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Mandelbrot CL

A realtime mandelbrot renderer, written in C++11 with SDL2, OpenGL and OpenCL.

Mandelbrot

Features

double precision support, just uncomment the following in CMakeLists.txt

#add_definitions( -DUSE_DOUBLE )

The renderer renders the Mandelbrot Set with continuously new samples for nice Antialiasing. A tent filter with a combined Tausworthe and Linear Congruential Generator random generator was used for achieving this. This kind of 'overkill' feature is build in since the main goal is a realtime Pathtracer.

There is also an alternative Mandelbrot implementation and a Julia Set in the opencl file just adjust this line to either 'julia_set' or 'mandelbrot_alt' in GLMain.cpp

oclRenderer.reset(new OCLRenderer(width, height, 0, "mandelbrot", "kernels/default.cl"));

Controls

  • Mouse
    • Left button + motion drag the screen
    • Right button + vertical motion zoom in and out
    • Mouse wheel zoom
  • Keyboard
    • p save rendered image
    • c new random colors
    • + increase the iterations by a factor of 1.25 (default 300)
    • - decrease the iterations by a factor of 0.8