Comments (8)
GlenKelley
commented on July 17, 2024
I was able to fix the error by replacing the cgo directives to use the MacOS equivalent import statements
replacing
// #include <GL/gl.h>
import "C"
with
// #cgo LDFLAGS: -framework Cocoa
// #cgo LDFLAGS: -framework OpenGL
// #cgo LDFLAGS: -framework IOKit
// #import <OpenGL/gl3.h>
import "C"
This reflects the differences in building OpenGL on MacOS compared to Linux/Windows.
I'm not happy with this solution yet, as it is messy and very specific to my version of MacOS.
I see that you include #cgo directives in glfw/glfw3/glu, I'll try to find a minimal change which is idiomatic with the structure of your projects.
Also, FYI, it appears as though glfw3 uses Cocoa and IOKit on MacOS 10.8
http://stackoverflow.com/questions/18391487/compiling-with-glfw3-linker-errors-undefined-reference
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pwaller
commented on July 17, 2024
Hi, thanks for taking the time to report this.
The trick may be to have the OSX definitions in a file separate to the linux ones and use conditional build flags.
http://golang.org/pkg/go/build/
i.e, a gl_darwin.go file and a // +build !darwin directive in the gl.go. If you could find something which works for you and submit reports or pull requests to the specific projects, that would be great :)
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pwaller
commented on July 17, 2024
Looks like someone has already made a fix:
Can you try master, does it work for you?
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lord
commented on July 17, 2024
OS X 10.9.3 here, running go test in examples/gl results in this bizzare vertex shader syntax error. I checked out gl_test.go, but couldn't find the problem.
I'm a bit of a newbie when it comes to OpenGL, but I'd be glad to help out in any way I can.
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3zcurdia
commented on July 17, 2024
Hi I don't know if is related but when I try to run the triangle example I got this error on OS X 10.9.3
2014/07/11 14:51:10 Program validation failed: 0
panic: Program validation failed: 0
goroutine 1 [running]:
runtime.panic(0x4130100, 0xc21000a670)
/usr/local/Cellar/go/1.2.1/libexec/src/pkg/runtime/panic.c:266 +0xb6
log.Panic(0x4751dd8, 0x2, 0x2)
/usr/local/Cellar/go/1.2.1/libexec/src/pkg/log/log.go:307 +0xac
github.com/go-gl/glh.NewProgram(0x4751f10, 0x2, 0x2, 0x59)
/Users/3zcurdia/code/go/src/github.com/go-gl/glh/shader.go:40 +0x394
main.main()
/Users/3zcurdia/code/go/src/github.com/go-gl/examples/glfw3/triangle/triangle.go:79 +0x334
goroutine 3 [syscall]:
runtime.goexit()
/usr/local/Cellar/go/1.2.1/libexec/src/pkg/runtime/proc.c:1394
I the other hand the modern example runs without any trouble.
Any Help?
from example.
SamMorrowDrums
commented on July 17, 2024
Hi, I'm on OSX Yosemite with homebrew install of glfw2, glfw3, glew, 'sdl' & SDL_image, which were all the dependencies. One of the tests is also failing (same as @lord I think). Below is the output:
go test
2015/01/31 13:14:45 === gltext/truetype
================================================================================
github.com/go-gl/examples/gltext/truetype
--------------------------------------------------------------------------------
2015/01/31 13:14:46 === mathgl/opengl-tutorial/objloader
================================================================================
github.com/go-gl/mathgl (download)
github.com/go-gl/mathgl/mgl32
github.com/go-gl/examples/mathgl/opengl-tutorial/objloader
--------------------------------------------------------------------------------
2015/01/31 13:14:51 === glfw3/modern
================================================================================
github.com/go-gl/examples/glfw3/modern
--------------------------------------------------------------------------------
2015/01/31 13:14:52 === nehe/06
================================================================================
github.com/go-gl/examples/nehe/06
--------------------------------------------------------------------------------
2015/01/31 13:14:54 === nehe/08
================================================================================
github.com/go-gl/examples/nehe/08
--------------------------------------------------------------------------------
2015/01/31 13:14:56 === nehe/03
================================================================================
github.com/go-gl/examples/nehe/03
--------------------------------------------------------------------------------
2015/01/31 13:15:02 === gl
================================================================================
-- subtest: gl
=== RUN TestTexImage1D
--- PASS: TestTexImage1D (0.63s)
=== RUN TestTexImage2D
--- PASS: TestTexImage2D (0.01s)
=== RUN TestTexImage3D
--- PASS: TestTexImage3D (0.02s)
=== RUN TestTexSubImage1D
--- PASS: TestTexSubImage1D (0.01s)
=== RUN TestTexSubImage2D
--- PASS: TestTexSubImage2D (0.02s)
=== RUN TestTexSubImage3D
--- PASS: TestTexSubImage3D (0.01s)
=== RUN TestBufferData
--- PASS: TestBufferData (0.03s)
=== RUN TestBufferSubData
--- PASS: TestBufferSubData (0.01s)
=== RUN TestGetBufferSubData
--- PASS: TestGetBufferSubData (0.02s)
=== RUN TestAttribPointer
panic: vertex shader error: ERROR: 0:2: 'foo' : syntax error: Array size must appear after variable name
goroutine 6 [running, locked to thread]:
github.com/go-gl/examples/gl.newProgram(0xc2080345c0)
/Users/Sam/src/github.com/go-gl/examples/gl/gl_test.go:273 +0x1be
github.com/go-gl/examples/gl.func·019()
/Users/Sam/src/github.com/go-gl/examples/gl/gl_test.go:300 +0x30
github.com/go-gl/testutils.func·001()
/Users/Sam/src/github.com/go-gl/testutils/gltest.go:53 +0x477
created by github.com/go-gl/testutils.StartOpenGL
/Users/Sam/src/github.com/go-gl/testutils/gltest.go:58 +0x25
goroutine 1 [chan receive, locked to thread]:
testing.RunTests(0x41c1cd8, 0x424b6a0, 0x14, 0x14, 0x4260501)
/usr/local/Cellar/go/1.4.1/libexec/src/testing/testing.go:556 +0xad6
testing.(*M).Run(0xc2080400f0, 0x424c3c0)
/usr/local/Cellar/go/1.4.1/libexec/src/testing/testing.go:485 +0x6c
main.main()
github.com/go-gl/examples/gl/_test/_testmain.go:90 +0x1d5
goroutine 15 [chan send]:
github.com/go-gl/testutils.OnTheMainThread(0xc20802a8a0, 0x41c1c48)
/Users/Sam/src/github.com/go-gl/testutils/gltest.go:27 +0x96
github.com/go-gl/examples/gl.TestAttribPointer(0xc20805e510)
/Users/Sam/src/github.com/go-gl/examples/gl/gl_test.go:315 +0x99
testing.tRunner(0xc20805e510, 0x424b778)
/usr/local/Cellar/go/1.4.1/libexec/src/testing/testing.go:447 +0xbf
created by testing.RunTests
/usr/local/Cellar/go/1.4.1/libexec/src/testing/testing.go:555 +0xa8b
goroutine 17 [syscall, locked to thread]:
runtime.goexit()
/usr/local/Cellar/go/1.4.1/libexec/src/runtime/asm_amd64.s:2232 +0x1
exit status 2
FAIL github.com/go-gl/examples/gl 0.800s
--- FAIL: TestExamples (18.64s)
examples_test.go:95: Process mathgl/opengl-tutorial/objloader died unexpectedly after 1.189658ms: "fork/exec bin/mathgl/opengl-tutorial/objloader: permission denied"
examples_test.go:39: Failed to run 'go test': exit status 1
FAIL
exit status 1
FAIL github.com/go-gl/examples 18.695s
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andcode365
commented on July 17, 2024
Hi. I encountered the same problem as @3zcurdia's (see #28 (comment)) on OSX 10.10.2.
I moved some lines in examples/glfw3/triangle/triangle.go to avoid the problem like this.
// create & bind vertex array here
// OpenGL requires us to have a vertex array object bound
vertexArray := gl.GenVertexArray()
vertexArray.Bind()
vShader := glh.Shader{gl.VERTEX_SHADER, loadDataFile("triangle.v.glsl")}
fShader := glh.Shader{gl.FRAGMENT_SHADER, loadDataFile("triangle.f.glsl")}
program := glh.NewProgram(vShader, fShader)
program.Use()I think glh.NewProgram() has 2 issues.
- It doesn't print program.GetInfoLog() message when gl.VALIDATE_STATUS is false.
- Is it appropriate to validate gl.Program here?
thanks.
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dmitshur
commented on July 17, 2024
I don't think this repository is well maintained. It has mostly one-off contributions, but little active updating from authors to keep it up with the latest changes.
Personally, I don't use glh in any of my projects, so I can't know if it's no longer working.
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Related Issues (20)
- how to convert glm to mgl32? HOT 1
- Build errors on Mac OS 10.11 HOT 9
- Improve unfriendly requirement that examples must be run in their package directory. HOT 2
- Go 1.6 -msan option error (memory sanitizer) HOT 6
- build error on OSX, go1.6 HOT 2
- [Question] Unable to run examples, only background windows showing in GL window HOT 4
- multiple contexts HOT 6
- Proposal: Rename repository to "example". HOT 6
- Specify permissive license. HOT 5
- Examples are broken HOT 1
- More information in examples HOT 2
- gl21-cube: Cube in demo appears squashed. HOT 6
- Odd choppiness to animation? HOT 8
- frame rate drops proportionally to number of process instances HOT 5
- Handle leak on Windows at SetSize? HOT 4
- fatal error: checkptr: unsafe pointer arithmetic on Go 1.14rc1 HOT 1
- Re: github.com/go-gl/example/gl41core-cube/cube.go HOT 1
- Can I render a webpage at the window HOT 1
- c:\go\pkg\tool\windows_amd64\link.exe: running gcc failed: exit status 1 HOT 1
- gl.GenTextures
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