I have already asked about this on another forum and after being unable to resolve the issue I thought I'd try here. I have been trying to fix this for a very very very long time and its very frustrating...

Basically I want to draw a texture on top of a face like a decal but i also want the textures color to be blended with the faces color(WITHOUT MODIFYING THE ACTUAL FACE! ONLY TEXTURE!)

 glEnable(GL_ALPHA_TEST);
 glAlphaFunc(GL_GREATER, 0.0f);

i would suggest you to use a shader on that face then you will simply bind a texture (that with clouds) read the color and if the color is bigger than 0 you will perform blending (in this case you make your own one) anyway what sort of glBlendFUnc are you using i am pretty sure this will help:

http://www.andersriggelsen.dk/glblendfunc.php

and

use gl_src_color and maybe gl_dst_color, becasue i see that your texture has wrong alpha values, additionally i am not sure but you will have to disable depth testing for this case,

so the answer is simple use shader for that.

I dont really know anything at all about shaders. Can you give me an example shader and how to implement it into the rendering (besides the compiling which i know how to do)

also i swear i have tried just about every combination possible for glblendfunc and glblendfuncseparate but i will try out that tool

Not sure I entirely understand what you want to achieve, but try something like this:

// Draw face without blending "base color"
drawSolid();

// Draw blended on top of already drawn faces
glDepthFunc(GL_EQUAL);

glBlendFunc(..);
glEnable(GL_BLEND);

drawBlended();

Could do the same with modulate instead of blend, or some other combination, or even draw several blending passes on top.

Out of principle I don’t help people who are using the fixed-function pipeline.#1: It’s just encouraging bad behavior. Bad dog.#2: It’s like someone asking you to help figure out how to use his or her 1980 Apple III when there is a 2017 Alienware L. Spiro Supreme Mega Ultra Plus Neo Giga Mecha Panties Over-9,000 PC sitting right next to him or her. You’re helping for a bad reason (he or she is just intimidated by the more-complex look of the newer machine), and in the end you’ll just have to re-teach him or her once he or she finally moves on to the bigger better machine, so you’re wasting your time anyway.I can’t really understand what you are trying to do. It doesn’t help that the image you showed of what you want to achieve (“desired”) is for some reason the only image that is basically impossible to see. That’s the one image that should be absolutely clearest and easiest to see.My best guess: Your model has vertex colors or a material and you want to blend them with a texture.#1: [font='courier new', courier, monospace]glBlendFunc()[/font] and [font='courier new', courier, monospace]glAlphaFunc()[/font] apply to how the final pixel mixes with the back buffer (or gets discarded). Disable blending and alpha testing. You’re not trying to blend with the back buffer, you are trying to blend a texture over a model’s material/vertex color.#2: [font='courier new', courier, monospace]glTexEnvi()[/font]. Read carefully how pixels travel through the texture-stage states and carefully figure out what settings you need to apply to get the result you want. Since you posted that [font='courier new', courier, monospace]GL_MODULATE[/font] isn’t working for you, once again I don’t know what you are trying to do so I can’t really make many suggestions, but the result you posted of [font='courier new', courier, monospace]GL_MODULATE[/font] isn’t the result I would have expected, so you may not have gotten the pname value correct. Here is the thought process:#1: What is source 0? The model’s base color.[font='courier new', courier, monospace]::glTexEnvi( GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PREVIOUS );[/font]#2: What is source 1? The texture in slot 0.[font='courier new', courier, monospace]::glTexEnvi( GL_TEXTURE_ENV, GL_SRC1_RGB, GL_TEXTURE0 );[/font]#3: How do you want to combine these 2 inputs? Multiply them?[font='courier new', courier, monospace]::glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE );[/font]Repeat for alpha. I don’t know what you want to do, but if you use these 3 steps and carefully pick the sources (which I am fairly sure I already got correct above) and the way in which they are combined you should be able to find your result. Or you should just switch to shaders and make whatever you want happen. L. Spiro