New Paste :: Recent Pastes:: Add Line Numbers
Proper blur by baldurk
void Init() { #define SIZE 128 glGenTextures(2, texture); float texarray[3 * SIZE * SIZE]; // generate a random texture for(int i=0; i < SIZE; i++) { for(int j=0; j < SIZE*3; j += 3) { texarray[j + (i*SIZE*3)] = float(rand()) / float(RAND_MAX); texarray[j + (i*SIZE*3) + 1] = float(rand()) / float(RAND_MAX);//texarray[j + (i*SIZE*3)]; texarray[j + (i*SIZE*3) + 2] = float(rand()) / float(RAND_MAX);//texarray[j + (i*SIZE*3)]; } } glBindTexture(GL_TEXTURE_2D, texture[0]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, SIZE, SIZE, 0, GL_RGB, GL_FLOAT, texarray); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); for(int q=0; q < reps; q++) { // set counter vars int i=0, j = 0; // do every pixel that has neighbours on all sides (N, NE, SW, etc) for(i=0; i < SIZE; i++) { for(j=0; j < (SIZE*3); j += 3) { if(j == (SIZE*3)-3 && i == SIZE-2) continue; // RED float total = texarray[j + (i*SIZE*3)]; float numpix = 1.0f; if(j <= (SIZE*3)-6) { total += texarray[j+3 + (i*SIZE*3)];numpix += 1.0f; } if(j >= 3) { total += texarray[j-3 + (i*SIZE*3)];numpix += 1.0f; } if(i <= SIZE-2) { total += texarray[j + ((i+1)*SIZE*3)];numpix += 1.0f; } if(i >= 2) { total += texarray[j + ((i-1)*SIZE*3)];numpix += 1.0f; } if(j <= (SIZE*3)-6 && i <= SIZE-2) { total += texarray[j+3 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(j <= (SIZE*3)-6 && i >= 2) { total += texarray[j+3 + ((i-1)*SIZE*3)];numpix += 1.0f; } if(j >= 3 && i <= SIZE-2) { total += texarray[j-3 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(j >= 3 && i >= 2) { total += texarray[j-3 + ((i-1)*SIZE*3)];numpix += 1.0f; } texarray[j + (i*SIZE*3)] = total/numpix; // GREEN total = texarray[j+1 + (i*SIZE*3)]; numpix = 1.0f; if(j <= (SIZE*3)-7) { total += texarray[j+4 + (i*SIZE*3)];numpix += 1.0f; } if(j >= 2) { total += texarray[j-2 + (i*SIZE*3)];numpix += 1.0f; } if(i <= SIZE-2) { total += texarray[j+1 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(i >= 2) { total += texarray[j+1 + ((i-1)*SIZE*3)];numpix += 1.0f; } if(j <= (SIZE*3)-7 && i <= SIZE-2) { total += texarray[j+4 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(j <= (SIZE*3)-7 && i >= 2) { total += texarray[j+4 + ((i-1)*SIZE*3)];numpix += 1.0f; } if(j >= 2 && i <= SIZE-2) { total += texarray[j-2 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(j >= 2 && i >= 2) { total += texarray[j-2 + ((i-1)*SIZE*3)];numpix += 1.0f; } texarray[j+1 + (i*SIZE*3)] = total/numpix; // BLUE total = texarray[j+2 + (i*SIZE*3)]; numpix = 1.0f; if(j <= (SIZE*3)-8) { total += texarray[j+5 + (i*SIZE*3)];numpix += 1.0f; } if(j >= 1) { total += texarray[j-1 + (i*SIZE*3)];numpix += 1.0f; } if(i <= SIZE-2) { total += texarray[j+2 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(i >= 2) { total += texarray[j+2 + ((i-1)*SIZE*3)];numpix += 1.0f; } if(j <= (SIZE*3)-8 && i <= SIZE-2) { total += texarray[j+5 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(j <= (SIZE*3)-8 && i >= 2) { total += texarray[j+5 + ((i-1)*SIZE*3)];numpix += 1.0f; } if(j >= 1 && i <= SIZE-2) { total += texarray[j-1 + ((i+1)*SIZE*3)];numpix += 1.0f; } if(j >= 1 && i >= 2) { total += texarray[j-1 + ((i-1)*SIZE*3)];numpix += 1.0f; } texarray[j+2 + (i*SIZE*3)] = total/numpix; } } } glBindTexture(GL_TEXTURE_2D, texture[1]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, SIZE, SIZE, 0, GL_RGB, GL_FLOAT, texarray); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); }
