8982f8f2ec
This two fragment shaders that exhibit undefined behavior. In GLSL, it is undefined to use implicit or explicit derivatives in non-uniform control flow [1]. The SPIR-V produced by glslang contained similar undefined behavior, which results in incorrect codegen with the amdvlk's LLPC shader compiler, and produces visually incorrect image. This PR fixes this issue by hoisting the sampling so that it's executed before discarding. It's a simple fix and may not be the optimial way to resolve this issue. [1] https://www.khronos.org/registry/OpenGL/specs/gl/GLSLangSpec.4.60.pdf p. 137. |
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| .. | ||
| models | ||
| shaders | ||
| textures | ||
| font.fnt | ||
| README.md | ||
| Robot-Medium-license.txt | ||
| Roboto-Medium.ttf | ||
Additional asset pack
Newer assets (textures and models) will no longer be added to the repository in order to keep it's size down. Especially HDR assets tend to be much larger than most of the ldr textures and compressing them is problematic due to the multi-platform target of the examples (Not all platforms support compressed HDR texture formats).
So these are provided as a separate download required to run some of the newer examples.
Examples that require assets from this pack will have a note in the header:
/*
* Vulkan Example
*
* Note: Requires the separate asset pack (see data/README.md)
*
*/
Getting the asset pack
Option 1: Run the python script
Run the download_assets.py python script which will download the asset pack and unpacks it into the appropriate folder.
Option 2: Manual download
Download the asset pack from http://vulkan.gpuinfo.org/downloads/vulkan_asset_pack.zip and extract it in the data directory.