OpenGL shader ignore texture

Question

I have recently implemented Awesomium into a OpenGL application. When I load Awesomium in to a texture OpenGL includes it in its shading process regardless of whether I draw the texture onto a surface or not.

I am trying to trace down the line of code that is processing the texture into the shaders, is there a specific function OpenGL uses to access all textures or a way to tell OpenGL to ignore the texture?

Update texture block

glBindTexture(GL_TEXTURE_2D, SkypeHUD);
glTexImage2D(GL_TEXTURE_2D, 0, 4, AwesomiumW, AwesomiumH, 0, GL_BGRA, GL_UNSIGNED_BYTE, surface->buffer());

Create texture block

glBindTexture(GL_TEXTURE_2D, SkypeHUD);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
glBindTexture(GL_TEXTURE_2D, 0);

Drawing the scene without the texture being loaded: http://puu.sh/2bVTV Drawing the scene after I have loaded the texture: http://puu.sh/2bVUb

You can see it blending the google texture in over the others.

datenwolf datenwolf · Accepted Answer · 2013-03-04T13:26:18

Texture enable/disable should be controlled by the shader code, not some client binding state. Anyway, you most likely use several texture units (glActiveTexture); the texture binding is individual to each unit, so you'll have to do some leg work and unbind textures from each unit if you want to go this route.

OpenGL shader ignore texture

1 Answers