Tagged Questions

1
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Stencil buffer appears to not be decrementing values correctly

I'm attempting to use the stencil buffer as a clipper for my UI system, but I'm having trouble debugging a problem I'm running in to. This is what I'm doing: A widget can pass a rectangle to the the ...
0
votes
0answers
202 views

sdl stencil buffer [closed]

I am trying to use the stencil buffer for rendering reflection and am working with SDL and OpenGL. When I give the command SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE,8),I get a return value of 0 ...
2
votes
1answer
2k views

How can I write only to the stencil buffer in OpenGL ES 2.0?

I'd like to write to the stencil buffer without incurring the cost of my expensive shaders. As I understand it, I write to the stencil buffer as a 'side effect' of rendering something. In this first ...