* render/bgfx: Improved clearing and blending. Added prescale support. Fixes MT07586, MT07587, MT08084.
* render/bgfx: Fixed blend and tint handling. (Fixes Github #1953).
* render/bgfx/blendreader.cpp: Support non-separated blend mode specification for BGFX effects.
* render/bgfx: Reworked how horizontally-padded screen textures are handled. Likely fixes MT08512 and MT08505.
* render/bgfx: Ensure that a texture's width margin is updated in all cases.
* render/d3d/d3dhlsl.cpp: Fixed tinting in HLSL post-processing mode.
* render/d3d/d3dhlsl.cpp: Avoid most redundant state-setting calls. Reduces D3D API calls by about 90% on fruit machine drivers.
* render/d3d/d3dhlsl.cpp: Assign SourceDims and QuadDims uniforms to only those effects that use them.
* machine/laserdsc.cpp: Always add video quad to screen container, adjust tint based on m_videoenable instead.
Correct units of some parameters (they are MHz, not Hz) and correct one
default (color carrier should be 3.57 MHz, not 35.7). Use a step size of
1/8800 MHz for the color carrier so that the NTSC value of 315/88 MHz
can be exactly represented (to float precision).
Made pbobble parent of bublbust, as it seems to be more widespread and
more complete. Also fixed some ROM labels for bublbust.
Made tbyahhoo parent of mtwinbee as the latter has substantial content
removed rather than being localised, making it less complete.
Applied srcclean to JSON files in bgfx subtree.
* Remove broken scanline uniform from post_pass
* Add 3D LUT to HLSL
* Allow individual LUTs for screen and UI
* WIP: Port 3D LUT to BGFX
* Finish porting LUT to BGFX
* Add individual phosphor color conversion for HLSL
new file: hlsl/chroma.fx
Shader for converting xyY3 to sRGB
modified: hlsl/phosphor.fx
Minor changes to emphasize idea that phosphors are color
agnostic
modified: hlsl/post.fx
Conversion from signal RGB to xyY3
modified: src/osd/modules/render/d3d/d3dhlsl.cpp
modified: src/osd/modules/render/d3d/d3dhlsl.h
modified: src/osd/windows/winmain.cpp
modified: src/osd/windows/winmain.h
* Add phosphor examples and update presets
* Port phosphor color shaders to BGFX
* Fix missing newlines at EOF
- removed POT texture size from shadow mask in HLSL, U/V size is now simply the percentage of the actual texture size
- adjusted display names of options
- if specified all textures (.png) within the same directoy of the given texture will be selectable via slider in the UI
- also added slider for "shadow mask tile mode" to HLSL chain
