zach2good / tinyraytracer-interactive

tinyraytracer by ssloy, but rendering to the screen in realtime with SDL2 and dear imgui

tinyraytracer-interactive

tinyraytracer, but rendering to the screen in realtime

Original

https://github.com/ssloy/tinyraytracer

Points of Interest

Instead of writing the results of the raytracing out to a .ppm file like in the original, the framebuffer data is pushed into an OpenGL texture: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_FLOAT, data);, this is easily presented by imgui: ImGui::Image((ImTextureID)texture_id, ImVec2(width, height));.

For clarity, and in order to keep the focus on ssloy's raytracing code, I've kept unrelated code away from tinyraytracer.cpp.

At the cost of an increased build time, all dependencies are built from source and statically linked to the final binary.

Build

git clone --recurse-submodules https://github.com/zach2good/tinyraytracer-interactive.git
cd tinyraytracer-interactive
mkdir build
cd build
cmake ..
make

Tested On

macOS Mojave 10.14 - Apple LLVM version 10.0.0 (clang-1000.11.45.5)
macOS Mojave 10.14 - clang version 6.0.1 (tags/RELEASE_601/final)

Screenshot