openframeworks / openframeworks/openFrameworks
Cannot set numColorBuffers to zero in ofFbo
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bug
core
- Dominant language
- C++
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Description
If I try to set an FBO up exclusively for rendering depth information like this...
ofFbo::Settings s;
s.depthStencilAsTexture = true;
s.depthStencilInternalFormat = GL_DEPTH_COMPONENT24;
s.useDepth = true;
s.numColorbuffers = 0;
s.width = 1024;
s.height = 1024;
fbo.allocate(s);
...I get the following error when I call fbo.getDepthTexture().draw()...
[ofFbo:error] FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER
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Research direction
Start by tracing ofFbo::Settings through fbo.allocate() and the framebuffer setup used by getDepthTexture().draw(). Reproduce the shown configuration with numColorbuffers set to 0, then verify that a depth-only framebuffer becomes complete and the depth texture can be drawn without FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100