OpenGL defines three texturing modes for different types of rendering. The first is GL_MODULATE, which modulates the current lighting and color information with the texture image. GL_DECAL is the second mode which only uses the texture image. Color and Lighting information will not affect the texture's appearance. The last mode is GL_BLEND, in which the texture image is blended with the current texture color and the current lighting and color information.
解决方案 »
免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货