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What to do with OpenGL ES in iOS 12?
Important:OpenGL ES was deprecated in iOS 12. To create high-performance code on GPUs, use the Metal framework instead. See Metal. Tuning Your OpenGL ES App The performance of OpenGL ES apps in iOS differs from that of OpenGL in OS X or other desktop operating systems.
Why does OpenGL not work on my iPhone?
Embedded GPUs are optimized for lower memory and power usage, using algorithms different from those a typical desktop or laptop GPU might use. Rendering your graphics data inefficiently can result in a poor frame rate or dramatically reduce the battery life of an iOS-based device.
Which is Frame Debugger for OpenGL ES 3.0?
On OpenGL ES 3.0–capable devices, the Frame Debugger also indicates which draw calls and shader instructions contribute most to rendering time. For more information about these tools, see Xcode OpenGL ES Tools Overview. Watch for OpenGL ES Errors in Xcode and Instruments
What kind of GPU does OpenGL ES use?
All GPUs used in iOS devices use tile-based deferred rendering (TBDR). When you call OpenGL ES functions to submit rendering commands to the hardware, the commands are buffered until a large list of commands is accumulated.
How to label an object in OpenGL ES?
Call the glLabelObjectEXTfunction to give an object a name to be shown when debugging and profiling. Listing 7-2illustrates using this function to label a vertex array object. If you use the GLKTextureLoaderclass to load texture data, it automatically labels the OpenGL ES texture objects it creates with their filenames.
What are the labels in OpenGL ES drawing?
When you use the GLKViewclass to draw OpenGL ES content, it automatically creates a “Rendering” group containing all commands in your drawing method. Any markers you create are nested within this group. Labels provide meaningful names for OpenGL ES objects, such as textures, shader programs, and vertex array objects.