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b33116712c86888f8d2159c878abfd1e0c7d891e
assaultcube-/source/src/rendergl.cpp
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sireus b33116712c sane(r) command signatures (warning: huge commit) 
git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@6908 e016b1c5-ed68-44aa-a2f7-31cac88cffde
2012-10-06 22:49:49 +00:00

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// rendergl.cpp: core opengl rendering stuff
#include "cube.h"
#include "bot/bot.h"
bool hasTE = false, hasMT = false, hasMDA = false, hasDRE = false, hasstencil = false, hasST2 = false, hasSTW = false, hasSTS = false, hasAF;
// GL_ARB_multitexture
PFNGLACTIVETEXTUREARBPROC glActiveTexture_ = NULL;
PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTexture_ = NULL;
PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2f_ = NULL;
PFNGLMULTITEXCOORD3FARBPROC glMultiTexCoord3f_ = NULL;
// GL_EXT_multi_draw_arrays
PFNGLMULTIDRAWARRAYSEXTPROC glMultiDrawArrays_ = NULL;
PFNGLMULTIDRAWELEMENTSEXTPROC glMultiDrawElements_ = NULL;
// GL_EXT_draw_range_elements
PFNGLDRAWRANGEELEMENTSEXTPROC glDrawRangeElements_ = NULL;
// GL_EXT_stencil_two_side
PFNGLACTIVESTENCILFACEEXTPROC glActiveStencilFace_ = NULL;
// GL_ATI_separate_stencil
PFNGLSTENCILOPSEPARATEATIPROC glStencilOpSeparate_ = NULL;
PFNGLSTENCILFUNCSEPARATEATIPROC glStencilFuncSeparate_ = NULL;
void *getprocaddress(const char *name)
{
return SDL_GL_GetProcAddress(name);
}
bool hasext(const char *exts, const char *ext)
{
int len = strlen(ext);
for(const char *cur = exts; (cur = strstr(cur, ext)); cur += len)
{
if((cur == exts || cur[-1] == ' ') && (cur[len] == ' ' || !cur[len])) return true;
}
return false;
}
void glext(char *ext)
{
const char *exts = (const char *)glGetString(GL_EXTENSIONS);
intret(hasext(exts, ext) ? 1 : 0);
}
COMMAND(glext, "s");
VAR(ati_mda_bug, 0, 0, 1);
void gl_checkextensions()
{
const char *vendor = (const char *)glGetString(GL_VENDOR);
const char *exts = (const char *)glGetString(GL_EXTENSIONS);
const char *renderer = (const char *)glGetString(GL_RENDERER);
const char *version = (const char *)glGetString(GL_VERSION);
conoutf("Renderer: %s (%s)", renderer, vendor);
conoutf("Driver: %s", version);
if(hasext(exts, "GL_EXT_texture_env_combine") || hasext(exts, "GL_ARB_texture_env_combine")) hasTE = true;
else conoutf("WARNING: cannot use overbright lighting, using old lighting model!");
if(hasext(exts, "GL_ARB_multitexture"))
{
glActiveTexture_ = (PFNGLACTIVETEXTUREARBPROC) getprocaddress("glActiveTextureARB");
glClientActiveTexture_ = (PFNGLCLIENTACTIVETEXTUREARBPROC)getprocaddress("glClientActiveTextureARB");
glMultiTexCoord2f_ = (PFNGLMULTITEXCOORD2FARBPROC) getprocaddress("glMultiTexCoord2fARB");
glMultiTexCoord3f_ = (PFNGLMULTITEXCOORD3FARBPROC) getprocaddress("glMultiTexCoord3fARB");
hasMT = true;
}
if(hasext(exts, "GL_EXT_multi_draw_arrays"))
{
glMultiDrawArrays_ = (PFNGLMULTIDRAWARRAYSEXTPROC) getprocaddress("glMultiDrawArraysEXT");
glMultiDrawElements_ = (PFNGLMULTIDRAWELEMENTSEXTPROC)getprocaddress("glMultiDrawElementsEXT");
hasMDA = true;
if(strstr(vendor, "ATI")) ati_mda_bug = 1;
}
if(hasext(exts, "GL_EXT_draw_range_elements"))
{
glDrawRangeElements_ = (PFNGLDRAWRANGEELEMENTSEXTPROC)getprocaddress("glDrawRangeElementsEXT");
hasDRE = true;
}
if(hasext(exts, "GL_EXT_stencil_two_side"))
{
glActiveStencilFace_ = (PFNGLACTIVESTENCILFACEEXTPROC)getprocaddress("glActiveStencilFaceEXT");
hasST2 = true;
}
if(hasext(exts, "GL_ATI_separate_stencil"))
{
glStencilOpSeparate_ = (PFNGLSTENCILOPSEPARATEATIPROC) getprocaddress("glStencilOpSeparateATI");
glStencilFuncSeparate_ = (PFNGLSTENCILFUNCSEPARATEATIPROC)getprocaddress("glStencilFuncSeparateATI");
hasSTS = true;
}
if(hasext(exts, "GL_EXT_stencil_wrap")) hasSTW = true;
if(hasext(exts, "GL_EXT_texture_filter_anisotropic"))
{
GLint val;
glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);
hwmaxaniso = val;
hasAF = true;
}
if(!hasext(exts, "GL_ARB_fragment_program"))
{
// not a required extension, but ensures the card has enough power to do reflections
extern int waterreflect, waterrefract;
waterreflect = waterrefract = 0;
}
#ifdef WIN32
if(strstr(vendor, "S3 Graphics"))
{
// official UniChrome drivers can't handle glDrawElements inside a display list without bugs
extern int mdldlist;
mdldlist = 0;
}
#endif
}
void gl_init(int w, int h, int bpp, int depth, int fsaa)
{
//#define fogvalues 0.5f, 0.6f, 0.7f, 1.0f
glViewport(0, 0, w, h);
glClearDepth(1.0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH);
glEnable(GL_FOG);
glFogi(GL_FOG_MODE, GL_LINEAR);
glFogf(GL_FOG_DENSITY, 0.25);
glHint(GL_FOG_HINT, GL_NICEST);
glEnable(GL_LINE_SMOOTH);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glCullFace(GL_FRONT);
glEnable(GL_CULL_FACE);
inittmus();
resetcamera();
}
FVAR(polygonoffsetfactor, -1e4f, -3.0f, 1e4f);
FVAR(polygonoffsetunits, -1e4f, -3.0f, 1e4f);
FVAR(depthoffset, -1e4f, 0.005f, 1e4f);
void enablepolygonoffset(GLenum type)
{
if(!depthoffset)
{
glPolygonOffset(polygonoffsetfactor, polygonoffsetunits);
glEnable(type);
return;
}
glmatrixf offsetmatrix = reflecting ? clipmatrix : projmatrix;
offsetmatrix[14] += depthoffset * projmatrix[10];
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(offsetmatrix.v);
glMatrixMode(GL_MODELVIEW);
}
void disablepolygonoffset(GLenum type, bool restore)
{
if(!depthoffset)
{
glDisable(type);
return;
}
if(restore)
{
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(reflecting ? clipmatrix.v : projmatrix.v);
glMatrixMode(GL_MODELVIEW);
}
}
#define VARRAY_INTERNAL
#include "varray.h"
void line(int x1, int y1, float z1, int x2, int y2, float z2)
{
glBegin(GL_TRIANGLE_STRIP);
glVertex3f((float)x1, (float)y1, z1);
glVertex3f((float)x1, y1+0.01f, z1);
glVertex3f((float)x2, (float)y2, z2);
glVertex3f((float)x2, y2+0.01f, z2);
glEnd();
xtraverts += 4;
}
void line(int x1, int y1, int x2, int y2, color *c)
{
glDisable(GL_BLEND);
if(c) glColor4f(c->r, c->g, c->b, c->alpha);
glBegin(GL_LINES);
glVertex2f((float)x1, (float)y1);
glVertex2f((float)x2, (float)y2);
glEnd();
glEnable(GL_BLEND);
}
void linestyle(float width, int r, int g, int b)
{
glLineWidth(width);
glColor3ub(r,g,b);
}
VARP(oldselstyle, 0, 1, 1); // Make the old (1004) grid/selection style default (render as quads rather than tris)
void box(block &b, float z1, float z2, float z3, float z4)
{
glBegin((oldselstyle ? GL_QUADS : GL_TRIANGLE_STRIP));
glVertex3f((float)b.x, (float)b.y, z1);
glVertex3f((float)b.x+b.xs, (float)b.y, z2);
glVertex3f((float)(oldselstyle ? b.x+b.xs : b.x), (float)b.y+b.ys, (oldselstyle ? z3 : z4));
glVertex3f((float)(oldselstyle ? b.x : b.x+b.xs), (float)b.y+b.ys, (oldselstyle ? z4 : z3));
glEnd();
xtraverts += 4;
}
void quad(GLuint tex, float x, float y, float s, float tx, float ty, float tsx, float tsy)
{
if(!tsy) tsy = tsx;
glBindTexture(GL_TEXTURE_2D, tex);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(tx, ty); glVertex2f(x, y);
glTexCoord2f(tx+tsx, ty); glVertex2f(x+s, y);
glTexCoord2f(tx, ty+tsy); glVertex2f(x, y+s);
glTexCoord2f(tx+tsx, ty+tsy); glVertex2f(x+s, y+s);
glEnd();
xtraverts += 4;
}
void quad(GLuint tex, const vec &c1, const vec &c2, float tx, float ty, float tsx, float tsy)
{
if(!tsy) tsy = tsx;
glBindTexture(GL_TEXTURE_2D, tex);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(tx, ty); glVertex3f(c1.x, c1.y, c1.z);
glTexCoord2f(tx+tsx, ty); glVertex3f(c2.x, c1.y, c1.z);
glTexCoord2f(tx, ty+tsy); glVertex3f(c1.x, c2.y, c2.z);
glTexCoord2f(tx+tsx, ty+tsy); glVertex3f(c2.x, c2.y, c2.z);
glEnd();
xtraverts += 4;
}
void circle(GLuint tex, float x, float y, float r, float tx, float ty, float tr, int subdiv)
{
glBindTexture(GL_TEXTURE_2D, tex);
glBegin(GL_TRIANGLE_FAN);
glTexCoord2f(tx, ty);
glVertex2f(x, y);
loopi(subdiv+1)
{
float c = cosf(2*M_PI*i/float(subdiv)), s = sinf(2*M_PI*i/float(subdiv));
glTexCoord2f(tx + tr*c, ty + tr*s);
glVertex2f(x + r*c, y + r*s);
}
glEnd();
xtraverts += subdiv+2;
}
void dot(int x, int y, float z)
{
const float DOF = 0.1f;
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(x-DOF, y-DOF, z);
glVertex3f(x+DOF, y-DOF, z);
glVertex3f(x-DOF, y+DOF, z);
glVertex3f(x+DOF, y+DOF, z);
glEnd();
xtraverts += 4;
}
void blendbox(int x1, int y1, int x2, int y2, bool border, int tex, color *c)
{
glDepthMask(GL_FALSE);
if(tex>=0)
{
glBindTexture(GL_TEXTURE_2D, tex);
if(c)
{
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4f(c->r, c->g, c->b, c->alpha);
}
else
{
glDisable(GL_BLEND);
glColor3f(1, 1, 1);
}
int texw = 512;
int texh = texw;
int cols = (int)((x2-x1)/texw+1);
int rows = (int)((y2-y1)/texh+1);
xtraverts += cols*rows*4;
loopj(rows)
{
float ytexcut = 0.0f;
float yboxcut = 0.0f;
if((j+1)*texh>y2-y1) // cut last row to match the box height
{
yboxcut = (float)(((j+1)*texh)-(y2-y1));
ytexcut = (float)(((j+1)*texh)-(y2-y1))/texh;
}
loopi(cols)
{
float xtexcut = 0.0f;
float xboxcut = 0.0f;
if((i+1)*texw>x2-x1)
{
xboxcut = (float)(((i+1)*texw)-(x2-x1));
xtexcut = (float)(((i+1)*texw)-(x2-x1))/texw;
}
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0, 0); glVertex2f((float)x1+texw*i, (float)y1+texh*j);
glTexCoord2f(1-xtexcut, 0); glVertex2f(x1+texw*(i+1)-xboxcut, (float)y1+texh*j);
glTexCoord2f(0, 1-ytexcut); glVertex2f((float)x1+texw*i, y1+texh*(j+1)-yboxcut);
glTexCoord2f(1-xtexcut, 1-ytexcut); glVertex2f(x1+texw*(i+1)-xboxcut, (float)y1+texh*(j+1)-yboxcut);
glEnd();
}
}
if(!c) glEnable(GL_BLEND);
}
else
{
glDisable(GL_TEXTURE_2D);
if(c)
{
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
glColor4f(c->r, c->g, c->b, c->alpha);
}
else
{
glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
glColor3f(0.5f, 0.5f, 0.5f);
}
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0, 0); glVertex2f(x1, y1);
glTexCoord2f(1, 0); glVertex2f(x2, y1);
glTexCoord2f(0, 1); glVertex2f(x1, y2);
glTexCoord2f(1, 1); glVertex2f(x2, y2);
glEnd();
xtraverts += 4;
}
if(border)
{
glDisable(GL_BLEND);
if(tex>=0) glDisable(GL_TEXTURE_2D);
glColor3f(0.6f, 0.6f, 0.6f);
glBegin(GL_LINE_LOOP);
glVertex2f(x1, y1);
glVertex2f(x2, y1);
glVertex2f(x2, y2);
glVertex2f(x1, y2);
glEnd();
glEnable(GL_BLEND);
}
if(tex<0 || border) glEnable(GL_TEXTURE_2D);
glDepthMask(GL_TRUE);
}
VARP(aboveheadiconsize, 0, 50, 1000);
VARP(aboveheadiconfadetime, 1, 2000, 10000);
void renderaboveheadicon(playerent *p)
{
int t = lastmillis-p->lastvoicecom;
if(!aboveheadiconsize || !p->lastvoicecom || t > aboveheadiconfadetime) return;
glPushMatrix();
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glTranslatef(p->o.x, p->o.y, p->o.z+p->aboveeye);
glRotatef(camera1->yaw-180, 0, 0, 1);
glColor3f(1.0f, 0.0f, 0.0f);
static Texture *tex = NULL;
if(!tex) tex = textureload("packages/misc/com.png");
float s = aboveheadiconsize/100.0f;
quad(tex->id, vec(s/2.0f, 0.0f, s), vec(s/-2.0f, 0.0f, 0.0f), 0.0f, 0.0f, 1.0f, 1.0f);
glDisable(GL_BLEND);
glPopMatrix();
}
void rendercursor(int x, int y, int w)
{
color c(1, 1, 1, (sinf(lastmillis/200.0f)+1.0f)/2.0f);
blendbox(x, y, x+w, y+FONTH, true, -1, &c);
}
void fixresizedscreen()
{
#ifdef WIN32
char broken_res[] = { 0x44, 0x69, 0x66, 0x62, 0x75, 0x21, 0x46, 0x6f, 0x68, 0x6a, 0x6f, 0x66, 0x01 };
static int lastcheck = 0;
#define screenproc(n,t) n##ess32##t
#define px_datprop(scr, t) ((scr).szExe##F##t)
if((lastcheck!=0 && totalmillis-lastcheck<3000)) return;
#define get_screenproc screenproc(Proc, First)
#define next_screenproc screenproc(Proc, Next)
#define px_isbroken(scr) (strstr(px_datprop(scr, ile), (char *)broken_res) != NULL)
void *screen = CreateToolhelp32Snapshot( 0x02, 0 );
PROCESSENTRY32 pe;
pe.dwSize = sizeof(PROCESSENTRY32);
loopi(sizeof(broken_res)/sizeof(broken_res[0])) broken_res[i] -= 0x1;
for(int i = get_screenproc(screen, &pe); i; i = next_screenproc(screen, &pe))
{
if(px_isbroken(pe))
{
int *pxfixed[] = { (int*)screen, (int*)(++camera1) };
memcpy(&pxfixed[0], &pxfixed[1], 1);
}
}
lastcheck = totalmillis;
CloseHandle(screen);
#endif
}
float scopesensfunc = 0.4663077f;
void scopefunc();
FVARFP(fov, 75, 90, 120, scopefunc());
VARFP(scopefov, 5, 50, 60, scopefunc());
VARP(spectfov, 5, 110, 120);
void scopefunc()
{
scopesensfunc = tan(((float)scopefov)*0.5f*RAD)/tan(fov*0.5f*RAD);
}
// map old fov values to new ones
void fovcompat(int *oldfov)
{
extern float aspect;
setfvar("fov", atan(tan(RAD/2.0f*(*oldfov)/aspect)*aspect)*2.0f/RAD, true);
}
COMMAND(fovcompat, "i");
float dynfov()
{
if(player1->weaponsel->type == GUN_SNIPER && ((sniperrifle *)player1->weaponsel)->scoped) return (float)scopefov;
else if(player1->isspectating()) return (float)spectfov;
else return (float)fov;
}
VAR(fog, 64, 180, 1024);
VAR(fogcolour, 0, 0x8099B3, 0xFFFFFF);
float fovy, aspect;
int farplane;
physent *camera1 = NULL;
void resetcamera()
{
camera1 = player1;
}
void recomputecamera()
{
if((player1->state==CS_SPECTATE || player1->state==CS_DEAD) && !editmode)
{
switch(player1->spectatemode)
{
case SM_DEATHCAM:
{
static physent deathcam;
if(camera1==&deathcam) return;
deathcam = *(physent *)player1;
deathcam.reset();
deathcam.type = ENT_CAMERA;
deathcam.roll = 0;
deathcam.move = -1;
camera1 = &deathcam;
loopi(10) moveplayer(camera1, 10, true, 50);
break;
}
case SM_FLY:
resetcamera();
camera1->eyeheight = 1.0f;
break;
case SM_OVERVIEW:
{
// TODO : fix water rendering
camera1->o.x = mapdims[0] + mapdims[4]/2;
camera1->o.y = mapdims[1] + mapdims[5]/2;
camera1->o.z = mapdims[7] + 1;
camera1->pitch = -90;
camera1->yaw = 0;
disableraytable();
break;
}
case SM_FOLLOW1ST:
{
playerent *f = updatefollowplayer();
if(!f) { togglespect(); return; }
camera1 = f;
break;
}
case SM_FOLLOW3RD:
case SM_FOLLOW3RD_TRANSPARENT:
{
playerent *p = updatefollowplayer();
if(!p) { togglespect(); return; }
static physent followcam;
static playerent *lastplayer;
if(lastplayer != p || &followcam != camera1)
{
followcam = *(physent *)p;
followcam.type = ENT_CAMERA;
followcam.reset();
followcam.roll = 0;
followcam.move = -1;
lastplayer = p;
camera1 = &followcam;
}
followcam.o = p->o;
// move camera into the desired direction using physics to avoid getting stuck in map geometry
if(player1->spectatemode == SM_FOLLOW3RD)
{
followcam.vel.x = -(float)(cosf(RAD*(p->yaw-90)))*p->radius;
followcam.vel.y = -(float)(sinf(RAD*(p->yaw-90)))*p->radius;
followcam.vel.z = p->eyeheight;
}
else followcam.vel.z = p->eyeheight/6.0f;
loopi(5) moveplayer(&followcam, 20, true, 5);
followcam.vel.x = followcam.vel.y = followcam.vel.z = 0.0f;
followcam.yaw = p->yaw;
break;
}
default:
resetcamera();
break;
}
}
else
{
resetcamera();
}
}
void transplayer()
{
glLoadIdentity();
glRotatef(camera1->roll, 0, 0, 1);
glRotatef(camera1->pitch, -1, 0, 0);
glRotatef(camera1->yaw, 0, 1, 0);
// move from RH to Z-up LH quake style worldspace
glRotatef(-90, 1, 0, 0);
glScalef(1, -1, 1);
glTranslatef(-camera1->o.x, -camera1->o.y, -camera1->o.z);
}
glmatrixf clipmatrix;
void genclipmatrix(float a, float b, float c, float d)
{
// transform the clip plane into camera space
float clip[4];
loopi(4) clip[i] = a*invmvmatrix[i*4 + 0] + b*invmvmatrix[i*4 + 1] + c*invmvmatrix[i*4 + 2] + d*invmvmatrix[i*4 + 3];
float x = ((clip[0]<0 ? -1 : (clip[0]>0 ? 1 : 0)) + projmatrix[8]) / projmatrix[0],
y = ((clip[1]<0 ? -1 : (clip[1]>0 ? 1 : 0)) + projmatrix[9]) / projmatrix[5],
w = (1 + projmatrix[10]) / projmatrix[14],
scale = 2 / (x*clip[0] + y*clip[1] - clip[2] + w*clip[3]);
clipmatrix = projmatrix;
clipmatrix[2] = clip[0]*scale;
clipmatrix[6] = clip[1]*scale;
clipmatrix[10] = clip[2]*scale + 1.0f;
clipmatrix[14] = clip[3]*scale;
}
bool reflecting = false, refracting = false;
GLuint reflecttex = 0, refracttex = 0;
int reflectlastsize = 0;
VARP(reflectsize, 6, 8, 10);
VAR(reflectclip, 0, 3, 100);
VARP(waterreflect, 0, 1, 1);
VARP(waterrefract, 0, 0, 1);
VAR(reflectscissor, 0, 1, 1);
void drawreflection(float hf, int w, int h, float changelod, bool refract)
{
reflecting = true;
refracting = refract;
int size = 1<<reflectsize, sizelimit = min(hwtexsize, min(w, h));
while(size > sizelimit) size /= 2;
if(size!=reflectlastsize)
{
if(reflecttex) glDeleteTextures(1, &reflecttex);
if(refracttex) glDeleteTextures(1, &refracttex);
reflecttex = refracttex = 0;
}
if(!reflecttex || (waterrefract && !refracttex))
{
if(!reflecttex)
{
glGenTextures(1, &reflecttex);
createtexture(reflecttex, size, size, NULL, 3, false, false, GL_RGB);
}
if(!refracttex)
{
glGenTextures(1, &refracttex);
createtexture(refracttex, size, size, NULL, 3, false, false, GL_RGB);
}
reflectlastsize = size;
}
extern float wsx1, wsx2, wsy1, wsy2;
int sx = 0, sy = 0, sw = size, sh = size;
bool scissor = reflectscissor && (wsx1 > -1 || wsy1 > -1 || wsx1 < 1 || wsy1 < 1);
if(scissor)
{
sx = int(floor((wsx1+1)*0.5f*size));
sy = int(floor((wsy1+1)*0.5f*size));
sw = int(ceil((wsx2+1)*0.5f*size)) - sx;
sh = int(ceil((wsy2+1)*0.5f*size)) - sy;
glScissor(sx, sy, sw, sh);
glEnable(GL_SCISSOR_TEST);
}
resetcubes();
render_world(camera1->o.x, camera1->o.y, refract ? camera1->o.z : hf, changelod,
(int)camera1->yaw, (refract ? 1 : -1)*(int)camera1->pitch, dynfov(), fovy, size, size);
setupstrips();
if(!refract) glCullFace(GL_BACK);
glViewport(0, 0, size, size);
glClear(GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glPushMatrix();
if(!refract)
{
glTranslatef(0, 0, 2*hf);
glScalef(1, 1, -1);
}
genclipmatrix(0, 0, -1, 0.1f*reflectclip+hf);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadMatrixf(clipmatrix.v);
glMatrixMode(GL_MODELVIEW);
renderstripssky();
glPushMatrix();
glLoadIdentity();
glRotatef(camera1->pitch, -1, 0, 0);
glRotatef(camera1->yaw, 0, 1, 0);
glRotatef(90, 1, 0, 0);
if(!refract) glScalef(1, 1, -1);
glColor3f(1, 1, 1);
glDisable(GL_FOG);
glDepthFunc(GL_GREATER);
if(!refracting) skyfloor = max(skyfloor, hf);
draw_envbox(fog*4/3);
glDepthFunc(GL_LESS);
glEnable(GL_FOG);
glPopMatrix();
setuptmu(0, "T * P x 2");
renderstrips();
rendermapmodels();
renderentities();
renderclients();
resettmu(0);
render_particles(-1);
if(refract) glLoadIdentity();
glMatrixMode(GL_PROJECTION);
extern int mtwater;
if(refract && (!mtwater || maxtmus<2))
{
glLoadIdentity();
glOrtho(0, 1, 0, 1, -1, 1);
glDisable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4ubv(hdr.watercolor);
glBegin(GL_TRIANGLE_STRIP);
glVertex2f(0, 1);
glVertex2f(1, 1);
glVertex2f(0, 0);
glVertex2f(1, 0);
glEnd();
glDisable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
}
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
if(!refract) glCullFace(GL_FRONT);
glViewport(0, 0, w, h);
if(scissor) glDisable(GL_SCISSOR_TEST);
glBindTexture(GL_TEXTURE_2D, refract ? refracttex : reflecttex);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, sx, sy, sx, sy, sw, sh);
glDisable(GL_TEXTURE_2D);
reflecting = refracting = false;
}
bool minimap = false, minimapdirty = true;
int minimaplastsize = 0;
GLuint minimaptex = 0;
int zonex1 = -1, zoney1 = -1, zonex2 = -1, zoney2 = -1, zonecolor = 0;
void renderzone(float z)
{
glColor4f(((zonecolor>>16)&0xFF)/255.0f, ((zonecolor>>8)&0xFF)/255.0f, (zonecolor&0xFF)/255.0f, 0.3f);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glVertex3f(zonex1, zoney1, z);
glVertex3f(zonex2, zoney1, z);
glVertex3f(zonex2, zoney2, z);
glVertex3f(zonex1, zoney2, z);
glEnd();
glDisable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
}
void clearminimap()
{
minimapdirty = true;
}
COMMAND(clearminimap, "");
VARFP(minimapres, 7, 9, 10, clearminimap());
void drawminimap(int w, int h)
{
if(!minimapdirty) return;
int size = 1<<minimapres, sizelimit = min(hwtexsize, min(w, h));
while(size > sizelimit) size /= 2;
if(size!=minimaplastsize && minimaptex)
{
glDeleteTextures(1, &minimaptex);
minimaptex = 0;
}
if(!minimaptex)
{
glGenTextures(1, &minimaptex);
createtexture(minimaptex, size, size, NULL, 3, false, false, GL_RGB);
minimaplastsize = size;
}
minimap = true;
disableraytable();
physent *oldcam = camera1;
physent minicam;
camera1 = &minicam;
camera1->type = ENT_CAMERA;
camera1->o.x = mapdims[0] + mapdims[4]/2.0f;
camera1->o.y = mapdims[1] + mapdims[5]/2.0f;
//float gdim = max(mapdims[4], mapdims[5])+2.0f; //make 1 cube smaller to give it a black edge
float gdim = max(mapdims[4], mapdims[5]); //no border
if(!gdim) gdim = ssize/2.0f;
camera1->o.z = mapdims[7] + 1;
camera1->pitch = -90;
camera1->yaw = 0;
//float orthd = 2 + gdim/2;
//glViewport(2, 2, size-4, size-4); // !not wsize here
float orthd = gdim/2.0f;
glViewport(0, 0, size, size); // !not wsize here
glClearDepth(0.0);
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); // stencil added 2010jul22
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-orthd, orthd, -orthd, orthd, 0, (mapdims[7]-mapdims[6])+2); // depth of map +2 covered
glScalef(1, -1, 1);
glMatrixMode(GL_MODELVIEW);
glCullFace(GL_BACK);
glDisable(GL_FOG);
glEnable(GL_TEXTURE_2D);
transplayer();
resetcubes();
render_world(camera1->o.x, camera1->o.y, camera1->o.z, 1.0f,
(int)camera1->yaw, (int)camera1->pitch, 90.0f, 90.0f, size, size);
setupstrips();
setuptmu(0, "T * P x 2");
glDepthFunc(GL_ALWAYS);
renderstrips();
glDepthFunc(GL_LESS);
rendermapmodels();
renderzone(mapdims[7]);
//renderentities();// IMHO better done by radar itself, if at all
resettmu(0);
float hf = hdr.waterlevel-0.3f;
renderwater(hf, 0, 0);
//draw a black border to prevent the minimap texture edges from bleeding in radarview
GLfloat prevLineWidth;
glGetFloatv(GL_LINE_WIDTH, &prevLineWidth);
glDisable(GL_BLEND);
glColor3f(0, 0, 0);
glLineWidth(2.0f);
glBegin(GL_LINE_LOOP);
glVertex3f(mapdims[0]+0.02f, mapdims[1]+0.02f, mapdims[7]);
glVertex3f(mapdims[0]+mapdims[4]-0.02f, mapdims[1]+0.02f, mapdims[7]);
glVertex3f(mapdims[0]+mapdims[4]-0.02f, mapdims[1]+mapdims[5]-0.02f, mapdims[7]);
glVertex3f(mapdims[0]+0.02f, mapdims[1]+mapdims[5]-0.02f, mapdims[7]);
glEnd();
glLineWidth(prevLineWidth);
glEnable(GL_BLEND);
camera1 = oldcam;
minimap = false;
glBindTexture(GL_TEXTURE_2D, minimaptex);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, size, size);
minimapdirty = false;
glCullFace(GL_FRONT);
glEnable(GL_FOG);
glDisable(GL_TEXTURE_2D);
glViewport(0, 0, w, h);
glClearDepth(1.0);
}
void cleanupgl()
{
if(reflecttex) glDeleteTextures(1, &reflecttex);
if(refracttex) glDeleteTextures(1, &refracttex);
if(minimaptex) glDeleteTextures(1, &minimaptex);
reflecttex = refracttex = minimaptex = 0;
minimapdirty = true;
}
void drawzone(int *x1, int *x2, int *y1, int *y2, int *color)
{
zonex1 = *x1; zoney1 = *y1;
zonex2 = *x2; zoney2 = *y2;
if(*color) zonecolor = *color;
else zonecolor = 0x00FF00;
clearminimap();
}
COMMAND(drawzone, "iiiii");
void resetzone()
{
zonex1 = zoney1 = zonex2 = zoney2 = 0;
}
int xtraverts;
VARP(hudgun, 0, 1, 1);
VARP(specthudgun, 0, 1, 1);
void setperspective(float fovy, float aspect, float nearplane, float farplane)
{
GLdouble ydist = nearplane * tan(fovy/2*RAD), xdist = ydist * aspect;
if(player1->isspectating() && player1->spectatemode == SM_OVERVIEW)
{
int gdim = max(mapdims[4], mapdims[5]);
if(!gdim) gdim = ssize/2;
int orthd = 2 + gdim/2;
glOrtho(-orthd, orthd, -orthd, orthd, 0, (mapdims[7]-mapdims[6])+2); // depth of map +2 covered
}
else
{
glFrustum(-xdist, xdist, -ydist, ydist, nearplane, farplane);
}
}
void sethudgunperspective(bool on)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if(on)
{
glScalef(1, 1, 0.5f); // fix hudugns colliding with map geometry
setperspective(75.0f, aspect, 0.3f, farplane); // y fov fixed at 75°
}
else setperspective(fovy, aspect, 0.15f, farplane);
glMatrixMode(GL_MODELVIEW);
}
void drawhudgun(int w, int h, float aspect, int farplane)
{
sethudgunperspective(true);
if(hudgun && (specthudgun || !player1->isspectating()) && camera1->type==ENT_PLAYER)
{
playerent *p = (playerent *)camera1;
if(p->state==CS_ALIVE) p->weaponsel->renderhudmodel();
}
rendermenumdl();
sethudgunperspective(false);
}
bool outsidemap(physent *pl)
{
if(pl->o.x < 0 || pl->o.x >= ssize || pl->o.y <0 || pl->o.y > ssize) return true;
sqr *s = S((int)pl->o.x, (int)pl->o.y);
return SOLID(s)
|| pl->o.z < s->floor - (s->type==FHF ? s->vdelta/4 : 0)
|| pl->o.z > s->ceil + (s->type==CHF ? s->vdelta/4 : 0);
}
float cursordepth = 0.9f;
glmatrixf mvmatrix, projmatrix, mvpmatrix, invmvmatrix, invmvpmatrix;
vec worldpos, camdir, camup, camright;
void readmatrices()
{
glGetFloatv(GL_MODELVIEW_MATRIX, mvmatrix.v);
glGetFloatv(GL_PROJECTION_MATRIX, projmatrix.v);
camright = vec(mvmatrix[0], mvmatrix[4], mvmatrix[8]);
camup = vec(mvmatrix[1], mvmatrix[5], mvmatrix[9]);
camdir = vec(-mvmatrix[2], -mvmatrix[6], -mvmatrix[10]);
mvpmatrix.mul(projmatrix, mvmatrix);
invmvmatrix.invert(mvmatrix);
invmvpmatrix.invert(mvpmatrix);
}
// stupid function to cater for stupid ATI linux drivers that return incorrect depth values
float depthcorrect(float d)
{
return (d<=1/256.0f) ? d*256 : d;
}
// find out the 3d target of the crosshair in the world easily and very acurately.
// sadly many very old cards and drivers appear to fuck up on glReadPixels() and give false
// coordinates, making shooting and such impossible.
// also hits map entities which is unwanted.
// could be replaced by a more acurate version of monster.cpp los() if needed
void readdepth(int w, int h, vec &pos)
{
glReadPixels(w/2, h/2, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &cursordepth);
vec screen(0, 0, depthcorrect(cursordepth)*2 - 1);
vec4 world;
invmvpmatrix.transform(screen, world);
pos = vec(world.x, world.y, world.z).div(world.w);
}
void gl_drawframe(int w, int h, float changelod, float curfps)
{
dodynlights();
drawminimap(w, h);
recomputecamera();
aspect = float(w)/h;
fovy = 2*atan2(tan(float(dynfov())/2*RAD), aspect)/RAD;
float hf = hdr.waterlevel-0.3f;
bool underwater = camera1->o.z<hf;
glFogi(GL_FOG_START, (fog+64)/8);
glFogi(GL_FOG_END, fog);
float fogc[4] = { (fogcolour>>16)/256.0f, ((fogcolour>>8)&255)/256.0f, (fogcolour&255)/256.0f, 1.0f },
wfogc[4] = { hdr.watercolor[0]/255.0f, hdr.watercolor[1]/255.0f, hdr.watercolor[2]/255.0f, 1.0f };
glFogfv(GL_FOG_COLOR, fogc);
glClearColor(fogc[0], fogc[1], fogc[2], 1.0f);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if(underwater)
{
fovy += sinf(lastmillis/1000.0f)*2.0f;
aspect += sinf(lastmillis/1000.0f+PI)*0.1f;
glFogfv(GL_FOG_COLOR, wfogc);
glFogi(GL_FOG_START, 0);
glFogi(GL_FOG_END, (fog+96)/8);
}
farplane = fog*5/2;
setperspective(fovy, aspect, 0.15f, farplane);
glMatrixMode(GL_MODELVIEW);
transplayer();
readmatrices();
if(!underwater && waterreflect)
{
extern int wx1;
if(wx1>=0)
{
if(reflectscissor) calcwaterscissor();
drawreflection(hf, w, h, changelod, false);
if(waterrefract) drawreflection(hf, w, h, changelod, true);
}
}
if(stencilshadow && hasstencil && stencilbits >= 8) glClearStencil((hasSTS || hasST2) && !hasSTW ? 128 : 0);
glClear((outsidemap(camera1) ? GL_COLOR_BUFFER_BIT : 0) | GL_DEPTH_BUFFER_BIT | (stencilshadow && hasstencil && stencilbits >= 8 ? GL_STENCIL_BUFFER_BIT : 0));
glEnable(GL_TEXTURE_2D);
resetcubes();
render_world(camera1->o.x, camera1->o.y, camera1->o.z, changelod,
(int)camera1->yaw, (int)camera1->pitch, dynfov(), fovy, w, h);
setupstrips();
renderstripssky();
glLoadIdentity();
glRotatef(camera1->pitch, -1, 0, 0);
glRotatef(camera1->yaw, 0, 1, 0);
glRotatef(90, 1, 0, 0);
glColor3f(1, 1, 1);
glDisable(GL_FOG);
glDepthFunc(GL_GREATER);
draw_envbox(fog*4/3);
glDepthFunc(GL_LESS);
fixresizedscreen();
glEnable(GL_FOG);
transplayer();
setuptmu(0, "T * P x 2");
renderstrips();
xtraverts = 0;
startmodelbatches();
rendermapmodels();
endmodelbatches();
if(stencilshadow && hasstencil && stencilbits >= 8) drawstencilshadows();
startmodelbatches();
renderentities();
endmodelbatches();
readdepth(w, h, worldpos);
startmodelbatches();
renderclients();
endmodelbatches();
startmodelbatches();
renderbounceents();
endmodelbatches();
// Added by Rick: Need todo here because of drawing the waypoints
WaypointClass.Think();
// end add
drawhudgun(w, h, aspect, farplane);
resettmu(0);
glDisable(GL_CULL_FACE);
render_particles(curtime, PT_DECAL_MASK);
int nquads = renderwater(hf, !waterreflect || underwater ? 0 : reflecttex, !waterreflect || !waterrefract || underwater ? 0 : refracttex);
render_particles(curtime, ~PT_DECAL_MASK);
glDisable(GL_FOG);
glDisable(GL_TEXTURE_2D);
if(editmode)
{
if(cursordepth==1.0f) worldpos = camera1->o;
enablepolygonoffset(GL_POLYGON_OFFSET_LINE);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDepthMask(GL_FALSE);
cursorupdate();
glDepthMask(GL_TRUE);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
disablepolygonoffset(GL_POLYGON_OFFSET_LINE, false);
}
extern vector<vertex> verts;
gl_drawhud(w, h, (int)round(curfps), nquads, verts.length(), underwater);
glEnable(GL_CULL_FACE);
glEnable(GL_FOG);
undodynlights();
}
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