OpenGL线宽 [英] OpenGL Line Width

问题描述

在我的OpenGL应用程序中，它不允许我绘制大于十个像素的线.有没有办法使它绘制超过十个像素?

In my OpenGL app, it won't let me draw a line greater then ten pixels wide. Is there a way to make it draw more than ten pixels?

void OGL_Renderer::drawLine(int x, int y, int x2, int y2, int r, int g, int b, int a, int line_width)
{   
    glColor4ub(r, g, b, a);

    glLineWidth((GLfloat)line_width);
    glBegin(GL_LINES);
    glVertex2i(x, y);
    glVertex2i(x2, y2);
    glEnd();
    glLineWidth(1.0f);
}

推荐答案

您可以尝试绘制四边形.将其设置为您想要的线长，然后使其高至所需的线宽，然后旋转并将其定位到该线将要到达的位置.

You could try drawing a quad. Make it as wide as you want your line to be long, and tall as the line width you need, then rotate and position it where the line would go.

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