Cxbx-reloaded: XDK sample issues

[PatrickvL]

Here a list of known issues for XDK samples.

For each issue we fix, titles might improve too, so it's important to get these working correctly.
(Note : the below results are tested against https://github.com/PatrickvL/Cxbx-Reloaded/commits/DrawingPrimitives but unless otherwise noted, are equally problematic in master too)

• BeginPush : Only DrawPrimitiveUP-mode is fast and shows correctly faded dot-streaks. BeginPush-mode is much slower, and Begin-mode even moreso. Both show swizzled dots. Help screen lacks gamepad texture.
• Benchmark : Nearly perfect - only adding lights (with black button) doesn't seem to work
• BumpDemo : Full effect doesn't work, cogs stay black (probably a render-state-related issue, Dxbx could draw this correctly)
• Billboard : Perfect. (Only Debug builds are very slow - roughly 1 FPS.)
• CompressedVertices : Teapot doesn't show because a vertex shader compilation fails, due to it's use of register v9 which isn't present in the vertex declaration (fixed recently)
• CubeMap : Teapot stays black and doesn't reflect, due to SetRenderTarget not targetting the correct surfaces (the six sides of the cube texture), mainly because cube-textures don't work well either (fixed recently)
• DisplacementMap : Displacement effect doesn't draw (needs more investigation)
• Explosion : When "rendering with z-sprites", the explosions are all behind the landscape, also this mode is slower than "rendering with billboards" which shows correct z-ordering (needs more investigation)
• FocusBlur : Many of the pixel shader effects don't seem to work correctly (possibly pixel-shader related)
  
  
  
  • ModifyPixelShader : None of the pixel shader alteration-options seem to work (no discernable effect)
  
  
  • MotionBlur : Blurring doesn't work - screen is very dark. Disabling the blur effect results in seemingly normal drawing
  
  
• NoSortAlphaBlend : Effect doesn't seem to work correctly
• Patch : Object isn't visible (only background, labels and menu)
• PixelShader : A few changes to the active pixel shaders don't seem to have effect
• PointSprites : Nearly perfect - only the help screen gamepad texture doesn't show
• PolynormalTextureMaps : Beautifull effect, but possibly incorrectly drawn
• PushBuffer : No visible effect, only background and labels
• Tiling : Actual tiling isn't implemented, but the effects work. Help image isn't visible, and screen turns black (never returns) when pressing the White button.

TODO: Add more

[x1nixmzeng]

The vibration issue is interesting. What exception does it raise? @Voxel9

[PatrickvL]

Fur crashes because our support of volume textures is near-non-existing and buggy

[PatrickvL]

Help screen is drawn using a quallist primitive. My DrawingPrimitives branch draws these correctly - we're striving to iron out a few regressions in that branch so everyone can benefit

[Voxel9]

@x1nixmzeng It basically just raises this exception:

Cxbx-Reloaded
---------------------------
Received Exception Code 0xC0000005 @ EIP := 0x547B18AA

  Press "OK" to terminate emulation.
  Press "Cancel" to debug.
---------------------------
OK   Cancel   
---------------------------

KrnlDebug generated from the debug build of cxbx-r for reference: KrnlDebug.txt

[NZJenkins]

BumpDemo full effect works

[PatrickvL]

This issue needs updating since a lot has improved since we've last looked at this.
However, a few notable regressions are worth investigating, as these may improve games as well :

• DisplacementMap : full effect still not working
• FocusBlur : black screen, except when entire blur effect is disabled
• Trees : only one tree is rendered, others only show a trunk, and the ground shows black spots
• TrueTypeFont : texts rendered in various fonts isn't visible
• Patch : Failed to create vertex declaration (due to a tesselation token)