Alabaster Dawn Android port v0.7.7

v0.7.7

The water was not being drawn on any device, and the port's own safety net was why.

• Water, everywhere. The engine keeps v_barycentric alive with vec3(-1e30) in fragment shaders; the
  water fragments run at mediump, which cannot hold 1e30, so where the varying is garbage the branch
  fired and the fragment returned before drawing. The water shaders are served at highp in both stages now.
• Water links on Mali again. Two lib/water.glsl uniforms took each stage's default precision; the water
  fragments are served with the vertex stage's — only on devices whose own compiler refused the game's
  declarations, because serving it elsewhere breaks Adreno's link instead.
• The array lift is served on every device, instead of asking the document-start probe first: the probe
  can accept declarations the engine then refuses, and that costs a frozen boot (issue #5), while lifting is
  free — the same declarations, spelled the way the game's own vertex shaders spell them.
• A shader the engine refuses now says which bytes it was served.
• 40 fps rung on the battery switch's slider (20/30/40/45/60).
• window= and canvas= in the diagnostics facts, for "the picture doesn't fill the screen" reports.

Issues ·
fuller notes