F3DEX3: fix ambient light support, adjust viewport for new Max Z #443

Job	Run time
Linux (GLideN64 (x64 Mupen64Plus-CLI))	2m 59s
Windows (GLideN64 (x64 Project64-Qt))	6m 22s
Linux (GLideN64 (x64 Mupen64Plus-Qt))	3m 37s
Windows (GLideN64 (x86 Project64-Qt))	6m 49s
Windows (GLideN64 (x64 Project64-WTL))	4m 47s
Windows (GLideN64 (x86 Project64-WTL))	5m 25s
Windows (GLideN64 (x64 Mupen64Plus-CLI))	5m 25s
Windows (GLideN64 (x86 Mupen64Plus-CLI))	5m 0s
Windows (GLideN64 (x64 Mupen64Plus-Qt))	8m 10s
Release	0s
	48m 34s

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