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typedef unsigned char Byte;
#include <GL/glew.h>
#include "CgUtil.h"
//#include <GL/gl.h>
#include <math.h>
//#include <GL/glu.h>
#include <vector>
#include <vcg/space/point3.h>
#include <vcg/space/color4.h>
using namespace vcg;
using namespace std;
#include "CubeMapSamp.h"
#include "OctaMapSamp.h"
#include "Mol.h"
#include "AOgpu.h"
#include "HardSettings.h"
extern int CSIZE;
extern int used_mapping;
bool SaveImagePPM( const char * filename , const Byte *im, int sizex, int sizey);
void ReloadTexture(vector<Byte> t, bool bilinear);
float extractCurrentScaleFactor();
CgUtil mySettings;
vector<Byte> AOgpu::fakeTexture;
vector<unsigned int> AOgpu::snap;
vector<int> AOgpu::sum;
unsigned int AOgpu::div;
float AOgpu::areas;
unsigned int AOgpu::mask=0;
void swapbuffers();
void AOgpu::OpenGLSnap()
{
GLint vp[4];
glGetIntegerv( GL_VIEWPORT,vp ); // Lettura viewport
glPixelStorei( GL_PACK_ROW_LENGTH, 0);
glPixelStorei( GL_PACK_ALIGNMENT, 1);
snapx = vp[2];
snapy = vp[3];
//Create(tx,ty);
if (snap.size()!=snapx*snapy+1) snap.resize(snapx*snapy+1);
GLenum mtype = 0;
int format=0;
if(format==0) {
format = GL_RGBA;
mtype = GL_UNSIGNED_BYTE;
}
if(format==GL_DEPTH_COMPONENT) {
format = GL_DEPTH_COMPONENT;
mtype = GL_FLOAT;
}
glReadPixels(vp[0],vp[1],vp[2],vp[3],format,mtype,(GLvoid *)&snap[0]);
//SaveImagePPM("test.ppm" ,(Byte*)(&snap[0]), vp[2],vp[3]);
//swapbuffers();
}
AOgpu::AOgpu( Point3f _dir, Mol &m) {
int out=hardSettings.TSIZE*hardSettings.TSIZE;
glClearColor((out&&255)/255.0 , ((out>>8)&&255)/255.0, (out>>16)/255.0, 0 );
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
dir=_dir.Normalize();
// orthonormal basis
Point3f ax,ay,az=dir;
ax=az^Point3f(1,0,0);
if (ax.SquaredNorm()<0.1) ax=az^Point3f(0,1,0);
ax=ax.Normalize();
ay=(az^ax).Normalize();
//CubeMapSamp::Transform(ax,ay,az);
// make a snapshot!
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
GLfloat nearPlane = 0.1;
GLfloat farPlane = 200;
glOrtho(-1,+1,-1,+1, nearPlane, farPlane);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
gluLookAt( az[0],az[1],az[2], 0,0,0, ay[0], ay[1], ay[2] );
if (areas<0) {
// only once: compute areas
GLint vp[4];
glGetIntegerv( GL_VIEWPORT,vp );
float sc=extractCurrentScaleFactor()*(1/m.r);
areas=vp[2]*vp[3]*sc*sc;
}
mySettings.BindShaders();
m.Draw();
OpenGLSnap();
// interpret spanshot
int k=0,h=0;
//int* snapi=(int*)(&snap[0]);
int max=snapy*snapx;
int maxt=sum.size();
/*static*/
// vector<int> found(sum.size(), false );
for (int i=0; i<max; i++){
//if (snap[i]==0) printf(" ");
//sum[snap[i]&0x00ffffff]++;
//if (sum[snap[i]&0x00ffffff] ) |=mask;
/*
int dec=snap[i]&0x00ffffff;
if (!found[dec]) {
found[dec]=true;
sum[ dec ] += snap[i]>>24;
printf("[%d]",snap[i]>>24);
}*/
if (sum[ snap[i]&0x00ffffff ]>>24 !=div) {
sum[ snap[i]&0x00ffffff ] =
(sum[ snap[i]&0x00ffffff ]+(snap[i]>>24))&0x00ffffff | (div<<24);
//printf("[%d]",snap[i]>>24);
}
/*
sum[ snap[i]&0x00ffffff ] =
(
(
(sum[ snap[i]&0x00ffffff ] +
((sum[ snap[i]&0x00ffffff ]>>24)!=div)*(snap[i]>>24)
)&0x00ffffff
)
| (div<<24)
); */
}
/*
static Point3f sumv=Point3f(0,0,0);
sumv+=az;
printf("%d (%f %f %f) (%f %f %f)\n", div, az[0],az[1],az[2], sumv[0],sumv[1],sumv[2]);
*/
mask<<=1;
div++;
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
void AOgpu::Reset(Mol &m){
mySettings.SetForOffLine();
if (fakeTexture.size()==0) {
// Prepare And Load fake texture
fakeTexture.resize(hardSettings.TSIZE*hardSettings.TSIZE*3);
int k=0, i=0;
for (int x=0; x<hardSettings.TSIZE; x++)
for (int y=0; y<hardSettings.TSIZE; y++) {
fakeTexture[i++]=k&255;
fakeTexture[i++]=(k>>8)&255;
fakeTexture[i++]=(k>>16)&255;
k++;
}
m.DuplicateTexels(fakeTexture, hardSettings.TSIZE);
}
glActiveTextureARB(GL_TEXTURE0_ARB);
//glBindTexture(GL_TEXTURE_2D, molTexture);
//ReloadTexture(fakeTexture, false);
div=0;
if (sum.size()!=hardSettings.TSIZE*hardSettings.TSIZE) {
sum.resize(hardSettings.TSIZE*hardSettings.TSIZE,0);
} else {
sum.clear();
sum.resize(hardSettings.TSIZE*hardSettings.TSIZE,0);
}
mask=1;
areas=-1;
mySettings.BindShaders();
}
inline unsigned int BitCount(unsigned int x){
x=(((x>>1)&x)&(0x88888888)) + ((x<<1)^x)&(0xAAAAAAAA) ;
x = ((x>>2)&(0x33333333)) + ( x &(0x33333333));
x = ((x>>4)&(0x0F0F0F0F)) + ( x &(0x0F0F0F0F));
x = ((x>>8)&(0x00FF00FF)) + ( x &(0x00FF00FF));
return (x&0x0000FFFF)+(x>>16);
}
void AOgpu::GetFinalTexture(vector<Byte> &text,Mol &m){
int k=0,i=0;
//m.SmoothTexture( sum, hardSettings.TSIZE );
int maxt=sum.size();
/*for (int i=0; i<maxt; i++){
sum[i]=BitCount(sum[i]);
}*/
for (int i=0; i<maxt; i++){
sum[i]&=0x00ffffff;
}
m.FillTexture( text, sum, hardSettings.TSIZE, 4.0/float(div) /*8*2*255 / (div * areas )*/ );
m.DuplicateTexels(text, hardSettings.TSIZE);
}
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