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* Various CPU updatesiCatButler2016-07-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Sign extend values read using LH - Add conversion functions to represent Signed/Unsigned 16-bit ranges - Add overflow and truncation functions for 16-bit ranges - Sign extend imm value in ADD(U) - Add component overflow and truncation to ADD/SUB functions - Construct new value in logic operators where result using inputs is undefined - Return a valid W component from logic operators (if either input has one) - Compare against high value (y), then low value (x) in less than operators - Use doubles and implement overflow for Multiply operations to try to increase accuracy - Use unsigned values in both MUL and DIV operations to make output as accurate as possible - Implement several variants of shift operators. Trying both arithmetically correct and more analytical approaches with varying success. Debug updates - Added ability to force all values to be equal to low precision values before operating on them - Added feature to test output of operations against a tolerance and print only those which fail GPU updates - Colour vertices with valid XY coordinates but no W as cyan to make them easier to spot - Remove cyan colouring for stale vertices (wasn't useful) - Added ability to skip debug rendering when needed (like seeing the output of offscreen rendering applied to a sprite). - Added new mode which shows primitive type
* Initial PGXP CPU commitiCatButler2016-06-071-0/+49
- Restructured project to base interface on PSX instructions - Support for all relevant CPU arithmetic and logic instructions - Debug output available via deferred PGXP calls - Remove most dependencies on PCSXR - Still very much a work in progress (lots of errors) - Add extra debug information to GPU plugin (w values)