opengl android 线宽

 GLES20.glLineWidth( 3f );

      private void drawCircle( float r, float g, float b, float a ) {
      for( int i = 0; i < circleBuffersesList.size(); ++i  ) {
      //頂点バッファの指定
       GLES20.glVertexAttribPointer( GLES.positionHandle, 3,
       GLES20.GL_FLOAT, false, 0, circleBuffersesList.get(i).vertexBuffer );
      //法線バッファの指定
       GLES20.glVertexAttribPointer( GLES.normalHandle, 3,
       GLES20.GL_FLOAT, false, 0, circleBuffersesList.get(i).normalBuffer );
      //描画
       setMaterial( r, g, b, a );
       circleBuffersesList.get(i).indexBuffer.position(0);
       GLES20.glLineWidth( 3f );
       GLES20.glDrawElements( GLES20.GL_LINE_LOOP,
       circleBuffersesList.get(i).indexBuffer.capacity(), GLES20.GL_UNSIGNED_BYTE, circleBuffersesList.get(i).indexBuffer );
       }
      }
  
 

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原文链接：blog.csdn.net/jacke121/article/details/102952564