x/mobile: DrawElements doesn't show anything

[nzlov]

android 5.0 log

09-23 21:14:51.733: I/GoLog(30969): gl.Disable(CULL_FACE) 
09-23 21:14:51.733: I/GoLog(30969): gl.Clear(gl.Enum(0x4100)) 
09-23 21:14:51.733: I/GoLog(30969): gl.ClearColor(0.1764706, 0.21176471, 0.21960784, 1) 
09-23 21:14:51.733: I/GoLog(30969): gl.DepthMask(false) 
09-23 21:14:51.733: I/GoLog(30969): gl.UseProgram(Program(1)) 
09-23 21:14:51.733: I/GoLog(30969): gl.ActiveTexture(TEXTURE0) 
09-23 21:14:51.733: I/GoLog(30969): gl.BindTexture(TEXTURE_2D, Texture(1)) 
09-23 21:14:51.738: I/GoLog(30969): gl.UniformMatrix4fv(Uniform(1:), len(16)) 
09-23 21:14:51.738: I/GoLog(30969): gl.BindBuffer(ARRAY_BUFFER, Buffer(2)) 
09-23 21:14:51.738: I/GoLog(30969): gl.BufferSubData(ARRAY_BUFFER, 0, len(80000)) 
09-23 21:14:51.738: I/GoLog(30969): gl.EnableVertexAttribArray(Attrib(0:)) 
09-23 21:14:51.738: I/GoLog(30969): gl.EnableVertexAttribArray(Attrib(2:)) 
09-23 21:14:51.738: I/GoLog(30969): gl.EnableVertexAttribArray(Attrib(1:)) 
09-23 21:14:51.738: I/GoLog(30969): gl.VertexAttribPointer(Attrib(0:), 2, FLOAT, false, 20, 0) 
09-23 21:14:51.738: I/GoLog(30969): gl.VertexAttribPointer(Attrib(2:), 2, FLOAT, false, 20, 8) 
09-23 21:14:51.743: I/GoLog(30969): gl.VertexAttribPointer(Attrib(1:), 4, UNSIGNED_BYTE, true, 20, 16) 
09-23 21:14:51.743: I/GoLog(30969): gl.BindBuffer(ELEMENT_ARRAY_BUFFER, Buffer(1)) 
09-23 21:14:51.743: I/GoLog(30969): gl.DrawElements(TRIANGLES, 160, UNSIGNED_SHORT, 0) 
09-23 21:14:51.743: I/GoLog(30969): gl.DisableVertexAttribArray(Attrib(0:)) 
09-23 21:14:51.743: I/GoLog(30969): gl.DisableVertexAttribArray(Attrib(2:)) 
09-23 21:14:51.743: I/GoLog(30969): gl.DisableVertexAttribArray(Attrib(1:)) 
09-23 21:14:51.743: I/GoLog(30969): gl.BindBuffer(ARRAY_BUFFER, Buffer(0)) 
09-23 21:14:51.743: I/GoLog(30969): gl.BindTexture(TEXTURE_2D, Texture(0)) 
09-23 21:14:51.743: I/GoLog(30969): gl.DepthMask(true) 
09-23 21:14:51.743: I/GoLog(30969): gl.UseProgram(Program(0)) 
09-23 21:14:51.748: I/GoLog(30969): gl.Flush() 

you can run https://github.com/mandroa/examples test example .

[crawshaw]

This is most likely a bug in your GLSL shader, or in some way the GL state machine has been configured. Does this run on the desktop? I notice your app makes use of GLFW, which means you're probably not running in ES 2 on the desktop. OpenGL shaders are not automatically compatible between the desktop and ES 2.

[nzlov]

thx.But use the same code, the early x/mobile no problem.

[crawshaw]

I'm sorry, there's not enough information here for me to help you debug. Your example program is too big for me to work through, and there are too many ways this could be incompatible with the GL spec or tickling a bug in a specific GL driver.

[nzlov]

thank you very much.