I want to put a texture with BLEND mode on an object, so that the color can be seen through. I already did this, but I would like to set the strength of the effect. This is my initialisation code:
You can now use the constant color to control the amount of base color and reflection texture. If constant color is 1.0, you have 100% reflection texture, and if it’s 0.0, you have 100% base color.
GL_COMBINE_EXT is from the extension EXT_texture_env_combine, which is a part of the standard since OpenGL 1.3. When it became standard, the EXT-suffix was removed. Get the latest glext.h from here for the missing constants.