Okay. In all honesty, I'm not 100% sure what the 33 and 13 actually mean. Especially the latter one, the precision. The docs say:
precision Specifies a pointer to the location in which the log2 of the precision of the format is returned. So, if that number is the log2 of the precision, the precision must be 2^13, which is 8192. So, yeah, I don't really know what that number represents. On Wednesday, January 30, 2013 2:38:21 PM UTC-6, RichardC wrote: > > Those number look correct. High Precision support is NOT required to be > implemented in the fragment shader and if your implementation does not > support high precision you will get 0s from the glGetShaderPrecisionFormat > query. > > On Wednesday, January 30, 2013 8:32:43 PM UTC, bob wrote: >> >> Oh, ok. Thanks. >> >> It works if I do this: >> >> GLES20.glGetShaderPrecisionFormat(GLES20.GL_FRAGMENT_SHADER, >> GLES20.GL_MEDIUM_FLOAT, range, 0, precision, 0); >> >> range = [33, 33] >> precision = [13] >> >> >> >> On Wednesday, January 30, 2013 2:27:26 PM UTC-6, RichardC wrote: >>> >>> 0 means precision format is not supported >>> >>> *"If a high precision floating-point format is not supported for >>> fragment shaders, calling glGetShaderPrecisionFormat with arguments >>> GL_FRAGMENT_SHADER and GL_HIGH_FLOAT will return 0 for both range and >>> precision. Support for a high precision floating-point format is >>> mandatory for vertex shaders." >>> * >>> From: >>> >>> http://www.khronos.org/opengles/sdk/docs/man/xhtml/glGetShaderPrecisionFormat.xml >>> >>> On Wednesday, January 30, 2013 8:22:30 PM UTC, bob wrote: >>>> >>>> I tried to call the function glGetShaderPrecisionFormat like so: >>>> >>>> *int range[] = new int[2];* >>>> *int precision[] = new int[1];* >>>> * * >>>> *GLES20.glGetShaderPrecisionFormat(GLES20.GL_FRAGMENT_SHADER, >>>> GLES20.GL_HIGH_FLOAT, range, 0, precision, 0);* >>>> >>>> However, it seems to just stick zeros into range and precision. Or it >>>> just never filled them in. >>>> >>>> Anyone know about this? >>>> >>>> Thanks. >>>> >>>> -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
