Question

Which OpenGL glUniform function uses four floats of a uniform individually?

Select one.
a.glUniform4t
b.glUniform
c.glUniformi
d.glUniformf4

Answer 1

The correct OpenGL function to use four floats to set a uniform variable is glUniform4f.

Step-by-step explanation:

The OpenGL glUniform function that uses four floats to set the value of a uniform variable individually is glUniform4f. This function takes five arguments: the first is the location of the uniform variable to be modified, which you obtain by using glGetUniformLocation.

The rest of the four arguments correspond to the four float values that you intend to pass to the shader's uniform variable. For example, calling glUniform4f(location, 0.0f, 1.0f, 0.5f, 1.0f) will set the uniform at the specified location to the vector (0.0, 1.0, 0.5, 1.0).

The correct answer is c.glUniform. The glUniform function in OpenGL is used to set uniform values for shader programs. The c.glUniform function allows you to set individual values of a uniform using four floats. For example, if you have a uniform vec4 variable in your shader program, you can use c.glUniform to set its values using four separate floats.