((frame >= paliashdr->numframes) || (frame < 0)) { Con_DPrintf ("R_AliasSetupFrame: no such frame %d\n", frame); frame = 0; } pose = paliashdr->frames[frame].firstpose; numposes = paliashdr->frames[frame].numposes; if (numposes > 1) { interval = paliashdr->frames[frame].interval; pose += (int)(cl.time / interval) % numposes; } GL_DrawAliasFrame (paliashdr, pose); } /* ================= R_DrawAliasModel ================= */ void R_DrawAliasModel (entity_t *e) { int i; int lnum; vec3_t dist; float add; model_t *clmodel; vec3_t mins, maxs; aliashdr_t *paliashdr; float an; int anim; clmodel = currententity->model; VectorAdd (currententity->origin, clmodel->mins, mins); VectorAdd (currententity->origin, clmodel->maxs, maxs); if (R_CullBox (mins, maxs)) return; VectorCopy (currententity->origin, r_entorigin); VectorSubtract (r_origin, r_entorigin, modelorg); // // get lighting information // ambientlight = shadelight = R_LightPoint (currententity->origin); // allways give the gun some light if (e == &cl.viewent && ambientlight < 24) ambientlight = shadelight = 24; for (lnum=0 ; lnum= cl.time) { VectorSubtract (currententity->origin, cl_dlights[lnum].origin, dist); add = cl_dlights[lnum].radius - Length(dist); if (add > 0) { ambientlight += add; //ZOID models should be affected by dlights as well shadelight += add; } } } // clamp lighting so it doesn't overbright as much if (ambientlight > 128) ambientlight = 128; if (ambientlight + shadelight > 192) shadelight = 192 - ambientlight; // ZOID: never allow players to go totally black if (!strcmp(clmodel->name, "progs/player.mdl")) { if (ambientlight < 8) ambientlight = shadelight = 8; } else if (!strcmp (clmodel->name, "progs/flame2.mdl") || !strcmp (clmodel->name, "progs/flame.mdl") ) // HACK HACK HACK -- no fullbright colors, so make torches full light ambientlight = shadelight = 256; shadedots = r_avertexnormal_dots[((int)(e->angles[1] * (SHADEDOT_QUANT / 360.0))) & (SHADEDOT_QUANT - 1)]; shadelight = shadelight / 200.0; an = e->angles[1]/180*M_PI; shadevector[0] = cos(-an); shadevector[1] = sin(-an); shadevector[2] = 1; VectorNormalize (shadevector); // // locate the proper data // paliashdr = (aliashdr_t *)Mod_Extradata (currententity->model); c_alias_polys += paliashdr->numtris; // // draw all the triangles // GL_DisableMultitexture(); glPushMatrix (); R_RotateForEntity (e); if (!strcmp (clmodel->name, "progs/eyes.mdl") ) { glTranslatef (paliashdr->scale_origin[0], paliashdr->scale_origin[1], paliashdr->scale_origin[2] - (22 + 8)); // double size of eyes, since they are really hard to see in gl glScalef (paliashdr->scale[0]*2, paliashdr->scale[1]*2, paliashdr->scale[2]*2); } else { glTranslatef (paliashdr->scale_origin[0], paliashdr->scale_origin[1], paliashdr->scale_origin[2]); glScalef (paliashdr->scale[0], paliashdr->scale[1], paliashdr->scale[2]); } anim = (int)(cl.time*10) & 3; GL_Bind(paliashdr->gl_texturenum[currententity->skinnum][anim]); // we can't dynamically colormap textures, so they are cached // seperately for the players. Heads are just uncolored. if (currententity->scoreboard && !gl_nocolors.value) { i = currententity->scoreboard - cl.players; if (!currententity->scoreboard->skin) { Skin_Find(currententity->scoreboard); R_TranslatePlayerSkin(i); } if (i >= 0 && iframe, paliashdr); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); glShadeModel (GL_FLAT); if (gl_affinemodels.value) glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glPopMatrix (); if (r_shadows.value) { glPushMatrix (); R_RotateForEntity (e); glDisable (GL_TEXTURE_2D); glEnable (GL_BLEND); glColor4f (0,0,0,0.5); GL_DrawAliasShadow (paliashdr, lastposenum); glEnable (GL_TEXTURE_2D); glDisable (GL_BLEND); glColor4f (1,1,1,1); glPopMatrix (); } } //================================================================================== /* ============= R_DrawEntitiesOnList ============= */ void R_DrawEntitiesOnList (void) { int i; if (!r_drawentities.value) return; // draw sprites seperately, because of alpha blending for (i=0 ; imodel->type) { case mod_alias: R_DrawAliasModel (currententity); break; case mod_brush: R_DrawBrushModel (currententity); break; default: break; } } for (i=0 ; imodel->type) { case mod_sprite: R_DrawSpriteModel (currententity); break; default : break; } } } /* ============= R_DrawViewModel ============= */ void R_DrawViewModel (void) { float ambient[4], diffuse[4]; int j; int lnum; vec3_t dist; float add; dlight_t *dl; int ambientlight, shadelight; if (!r_drawviewmodel.value || !Cam_DrawViewModel()) return; if (envmap) return; if (!r_drawentities.value) return; if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY) return; if (cl.stats[STAT_HEALTH] <= 0) return; currententity = &cl.viewent; if (!currententity->model) return; j = R_LightPoint (currententity->origin); if (j < 24) j = 24; // allways give some light on gun ambientlight = j; shadelight = j; // add dynamic lights for (lnum=0 ; lnumradius) continue; if (!dl->radius) continue; if (dl->die < cl.time) continue; VectorSubtract (currententity->origin, dl->origin, dist); add = dl->radius - Length(dist); if (add > 0) ambientlight += add; } ambient[0] = ambient[1] = ambient[2] = ambient[3] = (float)ambientlight / 128; diffuse[0] = diffuse[1] = diffuse[2] = diffuse[3] = (float)shadelight / 128; // hack the depth range to prevent view model from poking into walls glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin)); R_DrawAliasModel (currententity); glDepthRange (gldepthmin, gldepthmax); } /* ============ R_PolyBlend ============ */ void R_PolyBlend (void) { if (!gl_polyblend.value) return; if (!v_blend[3]) return; //Con_Printf("R_PolyBlend(): %4.2f %4.2f %4.2f %4.2f\n",v_blend[0], v_blend[1], v_blend[2], v_blend[3]); GL_DisableMultitexture(); glDisable (GL_ALPHA_TEST); glEnable (GL_BLEND); glDisable (GL_DEPTH_TEST); glDisable (GL_TEXTURE_2D); glLoadIdentity (); glRotatef (-90, 1, 0, 0); // put Z going up glRotatef (90, 0, 0, 1); // put Z going up glColor4fv (v_blend); glBegin (GL_QUADS); glVertex3f (10, 100, 100); glVertex3f (10, -100, 100); glVertex3f (10, -100, -100); glVertex3f (10, 100, -100); glEnd (); glDisable (GL_BLEND); glEnable (GL_TEXTURE_2D); glEnable (GL_ALPHA_TEST); } int SignbitsForPlane (mplane_t *out) { int bits, j; // for fast box on planeside test bits = 0; for (j=0 ; j<3 ; j++) { if (out->normal[j] < 0) bits |= 1<contents); V_CalcBlend (); r_cache_thrash = false; c_brush_polys = 0; c_alias_polys = 0; } void MYgluPerspective( GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar ) { GLdouble xmin, xmax, ymin, ymax; ymax = zNear * tan( fovy * M_PI / 360.0 ); ymin = -ymax; xmin = ymin * aspect; xmax = ymax * aspect; glFrustum( xmin, xmax, ymin, ymax, zNear, zFar ); } /* ============= R_SetupGL ============= */ void R_SetupGL (void) { float screenaspect; extern int glwidth, glheight; int x, x2, y2, y, w, h; // // set up viewpoint // glMatrixMode(GL_PROJECTION); glLoadIdentity (); x = r_refdef.vrect.x * glwidth/vid.width; x2 = (r_refdef.vrect.x + r_refdef.vrect.width) * glwidth/vid.width; y = (vid.height-r_refdef.vrect.y) * glheight/vid.height; y2 = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height)) * glheight/vid.height; // fudge around because of frac screen scale if (x > 0) x--; if (x2 < glwidth) x2++; if (y2 < 0) y2--; if (y < glheight) y++; w = x2 - x; h = y - y2; if (envmap) { x = y2 = 0; w = h = 256; } glViewport (glx + x, gly + y2, w, h); screenaspect = (float)r_refdef.vrect.width/r_refdef.vrect.height; // yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*180/M_PI; // yfov = (2.0 * tan (scr_fov.value/360*M_PI)) / screenaspect; // yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*(scr_fov.value*2)/M_PI; // MYgluPerspective (yfov, screenaspect, 4, 4096); MYgluPerspective (r_refdef.fov_y, screenaspect, 4, 4096); if (mirror) { if (mirror_plane->normal[2]) glScalef (1, -1, 1); else glScalef (-1, 1, 1); glCullFace(GL_BACK); } else glCullFace(GL_FRONT); glMatrixMode(GL_MODELVIEW); glLoadIdentity (); glRotatef (-90, 1, 0, 0); // put Z going up glRotatef (90, 0, 0, 1); // put Z going up glRotatef (-r_refdef.viewangles[2], 1, 0, 0); glRotatef (-r_refdef.viewangles[0], 0, 1, 0); glRotatef (-r_refdef.viewangles[1], 0, 0, 1); glTranslatef (-r_refdef.vieworg[0], -r_refdef.vieworg[1], -r_refdef.vieworg[2]); glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix); // // set drawing parms // if (gl_cull.value) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE); glDisable(GL_BLEND); glDisable(GL_ALPHA_TEST); glEnable(GL_DEPTH_TEST); } /* ================ R_RenderScene r_refdef must be set before the first call ================ */ void R_RenderScene (void) { R_SetupFrame (); R_SetFrustum (); R_SetupGL (); R_MarkLeaves (); // done here so we know if we're in water R_DrawWorld (); // adds static entities to the list S_ExtraUpdate (); // don't let sound get messed up if going slow R_DrawEntitiesOnList (); GL_DisableMultitexture(); R_RenderDlights (); R_DrawParticles (); #ifdef GLTEST Test_Draw (); #endif } /* ============= R_Clear ============= */ void R_Clear (void) { if (r_mirroralpha.value != 1.0) { if (gl_clear.value) glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); else glClear (GL_DEPTH_BUFFER_BIT); gldepthmin = 0; gldepthmax = 0.5; glDepthFunc (GL_LEQUAL); } else if (gl_ztrick.value) { static int trickframe; if (gl_clear.value) glClear (GL_COLOR_BUFFER_BIT); trickframe++; if (trickframe & 1) { gldepthmin = 0; gldepthmax = 0.49999; glDepthFunc (GL_LEQUAL); } else { gldepthmin = 1; gldepthmax = 0.5; glDepthFunc (GL_GEQUAL); } } else { if (gl_clear.value) glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); else glClear (GL_DEPTH_BUFFER_BIT); gldepthmin = 0; gldepthmax = 1; glDepthFunc (GL_LEQUAL); } glDepthRange (gldepthmin, gldepthmax); } #if 0 //!!! FIXME, Zoid, mirror is disabled for now /* ============= R_Mirror ============= */ void R_Mirror (void) { float d; msurface_t *s; entity_t *ent; if (!mirror) return; memcpy (r_base_world_matrix, r_world_matrix, sizeof(r_base_world_matrix)); d = DotProduct (r_refdef.vieworg, mirror_plane->normal) - mirror_plane->dist; VectorMA (r_refdef.vieworg, -2*d, mirror_plane->normal, r_refdef.vieworg); d = DotProduct (vpn, mirror_plane->normal); VectorMA (vpn, -2*d, mirror_plane->normal, vpn); r_refdef.viewangles[0] = -asin (vpn[2])/M_PI*180; r_refdef.viewangles[1] = atan2 (vpn[1], vpn[0])/M_PI*180; r_refdef.viewangles[2] = -r_refdef.viewangles[2]; ent = &cl_entities[cl.viewentity]; if (cl_numvisedicts < MAX_VISEDICTS) { cl_visedicts[cl_numvisedicts] = ent; cl_numvisedicts++; } gldepthmin = 0.5; gldepthmax = 1; glDepthRange (gldepthmin, gldepthmax); glDepthFunc (GL_LEQUAL); R_RenderScene (); R_DrawWaterSurfaces (); gldepthmin = 0; gldepthmax = 0.5; glDepthRange (gldepthmin, gldepthmax); glDepthFunc (GL_LEQUAL); // blend on top glEnable (GL_BLEND); glMatrixMode(GL_PROJECTION); if (mirror_plane->normal[2]) glScalef (1,-1,1); else glScalef (-1,1,1); glCullFace(GL_FRONT); glMatrixMode(GL_MODELVIEW); glLoadMatrixf (r_base_world_matrix); glColor4f (1,1,1,r_mirroralpha.value); s = cl.worldmodel->textures[mirrortexturenum]->texturechain; for ( ; s ; s=s->texturechain) R_RenderBrushPoly (s); cl.worldmodel->textures[mirrortexturenum]->texturechain = NULL; glDisable (GL_BLEND); glColor4f (1,1,1,1); } #endif /* ================ R_RenderView r_refdef must be set before the first call ================ */ void R_RenderView (void) { double time1 = 0, time2; if (r_norefresh.value) return; if (!r_worldentity.model || !cl.worldmodel) Sys_Error ("R_RenderView: NULL worldmodel"); if (r_speeds.value) { glFinish (); time1 = Sys_DoubleTime (); c_brush_polys = 0; c_alias_polys = 0; } mirror = false; if (gl_finish.value) glFinish (); R_Clear (); // render normal view R_RenderScene (); R_DrawViewModel (); R_DrawWaterSurfaces (); // render mirror view // R_Mirror (); R_PolyBlend (); if (r_speeds.value) { // glFinish (); time2 = Sys_DoubleTime (); Con_Printf ("%3i ms %4i wpoly %4i epoly\n", (int)((time2-time1)*1000), c_brush_polys, c_alias_polys); } }