Tool/software: Linux
Our product runs well with 60000 triangle,and the fps is 16.
But when we render 600000 triangles, some strange rendering images comes out
I want to konw what will casue such kind of image, as I konw too much triangles will only effect the fps, but not the rendering result.
1.linux sdk:psdk 3.2.0.1
2.application based on surround view
3.window surface
4.use drm to filp, and gbm suface to create eglsurface. the display interface is eglswapbuffer
5.glgeterror is 0, no error
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more info:
I call eglswapinterval(2), and the rendering image sometimes without tearing, But using eglswapinterval(0), the frequency of tearing is even higher .
But with 60000 triangle we do not find tearing so far.
So is that true rendering too much triangle will cause rendering error.
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Another problem with triangle numbers:
When changing the rendering triangle number, the rendering result will slightly transform
The first frame we draw a full screen quad to show an UI
The second frame we draw 60000 triangle to show the surround view and other 3D model
The third frame we do exactly the second frame do
But the second frame is wrong, the image which contains two rendering region, the left region is narrow which is not expected.
And the third frame is correct, the left region is larger than the sceond frame. Then we keep rendering, all the frame is correct after second frame
To create regions, we use glviewport api.
Is this problem may be the same reason?
When we draw a full quad, the gpu frequency may be lower, but when we suddenly increase the triangle num, gpu is not ready to handle that.
