consistent naming of structs and their typedefs

do not try to use one distinct render group for each different shader

prepare implementation of primitives

fix includes in glcontext.c

implement edge-triggered key press/release

add dynamic reload of all shaders

refactor shader management - resolves #684

add option to enable ASan

remove pre-defined dummy textures by introducing conditional compilation for shaders

fix incorrect flip of viewport y-axis

(0) -100 -10 tip

mercurial