More specifically, this also fixes crashes by Citra trying to load a src2 register even if the current instruction does not use that.

Makes for cleaner and faster code.

This allows for proper emulation of the different CMP/LRP/MAD instructions.

Pica/CommandProcessor: Fix vertex decoding if multiple memory areas are accessed for different attributes.

This effectively adds support for a lot texture formats in the rasterizer.

- Linear simply indicates that the mapped physical address is always MappedVAddr+0x0C000000, thus this memory can be used for hardware devices' DMA (such as the GPU).

The affected code is no longer limited by compiler support on that platform.

Double-clicking a texture parameter command in the pica command lists will spawn these as a new tab in the pica command list dock area.