Filtering of half-float textures on different mobile GPUs

• webgl-mountains

  2 11 1.4 TypeScript

  Icelandic terrain with different times of day.

During development on PC everything was fine, but testing on different mobile phones with various GPUs revealed noticeable visual differences in hardware FP16 texture filtering. I suspect that the ANGLE wrapper for WebGL always uses full-precision floating point values in both shaders and textures, because we’ve already encountered precision issues in shader calculations during development of the Iceland WebGL demo - they were seen only on mobile devices with native WebGL-to-OpenGL ES translation.

• webgl-reunion

  1 4 0.0 TypeScript

  WebGL Reunion demo

You can examine the source code of this shader here. As you can see, it uses highp precision for floats for precise and smooth interpolation of vertex positions.

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