带行的glPolygonOffset()错误 [英] glPolygonOffset() bugs with lines

问题描述

我有以下代码:

glEnable(GL_POLYGON_OFFSET_LINE);
glPolygonOffset(1,1); // or 40,40 etc... doesnt help at all

但是这些线仍然在争战，这是常见的错误还是什么...?我的线是1.0f厚，我在场景的最后画线.

But the lines are still z-fighting, is this common bug or something...? My lines are 1.0f thick and i draw the lines last in the scene.

我还禁用了GL_ALPHA_TEST和GL_LINE_SMOOTH并启用了GL_BLEND和GL_COLOR_LOGIC_OP

Also i have disable GL_ALPHA_TEST and GL_LINE_SMOOTH and enabled GL_BLEND and GL_COLOR_LOGIC_OP

编辑:我已经尝试了GL_POLYGON_OFFSET_FILL，它没有帮助.

i have already tried GL_POLYGON_OFFSET_FILL, it doesnt help.

推荐答案

GL_POLYGON_OFFSET_LINE仅适用于使用glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)进行多边形渲染.如果使用GL_LINES绘制图元，则该图不起作用.在这种情况下，您将必须手动偏移顶点.

GL_POLYGON_OFFSET_LINE only works for polygon rendering with glPolygonMode(GL_FRONT_AND_BACK, GL_LINE). If you're drawing primitives with GL_LINES it doesn't work. In this case you'll have to manually offset the vertices.

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