IDE Bug

[Unseen Machine]

Hi all,

So i got two problems....

This Corona Virus lockdown has me sat at home with  little to do so i figured i would make a few _GL demos for you guys but i've just downloaded the latest IDE and it's telling me ive got syntax errors!!!

I've included the files needed for this, just unzip to your QB64 folder.

Code: QB64: [Select]

1. REM $include:'GDK_GL\GDK_GL.bi'
2.  
3. DIM SHARED Init AS _BYTE
4. Init = False
5.  
6. DIM SHARED Model AS MODEL
7. SCREEN _NEWIMAGE(800, 600, 32)
8. _DISPLAYORDER _GLRENDER
9.  
10. REM $include:'GDK_GL\GDK_GL.bm'
11.  
12. SUB _GL
13.  
14.     GDK_GL_CLS
15.  
16.     IF Init = False THEN
17.         'gdk_gl_model_load model, "GDK_Gl\demon.mdl"
18.         Init = True
19.     ELSE
20.  
21.     END IF
22.     _DISPLAY
23. END SUB
24.  

Remove the ' from the GDK_GL_MODEL_LOAD commmand and youll see that suddenly the

Code: QB64: [Select]

1. IF Init= False THEN

suddenly has a syntax error!

Anyone got any idea why?

and secondly...

ive been trying to sort out a question ive been asked on mic input but when trying to compile my program i get a compilation error. Apparently audio.hpp is missing even though i know it's where it's supposed to be, i created a fresh install of QB64, reinstalled the libs and still got the same error...any insight would be great

thanks foks

Unseen

[Unseen Machine]

Problem one i solved myself, seems i was calling the model load as a sub when it's actually a function! But still, i dont see why when i was doing it wrong it said i had a syntax error on the wrong line....

[bplus]

If QB64 can't find a file sitting right there in your folder like an .ico, try ./ prefix.

[gaslouk]

I

[Unseen Machine]

*** FIXED ****
Sooooo...I'v got another problem...

This code is about as simple as GL gets and should work without issue, i get to see the triangle but for some reason it looks lie my screen tries resizing and then the program crashes...please test it and if you get similar results or not please let me know...

Thanks

Unseen

Code: QB64: [Select]

1. SCREEN _NEWIMAGE(400, 300)
2. _DISPLAY
3. _DISPLAYORDER _GLRENDER
4.  
5. _FPS 30 '    // Set maximium frames per second
6.  
7. DIM SHARED CamX!, CamY!, CamZ!, CamXRot%, CamYRot%, CamZRot%
8.  
9. '// Initial camera settings
10. CamZ! = -10
11.  
12. DO
13.     _LIMIT 30
14.  
15.     _DISPLAY
16. LOOP
17.  
18.  
19.  
20. SUB _GL
21.  
22.     _glClearColor 0, 0, 0, 1 '// Set background (clear) color to black
23.     _glClearDepth 1 '                 // Set clear depth value to farthest
24.     _glEnable _GL_DEPTH_TEST '         // Enables depth buffer for hidden surface removal
25.  
26.     '// Setup a perspective view
27.     _glMatrixMode _GL_PROJECTION
28.     _glLoadIdentity
29.     _gluPerspective 60, 400 / 300, .1, 400
30.     _glMatrixMode _GL_MODELVIEW
31.     _glLoadIdentity
32.  
33.     _glClear _GL_COLOR_BUFFER_BIT OR _GL_DEPTH_BUFFER_BIT '// Clear screen and depth buffers
34.     _glLoadIdentity
35.  
36.     '// Set the view to the cameras position
37.     _glRotatef CamXRot%, 1, 0, 0
38.     _glRotatef CamYRot%, 0, 1, 0
39.     _glRotatef CamZRot%, 0, 0, 1
40.     _glTranslatef CamX!, CamY!, CamZ!
41.  
42.     '// Draw the triangle
43.     _glBegin _GL_TRIANGLES
44.     _glColor3f 1, 0, 0
45.     _glVertex3f -1, -1, 0
46.     _glColor3f 0, 1, 0
47.     _glVertex3f 0, 1, 0
48.     _glColor3f 0, 0, 1
49.     _glVertex3f 1, -1, 0
50.     _glEnd
51.  
52. END SUB
53.  
54.  

[TempodiBasic]

Hi UnseenMachine
fine to see you

as feedback
with first code corrected I got a black screen window

Code: QB64: [Select]

1. REM $INCLUDE:'GDK_GL\GDK_GL.bi'
2.  
3. DIM SHARED Init AS _BYTE
4. Init = False
5.  
6. DIM SHARED Model AS MODEL
7. SCREEN _NEWIMAGE(800, 600, 32)
8. _DISPLAYORDER _GLRENDER
9.  
10. REM $INCLUDE:'GDK_GL\GDK_GL.bm'
11.  
12. SUB _GL
13.  
14.     GDK_GL_CLS
15.  
16.     IF Init = False THEN
17.         a = GDK_GL_MODEL_LOAD(Model, "GDK_Gl\demon.mdl")
18.         IF a = -1 THEN Init = True ELSE PRINT "ERROR"
19.     ELSE
20.  
21.     END IF
22.     _DISPLAY
23. END SUB
24.  
25.  

while with the 2nd code I get  the same black screen window in which appears a coloured triangle just for a second and then it disappears. But if I move the window it appears another time just for a second.

I see that you use both _LIMIT 30 and before this _FPS 30
but about this last I have found no documentation... it seems a _QB64function as a SUB with one integer parameter.
Wiki onlike lacks of documentation about it, but parser shows it with the color of variables... and no warning or error about it!

I hope these feedbacks can be useful.
I'm using QB64x64  version 1.4  gitub 0f49b2c on windows10 64 bit.

[bplus]

*** FIXED ****
Sooooo...I'v got another problem...

This code is about as simple as GL gets and should work without issue, i get to see the triangle but for some reason it looks lie my screen tries resizing and then the program crashes...please test it and if you get similar results or not please let me know...

Thanks

Unseen

Code: QB64: [Select]

1. SCREEN _NEWIMAGE(400, 300)
2. _DISPLAY
3. _DISPLAYORDER _GLRENDER
4.  
5. _FPS 30 '    // Set maximium frames per second
6.  
7. DIM SHARED CamX!, CamY!, CamZ!, CamXRot%, CamYRot%, CamZRot%
8.  
9. '// Initial camera settings
10. CamZ! = -10
11.  
12. DO
13.     _LIMIT 30
14.  
15.     _DISPLAY
16. LOOP
17.  
18.  
19.  
20. SUB _GL
21.  
22.     _glClearColor 0, 0, 0, 1 '// Set background (clear) color to black
23.     _glClearDepth 1 '                 // Set clear depth value to farthest
24.     _glEnable _GL_DEPTH_TEST '         // Enables depth buffer for hidden surface removal
25.  
26.     '// Setup a perspective view
27.     _glMatrixMode _GL_PROJECTION
28.     _glLoadIdentity
29.     _gluPerspective 60, 400 / 300, .1, 400
30.     _glMatrixMode _GL_MODELVIEW
31.     _glLoadIdentity
32.  
33.     _glClear _GL_COLOR_BUFFER_BIT OR _GL_DEPTH_BUFFER_BIT '// Clear screen and depth buffers
34.     _glLoadIdentity
35.  
36.     '// Set the view to the cameras position
37.     _glRotatef CamXRot%, 1, 0, 0
38.     _glRotatef CamYRot%, 0, 1, 0
39.     _glRotatef CamZRot%, 0, 0, 1
40.     _glTranslatef CamX!, CamY!, CamZ!
41.  
42.     '// Draw the triangle
43.     _glBegin _GL_TRIANGLES
44.     _glColor3f 1, 0, 0
45.     _glVertex3f -1, -1, 0
46.     _glColor3f 0, 1, 0
47.     _glVertex3f 0, 1, 0
48.     _glColor3f 0, 0, 1
49.     _glVertex3f 1, -1, 0
50.     _glEnd
51.  
52. END SUB
53.  
54.  

Code: QB64: [Select]

1. SCREEN _NEWIMAGE(400, 300, 32) '<<<<<<<<<<<<<<<<<< your code needs the 32
2.  

[SMcNeill]

Code: QB64: [Select]

1. SCREEN _NEWIMAGE(400, 300, 32) '<<<<<<<<<<<<<<<<<< need the 32
2.  

Unless your intention is to make a screen 0 text screen 400x300 characters in size?  6400x2400 pixels or so?

[bplus]

Hi Steve, In case my fix is too terse, I added context.

[TempodiBasic]

Yes Bplus
now the second example posted by UnseenMachine works...
You've nailed it!

[Qwerkey]

@Unseen Machine It is good to see you back.  We are currently curating good Programs into the Samples section.  When you have completed this batch of Open_GL demos, please create a post in Programs and we may place these into Samples Gallery / SUB_GL.

[Cobalt]

Unless your intention is to make a screen 0 text screen 400x300 characters in size?  6400x2400 pixels or so?

Base screen 0 text is 8x16 right?  so  3200x4800 pixels or there abouts. which is odd cause people are making graphics screens that are darn close to that but don't crash so why can we not have a text screen that big without crashing? I don't think the text screens can even come that close to that size.

[Unseen Machine]

Hi all,

Yeah i clocked that mistake, seems it took me a few days to rember the intricities of QB64 and to some extent my own libraries!

@Unseen Machine It is good to see you back.  We are currently curating good Programs into the Samples section.  When you have completed this batch of Open_GL demos, please create a post in Programs and we may place these into Samples Gallery / SUB_GL.

Will do and do you have any specific demo's youd like? Right now i'm working on re-writing my Quake Chess game (i've lost the original code)

Thanks and happy coding...

Unseen

[TerryRitchie]

Good to see you again John. It's been a while.

[Unseen Machine]

So, back to my bug where QB64 can't find libraries whne compiling my code.

I broke it down to as basic as i could and ive figured it out. When using a c lib that #include's another c library the compiler cant find that second included file. To demonstrate...

Unzip the included folder (only contains two text files i made for this test) and run the following code...

Code: QB64: [Select]

1. PRINT Test
2.  
3.  
4. DECLARE LIBRARY "Tests\Test_Include", "Tests\Test"
5.   FUNCTION Test%
6. END DECLARE
7.  

You should see it report a failiure to compile and when you look at the compilelog it reports that it cant find Test.hpp.

Removing the Binding to Test_Include.h and it will compile!

Code: QB64: [Select]

1. PRINT Test
2.  
3. DECLARE LIBRARY "Tests\Test"
4.   FUNCTION Test%
5. END DECLARE
6.  

This means that all my wrappers/c++ libraries that use external libraries are no longer compatible with QB64 for the time being till this gets fixed...

Unseen