strangebug
commented
7 years ago Hello,
The name of the package might be misleading, 'golang.org/x/mobile/gl' is built upon OpenGL ES 2.0 (w/ optional support for OpenGL 3.0) not the "desktop" OpenGL. OpenGL ES 2.0 dropped the support for the fixed pipeline so porting your code will a bit harder.
My two cents
Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (
go version)?1.7
What operating system and processor architecture are you using (
go env)?mac os
What did you do?
migrate a program from pc to mobile go get -u github.com/go-gl/glfw/v3.2/glfw --> golang.org/x/mobile/app go get -u github.com/go-gl/gl/v2.1/gl --> golang.org/x/mobile/gl go get -u github.com/timshannon/go-openal/openal --> golang.org/x/mobile/exp/audio/al I wish to do the above change
What did you expect to see?
[golang.org/x/mobile/gl] act just like [github.com/go-gl/gl/v2.1/gl ]
What did you see instead?
There is lot of differences ,
//not implemented gl.TexImage1D gl.Begin(gl.TRIANGLE_STRIP) gl.End() gl.PushMatrix()
gl.PopMatrix() gl.MatrixMode(gl.PROJECTION) gl.TexCoord2f(1, 1) gl.Vertex2f(x2, y2) gl.Color4f(r, g, b, a) gl.LoadIdentity() gl.Ortho(0, float64(sys.scrrect[2]), 0, float64(sys.scrrect[3]), -1, 1) gl.Translated(0, float64(sys.scrrect[3]), 0)
//interface/behaviour change gl.GenTextures(1, &paltex) -->CreateTexture gl.DeleteTextures(1, &paltex) --> DeleteTexture
//unclear gl.Str(src) -->GetString(pname Enum) string ??? gl.DeleteObjectARB(fragObj) --> DeleteShader ???? gl.GetInfoLogARB -->GetProgramInfoLog| GetShaderInfoLog ????