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x/mobile: DrawElements doesn't show anything #12727

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nzlov opened this issue Sep 23, 2015 · 4 comments
Closed

x/mobile: DrawElements doesn't show anything #12727

nzlov opened this issue Sep 23, 2015 · 4 comments
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@nzlov
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nzlov commented Sep 23, 2015

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 .
@bradfitz bradfitz changed the title DrawElements doesn't show anything x/mobile: DrawElements doesn't show anything Sep 23, 2015
@ianlancetaylor ianlancetaylor added this to the Unreleased milestone Sep 23, 2015
@crawshaw
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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
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nzlov commented Sep 29, 2015

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

@crawshaw
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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.

@crawshaw crawshaw removed their assignment Sep 29, 2015
@nzlov
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nzlov commented Sep 29, 2015

thank you very much.

@nzlov nzlov closed this as completed Sep 29, 2015
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