QGLShaderprogram, multiple textures

[Mixpicles]

Hello, I would like to hand in two textures to the QGLSP.

glBindTexture(GL_TEXTURE_2D,fbo_render->texture() );
    edgeShader->setUniformValue("color_texture",0);
    glBindTexture(GL_TEXTURE_2D, fbo_pick->texture());
    edgeShader->setUniformValue("pick_texture",0);

glBindTexture(GL_TEXTURE_2D,fbo_render->texture() );
    edgeShader->setUniformValue("color_texture",0);
    glBindTexture(GL_TEXTURE_2D, fbo_pick->texture());
    edgeShader->setUniformValue("pick_texture",0);

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Both textures are fine and can displayed seperately without problems.

My Fragmentshader:

uniform sampler2D color_texture;
uniform sampler2D pick_texture;
 
void main() {
    // Set the output color of our current pixel
    gl_FragColor = texture2D(color_texture, gl_TexCoord[0].st);
}

uniform sampler2D color_texture;
uniform sampler2D pick_texture;

void main() {
    // Set the output color of our current pixel
    gl_FragColor = texture2D(color_texture, gl_TexCoord[0].st);
}

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For a start I would like to access the textures in the shader seperately.

Unfortunately I can only access the last bound texture.

glActiveTexture wont work, due to some issues with glew. Unfortunately again, I dont have time to fix my glew problems.


My question is: how can I use the qt stuff to sucessfully adress both bound textures simultaneously.


I will be very gratefull for hints leading to the solution of my predicament.