Uniform Class

[Max1412]

Write a (templated) class for uniforms so that the ShaderProgram can get objects of this class to update all uniforms when used

[Max1412]

Right now, all uniforms must be updated at once.

Mabye change it to:

Method 1

In ShaderProgram: int getUniformLocation(std::string name); void setUniform(std::string name, const vec3 & v); (overloaded)

Advantages:

• ShaderProgram does not have to store uniforms
• Single Uniforms can be updated without any redundand calls Disadvantages:
• use() will not update all uniforms
• locations have to be stored outside of ShaderProgram (e.g. in main)

Alternatively (like the cookbook)

• setUniform asks for the location every time it is called

Advantages:

• Locations do not have to be stored anywhere
• Least LOC in usage Disadvantages
• Redundand "getUniformLocation" calls

Advantages of both methods: No more template frenzy

[Max1412]

Current Version (not one of the above) has now the following Improvement:

• Set a flag if the (cpu-side) content of an uniform has been changed
• Only update uniforms whose flags are set

Advantages:

• Only changed uniforms will be updated

Disadvantages:

• calling SetContent() doesn't always mean the content has actually been changed
• Overhead through setting/checking the flag
• Still need separate vectors for uniforms in shader program