问题
I've been searching through glbenchmark.com for a device with screen size (width or height) greater than GL_MAX_TEXTURE_SIZE. I've found over a hundred devices with GL_MAX_VIEWPORT_WIDTH and GL_MAX_VIEWPORT_HEIGHT greater than GL_MAX_TEXTURE_SIZE (for example Acer A110), but no device with screen size greater than GL_MAX_TEXTURE_SIZE. So I assume there is no such device.
Is there any specification that guarantees that every device (or Android device) has screen size less or equal to GL_MAX_TEXTURE_SIZE? If not, is there any device that breaks my assumption?
回答1:
You can be sure that GL_MAX_TEXTURE_SIZE will be always bigger or equal to the screen size (SurfaceFlinger requires this)
回答2:
Maybe with newest devices with screen sizes over 2k pixels wide you may find that, but hardware vendors would not put a mobile GPU that is not capable of doing offscreen rendering to a texture target because the max texture size is smaller than the device screen. For old devices with smaller GL_MAX_TEXTURE_SIZE, the screen were also smaller than 1024x1024.
来源：https://stackoverflow.com/questions/14057154/is-there-any-android-device-with-screen-size-greater-than-gl-max-texture-size