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randomish seed image

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Dmitry V. Sokolov
2019-02-03 15:09:43 +01:00
parent 09bf2208e5
commit 6842f67bb7
2 changed files with 4 additions and 4 deletions
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tinyraytracer.cpp
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@@ -77,11 +77,11 @@ int main() {
compute_depthmap(width, height, fov, 23.f, spheres, zbuffer); compute_depthmap(width, height, fov, 23.f, spheres, zbuffer);
std::vector<unsigned char> framebuffer(width*height*3); std::vector<unsigned char> framebuffer(width*height*3);
for (size_t j=0; j<height; j++) { for (size_t j=0; j<height; j++) { // generate a random-ish image
for (size_t i=0; i<width; i++) { for (size_t i=0; i<width; i++) {
for (size_t d=0; d<3; d++) { framebuffer[(i+j*width)*3 + 0] = (rand()%256)*(sin(i*2*M_PI/200)+1)/2; // the sine generates vertical strips to ease focusing
framebuffer[(i+j*width)*3 + d] = 255*zbuffer[i+j*width]; framebuffer[(i+j*width)*3 + 1] = (rand()%256);
} framebuffer[(i+j*width)*3 + 2] = (rand()%256);
} }
} }