gu: add a function to multiply 4x4 matrices #172
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Add guMtx44Concat() in both C and PS variants. The PS variant is more than 3 times faster that the C one; it's written in a separate file (and not in gu_psasm.S) because it uses a different naming of the matrix registers. These functions are especially useful when porting programs written for OpenGL, which uses 4x4 matrices.
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Tested and benchmarked with https://gitlab.com/mardy/benchmark-wii |
DacoTaco
approved these changes
May 2, 2024
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Add guMtx44Concat() in both C and PS variants. The PS variant is more than 3 times faster that the C one; it's written in a separate file (and not in gu_psasm.S) because it uses a different naming of the matrix registers.
These functions are especially useful when porting programs written for OpenGL, which uses 4x4 matrices.