Files
nunuhara_xsystem4/shaders
kichikuou e00ba69546 3d: Fix skeletal animation on PowerVR GPUs
This fixes https://github.com/kichikuou/xsystem4-android/issues/14.

There appears to be a bug in the OpenGL ES implementation for PowerVR
that prevents row_major mat4x3 uniforms from loading correctly.

This changes bone_matrices from row_major mat4x3 to column_major mat3x4
and transposes them manually in the vertex shaders. (Column major mat4x3
cannot be used due to the UBO size limitation)
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