Determined by keping a single directional light source enabled, as they are
not subject to attenuation (having no position), and comparing with
original software renderer.
Default DirectX material reflects all diffuse light, so 1.0f coefficient is
likely correct.
My initial idea that GRIM would use specular likely came from a difference
between DirectX and OpenGL lighting for spotlights: DirectX allows for an
extra penumbra angle, allowing stronger center spots while maintaining a
smooth fade (which I emulated with a fixed 2.0 exponent).
Also, specular involves an extra light color value and material definition
for specular reflection, which are not visible in game data files.
All this making the use of specular very unlikely to match original renderer.
Use bit 0x20 in the mesh face flags to disable ligthing. This
fixes the problem that once a previous screen is used as
texture (e.g. in the intro or for the transition effects
in set kab when walking eastwards or westwards), it is shown
too dark due to the applied static lighting for overworld
actors.
- if Lua_V2::SetActorGlobalAlpha() is called with a mesh name,
set a mesh-specific alpha value / mode
- use this alpha value in drawEMIModelFace()
- fixes the problem that the whole actor vanishes in some scenes
(e.g. when entering or leaving the porch of the of LUA bar)
- delete screenshot after texture is created
- free _data[] entries in BitmapData::freeData()
- destroy _specialtyTextures[] entries in
graphic driver's destructors
Per convention, in residualvm the default GL current color
should be (1.0f, 1.0f, 1.0f). If a function changes the color,
it is required to reset it before returning.
This fixes the issue that some videos were not correctly displayed
until the next glColor call (e.g. when drawing the sub-titles) was
issued.
- instead of re-calculating the color values when dimming the screen,
better draw a half-transparent plane after drawing all non-overworld
characters
- fixes the issue that overworld actors were dimmed and that the
pause screen is transparent when the inventory is open
Bit 0x40000 in the mesh face flags (set only in the intro) should
enable blending, too. This fix lets the various screens of the intro
fade into each other.
