hrydgard/ppsspp

cmake: Fix CMP0077 policy warnings.

Attempt to improve Discord Rich Presence

Disable "Edit & Continue" with VS debug mode.

Fixes #11629

SDL: Allow toggling fullscreen for GLES2 on desktops.

GPU: Ignore light params for shade mapping in shader id

Fixes #11627

They aren't part of the equation, so this simplifies and slightly reduces
number of shaders.

GE Debugger: Allow jumping to a specific prim

 into unknownbrackets-stencil-skip

Vulkan: Avoid using Vulkan by default

Madcatz Fightpad SFvTekken / Hori Mini Wired 4

Bugs on Adreno, some issues on Intel and AMD.
Let's instead prefer Direct3D 11 or GLES for now.

It seems like depth gets messed up either way on discard, but behaves
sorta better without the write to depth.

This reduces use of replaceAlpha, and reduces use of more complicated
blend states.  This simplifies fragment shaders a little.

Io: Ensure sign extension for error codes

Otherwise it doesn't always apply.

The ternary `cond ? EnumValue : IntValue` was not sign extending
consistently across compilers, but we actually want it to always sign
extend in either case.

This will make the most sense when frames are relatively stable, and works
great for GE dumps.

Headless: Allow startup using NULL draw context

Most tests have been 32-bit output, so haven't run into this.  Enables
tests with softgpu to generate 16-bit output.

Or maybe we should have a dummy Draw context...

GPU: Force use of indexes on cull mode flip

Since we flip in the index, it can't be pure in this case.

GPU: Properly flip cull on simple triangle lists