Augmented reality shader programs

1. A computer-implemented method, comprising:

receiving, through an editor for designing augmented-reality effects, a plurality of shader programs each for an augmented-reality object to be rendered for an augmented-reality effect;

compiling each of the shader programs of the augmented-reality object separately into corresponding shader modules;

generating a merged shader module based on the shader modules;

analyzing, according to one or more criteria, the merged shader module to identify fragment-shader instructions and vertex-shader instructions;

splitting the merged shader module into a single fragment-shader module comprising the identified fragment-shader instructions and a single vertex-shader module comprising the identified vertex-shader instructions; and

providing the single fragment-shader module and the single vertex-shader module to a graphics processing unit (GPU) to render the augmented-reality objects.

2. The computer-implemented method of claim 1 , wherein compiling each of the shader programs further comprises compiling each of the shader programs separately into corresponding unlinked shader modules.

3. The computer-implemented method of claim 2 , wherein each of the unlinked shader modules includes unlinked bytecode.

4. The computer-implemented method of claim 2 , wherein generating the merged shader module further comprises linking each of the unlinked shader modules to form the merged shader module.

5. The computer-implemented method of claim 4 , wherein the merged shader module is a linked shader module.

6. The computer-implemented method of claim 1 , wherein analyzing the merged shader module further includes identifying a parameter of each of the shader modules that indicates the fragment-shader instructions of the respective shader module.

7. The computer-implemented method of claim 1 , wherein analyzing the merged shader module further includes identifying instructions of each of the shader modules that are nested within fragment-shader instructions of the respective shader module.

8. The computer-implemented method of claim 1 , wherein analyzing the merged shader module further includes identifying instructions of each of the shader modules that are dependent from fragment-shader instructions of the respective shader module.

9. One or more computer-readable non-transitory storage media embodying software that is operable when executed to:

receive, through an editor for designing augmented-reality effects, a plurality of shader programs each for an augmented-reality object to be rendered for an augmented-reality effect;

compile each of the shader programs of the augmented-reality object separately into corresponding shader modules;

generate a merged shader module based on the shader modules;

analyze, according to one or more criteria, the merged shader module to identify fragment-shader instructions and vertex-shader instructions;

split the merged shader module into a single fragment-shader module comprising the identified fragment-shader instructions and a single vertex-shader module comprising the identified vertex-shader instructions; and

provide the single fragment-shader module and the single vertex-shader module to a graphics processing unit (GPU) to render the augmented-reality objects.

10. The computer-readable non-transitory storage media of claim 9 , wherein compiling each of the shader programs further comprises compiling each of the shader programs separately into corresponding unlinked shader modules.

11. The computer-readable non-transitory storage media of claim 10 , wherein each of the unlinked shader modules includes unlinked bytecode.

12. The computer-readable non-transitory storage media of claim 10 , wherein generating the merged shader module further comprises linking each of the unlinked shader modules to form the merged shader module.

13. The computer-readable non-transitory storage media of claim 12 , wherein the merged shader module is a linked shader module.

14. The computer-readable non-transitory storage media of claim 9 , wherein analyzing the merged shader module further includes identifying a parameter of each of the shader modules that indicates the fragment-shader instructions of the respective shader module.

15. The computer-readable non-transitory storage media of claim 9 , wherein analyzing the merged shader module further includes identifying instructions of each of the shader modules that are nested within fragment-shader instructions of the respective shader module.

16. The computer-readable non-transitory storage media of claim 9 , wherein analyzing the merged shader module further includes identifying instructions of each of the shader modules that are dependent from fragment-shader instructions of the respective shader module.

17. A system comprising:

one or more processors; and a memory coupled to the processors comprising instructions executable by the processors, the processors being operable when executing the instructions to:

receive, through an editor for designing augmented-reality effects, a plurality of shader programs each for an augmented-reality object of a plurality of augmented-reality objects to be rendered for an augmented-reality effect;

compile each of the shader programs of augmented-reality object separately into corresponding shader modules;

generate a merged shader module based on the shader modules;

analyze, according to one or more criteria, the merged shader module to identify fragment-shader instructions and vertex-shader instructions;

split the merged shader module into a single fragment-shader module comprising the identified fragment-shader instructions and a single vertex-shader module comprising the identified vertex-shader instructions; and

provide the single fragment-shader module and the single vertex-shader module to a graphics processing unit (GPU) to render the augmented-reality objects.

18. The system of claim 17 , wherein compiling each of the shader programs further comprises compiling each of the shader programs separately into corresponding unlinked shader modules.

19. The system of claim 18 , wherein each of the unlinked shader modules includes unlinked bytecode.

20. The system of claim 18 , wherein generating the merged shader module further comprises linking each of the unlinked shader modules to form the merged shader module.