TapirEngine is the 3D rendering engine used in RanceQuest.
This implements the minimum functionality that is needed to render the
first battle scene. The lighting is still incorrect.
Now parsed particle-effect definitions are cached in a hash map in the
plugin object. To make it possible, static part of `struct
particle_effect` and `struct particle_object` are factored out to
`struct pae` and `struct pae_object` respectively.
When there are multiple instances of a model, now they share a single
model object. Model objects are retained in a hash table until the
plugin is released, which is fine because Toushin Toshi 3 doesn't reuse
a plugin across scenes.
It visualizes the bounding sphere of the instance. Although it is only
called from dead code in Toushin Toshi 3, it's useful for debugging
shadow mapping.
This fixes broken shadow rendering e.g. when Nacht climbs a ladder.
Now update_bones() calculates the instance's bounding sphere which
is the minimum sphere containing the AABB of current bone coordinates.
This corresponds to the sphere that is displayed when calling
SetInstanceDebugDrawShadowVolume on the original ReignEngine.dll.
This fixes billboard rendering issue in some dungeons.
* For polygon models, use its AABB's center coordinates.
* Consider the camera angle, i.e. sort by view-space Z-coordinate
instead of world-space Z-coordinate.
Before this, the order of drawing was determined on an instance-by-
instance basis. Instances with even a single transparent material were
drawn after fully opaque instances.
After this, first the opaque meshes in all instances are drawn, and then
the transparent meshes are drawn from the nearest to the farthest.
This implements a parser for particle effect definition files (.pae)
and a set of field accessor functions for the RE_ITYPE_PARTICLE_EFFECT
instance type. Rendering of effects is not yet implemented.
There are two types of fog, linear fog and atmospheric scattering. The
formula for light scattering is incorrect (see the comment in
reign.v.glsl) and therefore not physically correct.
This is used to compute Y-positions of map objects.
It is called quite often, so this implementation creates and caches a
height map of the instance by (re)using the shader for shadow mapping.
This implements a Phong shading with ambient, diffuse and specular
components, using up to three directional lights and one specular light.
The light calculation is made to match the "high quality" 3D mode of
Toushin Toshi 3.
Plugins can implement this so that scene_print will print additional
information for the sprite. RE_plugin implements this to dump the 3D
scene information.
ReignEngine is the 3D rendering engine used in Toushin Toshi III, and is
the predecessor of the 3D engines for Rance Quest, Rance 9, Evenicle,
etc.
This implements minimal functionality to be able to draw the first 3D
dungeon scene. Many important parts such as motion and lighting are not
implemented yet.
kichikuou