EGL bug. Opengl ES version Mismatch
Closed this issue · 5 comments
darmie commented
I am trying to Port Nanovgo example to Android using andrioid-go and EGL
I modified Nanovgo to support GLES2 library from https://github.com/xlab/android-go/tree/master/gles2 , see modified version here nanovgo-gles
func init() {
app.SetLogTag("GolangExample")
// Initialise gl bindings using the current context.
// err := gl.Init()
// if err != nil {
// log.Fatalln("gl.Init:", err)
// }
}
func main() {
log.Println("NativeActivity has started ^_^")
log.Printf("Platform: %s %s", runtime.GOOS, runtime.GOARCH)
nativeWindowEvents := make(chan app.NativeWindowEvent)
var displayHandle *egl.DisplayHandle
ctx, err := nanovgo.NewContext(0)
if err != nil {
panic(err)
}
//demoData = LoadDemo(ctx)
app.Main(func(a app.NativeActivity) {
a.HandleNativeWindowEvents(nativeWindowEvents)
a.InitDone()
for {
select {
case event := <-a.LifecycleEvents():
switch event.Kind {
case app.OnCreate:
log.Println(event.Kind, "handled")
default:
log.Println(event.Kind, "event ignored")
}
case event := <-nativeWindowEvents:
switch event.Kind {
case app.NativeWindowRedrawNeeded:
a.NativeWindowRedrawDone()
draw(displayHandle, ctx)
log.Println(event.Kind, "handled")
case app.NativeWindowCreated:
expectedSurface := map[int32]int32{
egl.SurfaceType: egl.WindowBit,
egl.RedSize: 8,
egl.GreenSize: 8,
egl.BlueSize: 8,
}
if handle, err := egl.NewDisplayHandle(event.Window, expectedSurface); err != nil {
log.Fatalln("EGL error:", err)
} else {
displayHandle = handle
log.Printf("EGL display res: %dx%d", handle.Width, handle.Height)
}
initGL()
case app.NativeWindowDestroyed:
displayHandle.Destroy()
default:
log.Println(event.Kind, "event ignored")
//demoData.FreeData(ctx)
}
}
}
})
}
func initGL() {
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.CULL_FACE)
gl.Disable(gl.DEPTH_TEST)
}
func draw(handle *egl.DisplayHandle, ctx *nanovgo.Context) {
fmt.Println("draw")
//fps := perfgraph.NewPerfGraph("Frame Time", "sans")
//t, _ := fps.UpdateGraph()
pixelRatio := float32(handle.Width) / float32(handle.Height)
gl.Viewport(0, 0, int32(handle.Width), int32(handle.Height))
fmt.Println("view port")
gl.ClearColor(0, 0, 0, 0)
fmt.Println("clear color")
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
ctx.BeginFrame(int32(handle.Width), int32(handle.Height), pixelRatio)
fmt.Println("begin frame")
demo.RenderDemo(ctx, 0, 0, 300, 600, 0, false, &demo.DemoData{})
//fps.RenderGraph(ctx, 5, 5)
ctx.EndFrame()
//gl.Enable(gl.DEPTH_TEST)
//glfw.PollEvents()
handle.SwapBuffers()
}demo.go :
func RenderDemo(ctx *nanovgo.Context, mx, my, width, height, t float32, blowup bool, data *DemoData) {
// Widgets
drawWindow(ctx, "Widgets `n Stuff", 50, 50, 300, 400)
var x float32 = 60.0
var y float32 = 95.0
fmt.Println("Draw Window")
drawSearchBox(ctx, "Search", x, y, 280, 25)
y += 40
fmt.Println("Draw Search")
drawDropDown(ctx, "Effects", x, y, 280, 28)
//popy := y + 14
y += 45
fmt.Println("Draw DropDown")
// Form
drawLabel(ctx, "Login", x, y, 280, 20)
y += 25
fmt.Println("Draw Label")
drawEditBox(ctx, "Email", x, y, 280, 28)
y += 35
fmt.Println("Draw Edit Box")
drawEditBox(ctx, "Password", x, y, 280, 28)
y += 38
fmt.Println("Draw Password")
drawCheckBox(ctx, "Remember me", x, y, 140, 28)
fmt.Println("Draw Checkbox")
drawButton(ctx, IconLOGIN, "Sign in", x+138, y, 140, 28, nanovgo.RGBA(0, 96, 128, 255))
y += 45
fmt.Println("Draw Button")
// Slider
drawLabel(ctx, "Diameter", x, y, 280, 20)
y += 25
drawEditBoxNum(ctx, "123.00", "px", x+180, y, 100, 28)
drawSlider(ctx, 0.4, x, y, 170, 28)
y += 55
drawButton(ctx, IconTRASH, "Delete", x, y, 160, 28, nanovgo.RGBA(128, 16, 8, 255))
drawButton(ctx, 0, "Cancel", x+170, y, 110, 28, nanovgo.RGBA(0, 0, 0, 0))
fmt.Println("finished rendering")
// Thumbnails box
//drawThumbnails(ctx, 365, popy-30, 160, 300, data.Images, t)
}BUG:
i am getting a blank screen with these errors
06-08 11:37:00.885 23648-23666/? I/GolangExample: NativeActivity has started ^_^
06-08 11:37:00.885 23648-23666/? I/GolangExample: Platform: android arm
06-08 11:37:00.887 23648-23666/? I/GolangExample: Shader shader/vert error:
06-08 11:37:00.888 23648-23667/? I/GolangExample: onCreate handled
06-08 11:37:00.890 23648-23666/? I/GolangExample: onStart event ignored
06-08 11:37:00.893 23648-23666/? I/GolangExample: onResume event ignored
06-08 11:37:00.894 23648-23648/? D/ActivityThread: EYE startEyeVerifyBroadcast packagename=com.go_android.minimal; ClassName=android.app.NativeActivity
06-08 11:37:00.903 23648-23648/? V/PhoneWindow: DecorView setVisiblity: visibility = 4, Parent = null, this = DecorView@2359018[],statusBarBackground visible =false,statusColor: 0xff000000->
06-08 11:37:00.919 23648-23648/? D/WindowClient: Add to mViews: DecorView@2359018[NativeActivity], this = android.view.WindowManagerGlobal@4cddbcf
06-08 11:37:00.934 23648-23648/? V/PhoneWindow: DecorView setVisiblity: visibility = 0, Parent = ViewRoot{5b9d95c com.go_android.minimal/android.app.NativeActivity,ident = 0}, this = DecorView@2359018[NativeActivity],statusBarBackground visible =false,statusColor: 0xff000000->
06-08 11:37:00.968 23648-23648/? I/lulingjie--screenshot--observer--: observer is rigistedDecorView@2359018[NativeActivity]
06-08 11:37:00.994 23648-23648/? V/InputMethodManager: onWindowFocus: null softInputMode=272 first=true flags=#10100
06-08 11:37:01.027 23648-23666/? D/Surface: Surface::setBuffersUserDimensions(this=0xe663a000,w=0,h=0)
06-08 11:37:01.040 23648-23666/? D/Surface: Surface::connect(this=0xe663a000,api=1)
06-08 11:37:01.042 23648-23666/? W/libEGL: [ANDROID_RECORDABLE] format: 2
06-08 11:37:01.047 23648-23666/? D/mali_winsys: EGLint new_window_surface(egl_winsys_display*, void*, EGLSurface, EGLConfig, egl_winsys_surface**, egl_color_buffer_format*, EGLBoolean) returns 0x3000
06-08 11:37:01.051 23648-23666/? I/GolangExample: EGL display res: 640x1070
06-08 11:37:01.052 23648-23664/? I/GolangExample: draw
06-08 11:37:01.052 23648-23664/? I/GolangExample: view port
06-08 11:37:01.052 23648-23664/? I/GolangExample: clear color
06-08 11:37:01.066 23648-23666/? D/GraphicBuffer: register, handle(0xe91913c0) (w:640 h:1070 s:640 f:0x2 u:0x000b00)
06-08 11:37:01.068 23648-23664/? I/GolangExample: begin frame
06-08 11:37:01.068 23648-23664/? I/GolangExample: Draw Window
06-08 11:37:01.068 23648-23664/? I/GolangExample: Draw Search
06-08 11:37:01.069 23648-23664/? I/GolangExample: Draw DropDown
06-08 11:37:01.069 23648-23664/? I/GolangExample: Draw Label
06-08 11:37:01.069 23648-23664/? I/GolangExample: Draw Edit Box
06-08 11:37:01.069 23648-23664/? I/GolangExample: Draw Password
06-08 11:37:01.069 23648-23664/? I/GolangExample: Draw Checkbox
06-08 11:37:01.070 23648-23664/? I/GolangExample: Draw Button
06-08 11:37:01.070 23648-23666/? D/MALI: gles_state_set_error_internal:75: [MALI] GLES ctx: 0xa6680008, error code:0x502
06-08 11:37:01.070 23648-23666/? D/MALI: gles_state_set_error_internal:76: [MALI] GLES error info: OpenGL ES API version mismatch
xlab commented
@darmie thanks for mentioning me by X-Lab, this spelling brings some nostalgia, I used it ~12 years ago :)
As for your problem, I think you copied EGL/GLES context initialization of GLES 1.0..
See https://github.com/golang-ui/nuklear/blob/master/nk/impl_android_gles2.go#L107 for GLES 2 and
https://github.com/golang-ui/nuklear/blob/master/nk/impl_android_gles3.go#L36 for examples on how to init GLES 2/ GLES 3 surfaces.
E.g.
display, err := egl.NewDisplayHandle(win, map[int32]int32{
egl.SurfaceType: egl.WindowBit,
egl.ContextClientVersion: 2.0, // OpenGL ES 2.0
egl.RedSize: 8,
egl.GreenSize: 8,
egl.BlueSize: 8,
egl.AlphaSize: 8,
egl.DepthSize: 24,
})
if err != nil {
log.Println("Platform init failed:", err)
return nil
}
if (int)(C.init_ext()) != 0 {
log.Println("GL ES 2.0 extensions load failed:", err)
return nil
}darmie commented
Thank you. I just did that and it was resolved. But I am getting new errors:
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:75: [MALI] GLES ctx: 0xa6780008, error code:0x502
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:76: [MALI] GLES error info: the reserved buffer object 0 is bound to <target>
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:75: [MALI] GLES ctx: 0xa6780008, error code:0x502
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:76: [MALI] GLES error info: there is no current program object
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:75: [MALI] GLES ctx: 0xa6780008, error code:0x502
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:76: [MALI] GLES error info: there is no current program object
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:75: [MALI] GLES ctx: 0xa6780008, error code:0x502
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:76: [MALI] GLES error info: there is no current program object
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:75: [MALI] GLES ctx: 0xa6780008, error code:0x502
06-08 14:14:34.779 23381-23401/com.go_android.minimal D/MALI: gles_state_set_error_internal:76: [MALI] GLES error info: there is no current program object
xlab commented
@darmie NanoVG is originally for OpenGL, I guess there is an incompatible call in the GL code, you need to search the error in google and understand why it fails for GLESv3.
darmie commented
darmie commented
@xlab So I realized that the problem is from the shader. The shader is not compiling
This is my shader:
# version 300
uniform vec2 viewSize;
in vec2 vertex;
in vec2 tcoord;
out vec2 ftcoord;
out vec2 fpos;
void main(void) {
ftcoord = tcoord;
fpos = vertex;
gl_Position = vec4(2.0*vertex.x/viewSize.x - 1.0, 1.0 - 2.0*vertex.y/viewSize.y, 0, 1);
}func (s *glShader) createShader(name, header, opts, vShader, fShader string) error {
program := gl.CreateProgram()
vertexShader := gl.CreateShader(gl.VERTEX_SHADER)
mShader := strings.Join([]string{opts, vShader}, "\x00")
fmt.Println(mShader)
gl.ShaderSource(vertexShader, 1, []string{mShader + "\x00"}, nil)
gl.CompileShader(vertexShader)
var status int32
gl.GetShaderiv(vertexShader, gl.COMPILE_STATUS, &status)
if status != gl.TRUE {
fmt.Println("vertex shader status", status)
return dumpShaderError(vertexShader, name, "vert")
}
}Error Log:
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: # version 300 es
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: uniform vec2 viewSize;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: in vec2 vertex;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: in vec2 tcoord;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: out vec2 ftcoord;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: out vec2 fpos;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: void main(void) {
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: ftcoord = tcoord;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: fpos = vertex;
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: gl_Position = vec4(2.0*vertex.x/viewSize.x - 1.0, 1.0 - 2.0*vertex.y/viewSize.y, 0, 1);
06-08 20:03:03.624 10771-10789/com.go_android.minimal I/GolangExample: }
06-08 20:03:03.625 10771-10791/com.go_android.minimal I/GolangExample: Shader shader/vert error:
06-08 20:03:03.626 10771-10789/com.go_android.minimal I/GolangExample: vertex shader status 0
vertex shader status is supposed to be equals to 1 if the shader compiled properly
06-08 21:10:52.641 6524-6559/com.go_android.minimal I/Adreno: ERROR: 0:5: ':' : Syntax error: syntax error
INTERNAL ERROR: no main() function!
ERROR: 1 compilation errors. No code generated.