This is for Vulkan preparation where all of this needs to run in a user-specified context so that this code can be moved out of the GL folder without depending on OpenGL's global state model.
The binding point needs to be part of the ShaderUniforms class because Vulkan will need this value to generate the declaration in the shader source.
There's still one issue here: Since OpenGL has no local render state, the buffer must be bound every time it is used. Once the code is better abstracted this should be moved to a higher level class that knows all associated data and how to set it up.
* split gl_shadowmap.cpp into a GL dependent and an API independent part.
* gl_drawinfo must be kept around for the HUD sprite because it connects the renderer with the hardware indpendent part of the engine.
src/gl/scene/gl_clipper.h:150:23: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare]
src/gl/dynlights/gl_aabbtree.cpp:137:24: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:137:34: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:137:44: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:139:6: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:139:30: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:139:54: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:142:6: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:143:3: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:144:3: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_aabbtree.cpp:167:6: warning: using integer absolute value function 'abs' when argument is of floating point type [-Wabsolute-value]
src/gl/dynlights/gl_shadowmap.cpp:163:31: warning: '&&' within '||' [-Wlogical-op-parentheses]
src/p_saveg.cpp:367:16: warning: comparison of integers of different signs: 'unsigned int' and 'int' [-Wsign-compare]
src/p_saveg.cpp:402:60: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare]
src/p_setup.cpp:1553:39: warning: format specifies type 'ptrdiff_t' (aka 'long') but the argument has type 'int' [-Wformat]
src/scripting/zscript/zcc_compile.cpp:293:74: warning: field 'AST' will be initialized after field 'mVersion' [-Wreorder]
src/swrenderer/drawers/r_thread.cpp:113:21: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare]
