Create Uniform class

[Zomon333]

Create a class to handle the accessing of OpenGL Uniforms from the main program. To get a Uniform's location:

• GLint glGetUniformLocation(GLuint program, const char* name); (Note: GLint of Index changes upon shader relink. Needs a refresh() function.)

Needs control to understand the difference between:

• [ ] glUniform*(GLint location, Type value);
  • [ ] {1, 2, 3, 4} for var, vec2, vec3, vec4
  • [ ] {f, d, i, ui} for float, double, int, uint
  • [ ] bool -> Always express as int, 0=false, not 0 = true.
• [ ] glUniformv(GLint location, GLsizei count, const Type values);
  • [ ] Like above but used for single variables, an array index, or a value in a struct
• [ ] glUniformMatrix(GLint location, GLsizei count, GLboolean transpose, const GLfloat values);
  • [ ] {2, 3, 4} for mat2, mat3, mat4
  • [ ] {2x3, 3x2}, {2x4, 4x2}, {3x4, 4x3} for mat*
  • [ ] {f, d} for float, double
• [ ] glUniformMatrixv(GLint location, GLsizei count, GLboolean transpose, const GLfloat values);
  • [ ] Same as above

This will make a good reference for all the access types

[Zomon333]

We'll probably also want:

• [ ] cache(name, value) To store a uniform change in RAM but not in VRAM
• [ ] flushCache() To push stored changes into VRAM
• [ ] clear() To clear stored changes before entering VRAM
• [ ] update(name, value)

There's something to be said about pluralization of the caching features for use in uniform blocks. Uniform blocks will likely be it's own class, though. Consider:

• cache(std::vector<std::pair<char*,type>> values) To store a number of uniform changes in RAM but not in VRAM