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Using final KHR ray tracing extension: VK_KHR_acceleration_structure, VK_KHR_ray_tracing_pipeline and VK_KHR_ray_query

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mklefrancois 2020-11-23 11:33:51 +01:00
parent 7179569ec3
commit b26ff92473
80 changed files with 2446 additions and 2351 deletions
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16
ray_tracing_reflections/README.md
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@ -12,14 +12,14 @@ First, we will create a scene with two reflective planes and a multicolored cube
~~~~ C++
// Creation of the example
helloVk.loadModel(nvh::findFile("media/scenes/cube.obj", defaultSearchPaths),
helloVk.loadModel(nvh::findFile("media/scenes/cube.obj", defaultSearchPaths, true),
nvmath::translation_mat4(nvmath::vec3f(-2, 0, 0))
* nvmath::scale_mat4(nvmath::vec3f(.1f, 5.f, 5.f)));
helloVk.loadModel(nvh::findFile("media/scenes/cube.obj", defaultSearchPaths),
helloVk.loadModel(nvh::findFile("media/scenes/cube.obj", defaultSearchPaths, true),
nvmath::translation_mat4(nvmath::vec3f(2, 0, 0))
* nvmath::scale_mat4(nvmath::vec3f(.1f, 5.f, 5.f)));
helloVk.loadModel(nvh::findFile("media/scenes/cube_multi.obj", defaultSearchPaths));
helloVk.loadModel(nvh::findFile("media/scenes/plane.obj", defaultSearchPaths),
helloVk.loadModel(nvh::findFile("media/scenes/cube_multi.obj", defaultSearchPaths, true));
helloVk.loadModel(nvh::findFile("media/scenes/plane.obj", defaultSearchPaths, true),
nvmath::translation_mat4(nvmath::vec3f(0, -1, 0)));
~~~~
@ -44,7 +44,7 @@ Vulkan ray tracing allows recursive calls to traceRayEXT, up to a limit defined
In `createRtPipeline()` in `hello_vulkan.cpp`, bring the maximum recursion depth up to 10, making sure not to exceed the physical device's maximum recursion limit:
~~~~ C++
rayPipelineInfo.setMaxRecursionDepth(
rayPipelineInfo.setMaxPipelineRayRecursionDepth(
std::max(10u, m_rtProperties.maxRecursionDepth)); // Ray depth
~~~~
@ -203,7 +203,7 @@ Since the ray generation shader now handles attenuation, we no longer need to at
Finally, we no longer need to have a deep recursion setting in `createRtPipeline` -- just a depth of 2, one for the initial ray generation segment and another for shadow rays.
~~~~ C++
rayPipelineInfo.setMaxRecursionDepth(2); // Ray depth
rayPipelineInfo.setMaxPipelineRayRecursionDepth(2); // Ray depth
~~~~
In `raytrace.rgen`, we can now make the maximum ray depth significantly larger -- such as 100, for instance -- without causing a device lost error.
@ -246,9 +246,9 @@ Then test for the value for when to stop
break;
~~~~
Finally, in `main.cpp` in the `renderUI` function, we will add a slider to control the value.
Finally, in `main.cpp` after the `renderUI()` function call, we will add a slider to control the depth value.
~~~~ C++
ImGui::SliderInt("Max Depth", &helloVk.m_rtPushConstants.maxDepth, 1, 100);
ImGui::SliderInt("Max Depth", &helloVk.m_rtPushConstants.maxDepth, 1, 50);
~~~~