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Added quick hints on how to debug rendering issues

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Mikko Mononen 2014-04-01 16:33:49 +03:00
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commit 885844a845
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README.md
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@ -51,6 +51,18 @@ nvgFillColor(vg, nvgRGBA(255,192,0,255));
nvgFill(vg);
```
## Rendering is wrong, what to do?
- make sure you have created NanoVG context using one of the `nvgCreatexxx()` calls
- make sure you have initialised OpenGL with stencil buffer
- make sure you have cleared stencil buffer
- make sure you have following OpenGL state between calls to `nvgBeginFrame()` and `nvgEndFrame()`:
- `glEnable(GL_CULL_FACE)`
- `glCullFace(GL_BACK)`
- `glEnable(GL_BLEND)`
- `glDisable(GL_DEPTH_TEST)`
- if the problem still persists, please report an issue!
## API Reference
See the header file [nanovg.h](/src/nanovg.h) for API reference.