ofGLProgrammableRenderer::TYPE kills Alpha Blending

beginners
1

I Just started studying shader.
My shader works fine.

However when I change renderer to ofGLProgrammableRenderer::TYPE to activate shader, all of alpha blendings inside a draw block are disabled.

ofEnableAlphaBlending();
ofSetColor(255, 255, 255, myAlpha);
myImage.draw();  // setColor alpha doesn't work.
ofDisableAlphaBlending();

It seems that I do some misunderstanding.
Does anyone know why it happens and how to fix it?

Thx.

2

what does your vertex and fragment shader look like?

3

Hi, it seems bug on default frag shader, no?

ofEnableAlphaBlending();
ofSetColor(255, 255, 254, myAlpha); // no white
myImage.draw();  
ofDisableAlphaBlending();

(255, 255, 254) works fine.
(255, 255, 255) kills alpha.

A

4

That was not frag shader.
This commit already solve this issue.

A