This is a huge patch, including:
* add a LitRenderModifier abstract base class for RenderModifiers with
shadow+light
* add LitRenderModifiers for all types of models
* add STREAM_TEXGENTOUV1 to request generation of shadow map texcoords
for models
* create facilities to pass the texture matrix from the
RenderModifier (fragment stage) to the ModelRenderer (vertex stage)
* split ambient and diffuse terms of lighting until further down in the
pipeline; this is necessary since shadowed regions receive only
ambient light
* small improvement in how RenderPathVertexShader scales to a greater
number of vertex shaders
This was SVN commit r3690.
- explicitly split ambient and diffuse
- add renderer.shadowZBias to bias depths in the depth texture
and avoid flickering artifacts caused by Z fighting
- cantabrian_generated uses new light values so that shadows aren't
pitch
black
This was SVN commit r3508.
Add an "instancing" model renderer to improve rendering of
non-transparent,
unanimated models. This renderer is used when the vertexshader path is
rendering path is used.
This was SVN commit r3052.
Add Ogl_Shader and Ogl_Program handle types for shaders/programs loaded
from
files.
In the vertexshader render path, use a vertex program for lighting for
optimization.
This was SVN commit r2853.
