[examples] Review some examples not working properly on several platforms #3487

raysan5 · 2023-10-30T19:10:35Z

Issues on multiple platforms

REVIEW: core_3d_camera_free. Displayed controls do not match and camera behaves strangely.

Issues on `PLATFORM_DESKTOP`, macOS (and maybe other platforms/OSs)

REVIEW: custom_frame_control --> Requires raylib built with SUPPORT_CUSTOM_FRAME_CONTROL.
REVIEW: models_loading. It seems to be buggy at selecting the model, needs some review
REVIEW: skybox_loading. Doesn't fill the entire window, only the bottom-left quadrant --> Probably related to HighDPI.
REVIEW: shader_hot_reloading, shader_spotlight. Scaling issue between the mouse and circle positions --> Probably related to HighDPI.
REVIEW: top_down_lights. Fully illuminated (no shadows are drawn) until light is moved

Issues on `PLATFORM_WEB`

REVIEW: models_skybox. WebGL: INVALID_VALUE: disableVertexAttribArray: index out of range _glDisableVertexAttribArray.
REVIEW: core_custom_frame_control --> Requires raylib built with SUPPORT_CUSTOM_FRAME_CONTROL.
REVIEW: core_loading_thread --> Threading support depends on the browser and security reasons.
REVIEW: core_window_flags --> Most window flags are intended for a window, not a canvas.
REVIEW: raylib_opengl_interop --> Example intended for OpenGL desktop, not OpenGL ES.
REVIEW: rlgl_standalone --> PLATFORM_DESKTOP exclusively
REVIEW: models_mesh_instancing. Not working properly on web, issues with the shader but ONLY when uploade to GitHub, it works as expected locally.

Issues on `PLATFORM_DRM`

Note that some of the issues seem related to platform/OpenGL limitations.

In any case, any help with those examples is really welcome.

The text was updated successfully, but these errors were encountered:

raysan5 · 2023-10-30T19:32:10Z

@ubkp @michaelfiber Just opened this issue for further discussion on the examples not working properly that you reported. Actually some of them are not intended to work on the target platform while others have specific concerns.

@Bigfoot71 not sure if you tested all the examples on PLATFORM_ANDROID and you also found some issues there...

ghost · 2023-10-30T21:10:05Z

Platftorm	Example	Status	Comment
`Desktop`	`core_3d_camera_free`	✔️	Fixes on #3240 and #3488.
`Web`	`models_skybox`	✔️	It's working, but requires `SUPPORT_FILEFORMAT_HDR` to be enabled on `config.h`.
`Web`	`core_loading_thread`	❌	IMHO, I don't think this example should work (at least for now) on `PLATFORM_WEB`. See the warning on L602-L605, which I think is warranted (check this and this). I don't think this feature is mature enough yet. Note: There was a recent PR related to this example: #3449
`Web`	`rlgl_standalone`	❓	I think this should/could work. I've added the necessary lines to the `Makefile.Web` but for some reason it just refuses to link to the `GLES2/gl2.h` inside emscripten's `upstream/emscripten/cache/sysroot/include`. At the moment I'm still unable to make it compile for web.
`Web`	`shaders_mesh_instancing`	❓	I believe the example itself is working. Compiled and uploaded it to Github at https://ubkp.github.io/shaders_mesh_instancing.html and it's working correctly. Testing it on https://www.raylib.com/examples.html I get the errors from the screenshot on Note 1. My best guess is that the problem could be related to the way the example gets built and/or run on raylib.com.
`DRM`	Examples with 3D cameras: `models_first_person_maze` `core_3d_camera_free` `etc`	✔️	Fix on #3492.
`DRM`	Examples with visible cursors: `shapes_draw_circle_sector` `shapes_draw_ring` `etc`	❌	Although the examples are working, I think that the cursor is not showing because it's not implemented for `DRM` (L490-L494). Not sure how to handle it in this case. I'm assuming that in this platform the cursor would be rendered by the user on the Drawing step of the application. References: `core_input_mouse` (L56) and #2952 (reply in thread).

Platftorm	Example	Status	Comment
`DRM`	Examples with type inputs: `text_draw_3d` `text_input_box` `etc`	✔️	Fix on #3498.
`DRM`	`audio_module_playing`	❓	I have no idea why this is crashing the Raspberry Pi. All I could find was that it happens after restarting the music a few times and then trying to exit the example hitting `ESC`.
`DRM`	`core_vr_simulator`	❓	The only thing I could find was `WARNING: FBO: [ID 1] Framebuffer has incomplete attachment`.
`DRM`	`models_skybox`	❌	Got these errors: `IMAGE: Data format not supported` `IMAGE: Failed to load image data`. Looks like the Raspberry Pi 3B doesn't support `HDR`, perhaps the newer ones do.
`DRM`	`shaders_raymarching`	❌	Issue with the fragment shader: `extension GL_OES_standard_derivates unsupported in fragment shader`. Not sure if this example can run on the Raspberry Pi 3B, perhaps the newer ones can.
`DRM`	`rlgl_standalone`	❓	Looks like it's possible that this could be compiled. Just need to add the `-L../examples/others/external/lib` and `-lglfw3`. However, it returns an error `libglfw3.a: file not recognized: file format not recognized.`. Which leads me to believe that `.a` (file) was compiled for `x86` and not `ARM`. IMHO, the easiest (and safest) solution would be the user compiling/providing his own `libglfw3.a` for the Raspberry Pi. Would just be the case of adding that information to the source instructions (L16).

Notes

Screenshot of shaders_mesh_instancing error on raylib.com/examples.html:

Edits

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11. updates.

Bigfoot71 · 2023-10-30T23:54:43Z

@Bigfoot71 not sure if you tested all the examples on PLATFORM_ANDROID and you also found some issues there...

No, from memory, the few issues I had noticed last time have been fixed, and even GetMouseDelta() was implemented as a bonus. I had tried an example in each category on the site, including several from CORE.

I will try all of them tomorrow and provide a brief report. Normally, except for some shader examples, I believe they should all be able to run without any problems.

Edit: I had already mentioned it, but unfortunately, I won't be able to try the example for the gamepad.

ghost · 2023-10-31T00:14:44Z

@Bigfoot71 Maybe #3371 could help?

At that time I went through all examples. The ones with a comment 2 on the tables (e.g.: core_custom_logging, core_drop_files, etc) are probably the ones that could use some testing.

Bigfoot71 · 2023-10-31T00:32:18Z

@ubkp But how do you plan to make core_drop_files work on Android?
Edit: Thanks for the list, it will definitely save me time if some things are already tested

ghost · 2023-10-31T00:39:04Z

@Bigfoot71 I just meant as a reference. Those were just the ones I couldn't get to work completely here. I think most of those marked with 2 are indeed not meant to run on Android.

ghost · 2023-10-31T04:03:51Z

@raysan5 Updated status table at #3487 (comment).

SuperUserNameMan · 2023-10-31T09:39:03Z

maybe SUPPORT_CUSTOM_FRAME_CONTROL could be replaced by a function to enable/disable it at runtime ?

raysan5 · 2023-10-31T09:41:26Z

@ubkp Thank you very much for the detailed table and reviews! Here my comments about some of the examples:

[WEB] core_loading_thread: As commented this example has been reviewed several times along the years and it's highly dependant on the start-of-the-art support for multithreading technology on web, that also kept changing. Not sure about the state at this moment, probably some security concerns are still there but I wouldn't focus more energies on it.
[WEB] rlgl_standalone: I think it should work with some tweak, I can review it.
[WEB] shaders_mesh_instancing: This is a really strange issue because locally it works but on GitHub Pages it doesn't, I vaguely remember dealing with that issue on the past and I thing the solution was somewhat related to system locale and python when compiling the example and I can't rememeber how I solved it. In any case, it probably does not worth to spend more energies on it, considering it's working for any user trying it on their systems.
[DRM] examples requiring visible cursor: I'm afraid the cursor is up to the user on DRM mode, due to the nature and limitations of the platform (no windowing system, no cursor). In the past there was a flag to internally create, update and draw a virtual cursor but it implied additional complexity and maintenance cost so it was finally removed to let the users manage it as desired.

Other possible issues:

[DESKTOP-macOS] examples not filling screen: I'm afraid this is related to RenderTexture usage, HighDPI and how different versions of macOS with retina displays handle window-creation and internal framebuffer. A related issue was reviewed recently: [core] GetRenderWidth()/GetRenderHeight() incorrect return values on retina display (HighDPI) #3367
[DESKTOP-macOS] models_loading: I can't find any significant issue on Windows, more info is required or we can just close it.
[DESKTOP-macOS] top_down_lights: Probably related to some initialization values not provided...

There are probably other example issues but I think most of them work as expected, I plan to do a full examples-test-pass for Windows and Web in the following days, if anything significant popups I will update this issue.

Bigfoot71 · 2023-10-31T23:14:02Z

Android Tests

I have tried almost all the examples in core, shape, textures, text, and models, as well as the 6 audio examples and some of the shader examples that seemed most relevant on Android (with df0f7ba).

Most of the untested examples are those directly related to the keyboard, physical mouse, or gamepad.

All the tested examples were able to compile and run without any issues (except one, see below), including those using raygui.h! So, I will present the problems rather than list what works.

Issues

3D .vox models cannot load on my device but can on others, see:
[models] Crash when loading .vox model on Android with SIGSEGV error #3098
One thing I noticed in many 3D examples (but not all) is a Z-fighting issue, but I'm not sure if it was already present (see video).
I couldn't try the skybox example because my device seems to not support HDR textures, but the shaders seem to compile correctly.

Issues in video

Z-Fighting.mp4

Finally

Everything, whether it's image generation/manipulation, shape rendering (2D/3D), model animation, gestures, fonts, sound, shaders, etc... Everything seems to work apart from the Z-fighting problem that I noticed for 3D.

Edit: Honestly, this Android test is quite successful, and the third issue doesn't even belong here, but well, we need to fill the report, lol.

ghost · 2023-11-01T03:45:31Z

@raysan5 Updated the status table (#3487 (comment)) with the comments on the other DRM examples.

Bigfoot71 · 2023-11-02T17:34:49Z

@raysan5 I found how to resolve the Z-Fighting issue I mentioned earlier. (on Android)

You need to modify the floating-point precision of the default shader as follows:

#if defined(GRAPHICS_API_OPENGL_ES2)
    "#version 100                       \n"
-   "precision mediump float;           \n"     // Precision required for OpenGL ES2 (WebGL) (on some browsers)
+   "precision highp float;             \n"     // Precision required for OpenGL ES2 (WebGL) (on some browsers)
    "attribute vec3 vertexPosition;     \n"
    "attribute vec2 vertexTexCoord;     \n"
    "attribute vec4 vertexColor;        \n"
    "varying vec2 fragTexCoord;         \n"
    "varying vec4 fragColor;            \n"
#endif

However, after some research, it seems that this Z-Fighting issue, which can be resolved by modifying the floating-point precision in the shader, only occurs on certain devices (not high-end or older ones).

ghost · 2023-11-02T17:58:18Z

@Bigfoot71 Related: #3260, #3261.

Bigfoot71 · 2023-11-02T18:22:15Z

So in short, highp cause some browsers issues for compiling the shader, so the solution was to use mediump, which doesn't seem to have caused any visual issues on PLATFORM_WEB so far, but it does cause issues on some Android devices.

ghost · 2023-11-02T18:43:05Z

@Bigfoot71 Perhaps an #ifdef there could solve that for both?

#if defined(PLATFORM_WEB)
   "precision mediump float;           \n"     // Precision required for OpenGL ES2 (WebGL) (on some browsers)
#elif defined(PLATFORM_ANDROID)
   "precision highp float;             \n"
#endif

Bigfoot71 · 2023-11-02T20:07:02Z

@ubkp I thought about it, but it's not very clean, is it? Though it would certainly reconcile both issues.
Perhaps it would be a good idea to at least comment the explanation, I'm in favor of it; let's see what @raysan5 thinks. He seemed inclined to remove it at the slightest issue.

raysan5 · 2023-11-02T20:15:33Z

I think this is not the best approach, many Android devices do not support highp requirement and afair, this hint only defines the minimum precision requirement, it's up to the driver to do it or not or choose a higher precission if available.

EDIT: Also note, in raylib I always priorize supporting old and low-end devices.

Bigfoot71 · 2023-11-02T20:27:57Z

@raysan5 I think we should be able to do something like this to check if the device is capable of supporting highp or not (doc):

#if defined(GL_FRAGMENT_PRECISION_HIGH)
    precision highp float;
#else
    precision mediump float;
#endif

But it's not any cleaner, anyway. So we leave it as is I guess.

This issue with mediump and Z-Fighting only occurs on certain devices and under certain conditions. I hadn't even noticed it on my device during "normal" use.

raysan5 · 2023-11-02T20:35:59Z

This issue with mediump and Z-Fighting only occurs on certain devices and under certain conditions. I hadn't even noticed it on my device during "normal" use.

@Bigfoot71 I really think it's platform/drivers-dependant and there is not a good solution to cover most use case. Better leave it as it is. In any case, advance users can change it for their needs depending on their target audience and development process.

raysan5 · 2023-11-05T19:19:46Z

@ubkp @Bigfoot71 I reviewed rlgl_standalone example, I'm afraid it is PLATFORM_DESKTOP exclusive and supporting other platforms would require some redesign. I just added a note explaining this. The examples uses GLFW to initialize the platform layer and the OpenGL 3.3 Core profile context. It could work on web with OpenGL ES 2.0 but it would need a redesign, I think it's out-of-scope for the moment for this example.

Actually, all examples in others are somewhat special and are not intended to work on all platforms or under "all scenarios".

I think we can continue with the raylib 5.0 release despite some issues with the examples, they can be reviewed in the future as required.

As a side note, today I implemented a tool to update examples open-graph metada, so examples can be shared on multiple social networks (X, Mastodon, LinkedIn, Discord...) with a fancy visual card showing each example details. I will provide more info asap.

Example is intended for `PLATFORM_DESKTOP` only and OpenGL 3.3 Core profile.

ghost · 2023-11-05T20:42:15Z

I think we can continue with the raylib 5.0 release despite some issues with the examples, they can be reviewed in the future as required.

Agreed. I think the major problems were solved or documented. The examples issues left don't appear to be super critical.

As a side note, today I implemented a tool to update examples open-graph metada, so examples can be shared on multiple social networks (X, Mastodon, LinkedIn, Discord...) with a fancy visual card showing each example details. I will provide more info asap.

That's awesome! 👍

erikyuzwa · 2023-12-15T02:52:59Z

Not sure if it's related, but on Desktop, the core_3d_camera_first_person.c example doesn't work with raylib5. The UI shows up but none of the 3d geography does.

ghost · 2023-12-15T03:03:24Z

@erikyuzwa Compiled core_3d_camera_first_person from current master branch (10c8259) right now and it's working correctly for me on PLATFORM_DESKTOP. Tested on Linux (Ubuntu 22.04 64-bit). Screenshot:

Could you post the log so we can see if there's some error there?

erikyuzwa · 2023-12-15T03:24:06Z

totally believe you @ubkp - I'm using the gamejam template on VS2022. Other examples have worked ok as-is up until now. I don't see a log, but I've confirmed I'm building in debug mode.

i've even removed the raylib project in the game template, pulled down a fresh git clone of raylib and am linking to that. Same result.

ghost · 2023-12-15T03:31:03Z

@erikyuzwa All the examples should output a standard log by default on the terminal/console. Something like this:

INFO: Initializing raylib 5.1-dev
INFO: Platform backend: DESKTOP (GLFW)
INFO: Supported raylib modules:
INFO:     > rcore:..... loaded (mandatory)
INFO:     > rlgl:...... loaded (mandatory)
INFO:     > rshapes:... loaded (optional)
INFO:     > rtextures:. loaded (optional)
INFO:     > rtext:..... loaded (optional)
INFO:     > rmodels:... loaded (optional)
INFO:     > raudio:.... loaded (optional)
INFO: DISPLAY: Device initialized successfully
INFO:     > Display size: 1600 x 900
INFO:     > Screen size:  800 x 450
INFO:     > Render size:  800 x 450
INFO:     > Viewport offsets: 0, 0
INFO: GLAD: OpenGL extensions loaded successfully
INFO: GL: Supported extensions count: 173
INFO: GL: OpenGL device information:
INFO:     > Vendor:   Intel
INFO:     > Renderer: Mesa Intel(R) HD Graphics 3000 (SNB GT2)
INFO:     > Version:  3.3 (Core Profile) Mesa 23.0.4-0ubuntu1~22.04.1
INFO:     > GLSL:     3.30
INFO: GL: VAO extension detected, VAO functions loaded successfully
INFO: GL: NPOT textures extension detected, full NPOT textures supported
INFO: GL: DXT compressed textures supported
INFO: GL: ETC2/EAC compressed textures supported
INFO: PLATFORM: DESKTOP (GLFW): Initialized successfully
INFO: TEXTURE: [ID 1] Texture loaded successfully (1x1 | R8G8B8A8 | 1 mipmaps)
INFO: TEXTURE: [ID 1] Default texture loaded successfully
INFO: SHADER: [ID 1] Vertex shader compiled successfully
INFO: SHADER: [ID 2] Fragment shader compiled successfully
INFO: SHADER: [ID 3] Program shader loaded successfully
INFO: SHADER: [ID 3] Default shader loaded successfully
INFO: RLGL: Render batch vertex buffers loaded successfully in RAM (CPU)
INFO: RLGL: Render batch vertex buffers loaded successfully in VRAM (GPU)
INFO: RLGL: Default OpenGL state initialized successfully
INFO: TEXTURE: [ID 2] Texture loaded successfully (128x128 | GRAY_ALPHA | 1 mipmaps)
INFO: FONT: Default font loaded successfully (224 glyphs)
INFO: TIMER: Target time per frame: 16.667 milliseconds
INFO: TEXTURE: [ID 2] Unloaded texture data from VRAM (GPU)
INFO: SHADER: [ID 3] Default shader unloaded successfully
INFO: TEXTURE: [ID 1] Default texture unloaded successfully
INFO: Window closed successfully

Since you're on Windows, please check if your compiler is using the -mwindows flag or -Wl,--subsystem,windows (which will hide the console on Windows). In that case, please remove that temporarily, recompile the example and try opening it on the terminal/console.

Edits: 1. editing; 2. correction.

erikyuzwa · 2023-12-15T13:24:14Z

thanks for your patience. Yes, of course it's there in that console window - my bad. (I'm used to web servers all day and scouring through and tailing log files).

If you'd prefer me moving this to a new issue I'm fine with that too

Here's what I'm seeing:

INFO: Initializing raylib 5.1-dev
INFO: Platform backend: DESKTOP (GLFW)
INFO: Supported raylib modules:
INFO:     > rcore:..... loaded (mandatory)
INFO:     > rlgl:...... loaded (mandatory)
INFO:     > rshapes:... loaded (optional)
INFO:     > rtextures:. loaded (optional)
INFO:     > rtext:..... loaded (optional)
INFO:     > rmodels:... loaded (optional)
INFO:     > raudio:.... loaded (optional)
INFO: DISPLAY: Device initialized successfully
INFO:     > Display size: 1920 x 1080
INFO:     > Screen size:  1280 x 720
INFO:     > Render size:  1280 x 720
INFO:     > Viewport offsets: 0, 0
INFO: GLAD: OpenGL extensions loaded successfully
INFO: GL: Supported extensions count: 400
INFO: GL: OpenGL device information:
INFO:     > Vendor:   NVIDIA Corporation
INFO:     > Renderer: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2
INFO:     > Version:  3.3.0 NVIDIA 546.33
INFO:     > GLSL:     3.30 NVIDIA via Cg compiler
INFO: GL: VAO extension detected, VAO functions loaded successfully
INFO: GL: NPOT textures extension detected, full NPOT textures supported
INFO: GL: DXT compressed textures supported
INFO: GL: ETC2/EAC compressed textures supported
INFO: PLATFORM: DESKTOP (GLFW): Initialized successfully
INFO: TEXTURE: [ID 1] Texture loaded successfully (1x1 | R8G8B8A8 | 1 mipmaps)
INFO: TEXTURE: [ID 1] Default texture loaded successfully
INFO: SHADER: [ID 1] Vertex shader compiled successfully
INFO: SHADER: [ID 2] Fragment shader compiled successfully
INFO: SHADER: [ID 3] Program shader loaded successfully
INFO: SHADER: [ID 3] Default shader loaded successfully
INFO: RLGL: Render batch vertex buffers loaded successfully in RAM (CPU)
INFO: RLGL: Render batch vertex buffers loaded successfully in VRAM (GPU)
INFO: RLGL: Default OpenGL state initialized successfully
INFO: TEXTURE: [ID 2] Texture loaded successfully (128x128 | GRAY_ALPHA | 1 mipmaps)
INFO: FONT: Default font loaded successfully (224 glyphs)
INFO: TIMER: Target time per frame: 16.667 milliseconds
INFO: TEXTURE: [ID 3] Texture loaded successfully (1280x720 | R8G8B8A8 | 1 mipmaps)
INFO: TEXTURE: [ID 1] Depth renderbuffer loaded successfully (32 bits)
INFO: FBO: [ID 1] Framebuffer object created successfully
INFO: TIMER: Target time per frame: 16.667 milliseconds
INFO: FBO: [ID 1] Unloaded framebuffer from VRAM (GPU)
INFO: TEXTURE: [ID 2] Unloaded texture data from VRAM (GPU)
INFO: SHADER: [ID 3] Default shader unloaded successfully
INFO: TEXTURE: [ID 1] Default texture unloaded successfully
INFO: Window closed successfully```

ghost · 2023-12-15T13:35:58Z

@erikyuzwa Yeah, probably a better idea to open a new issue regarding this one.
Thanks for the log. There's something there I don't recall seeing before. On this section:

INFO: TEXTURE: [ID 2] Texture loaded successfully (128x128 | GRAY_ALPHA | 1 mipmaps)
INFO: FONT: Default font loaded successfully (224 glyphs)
INFO: TIMER: Target time per frame: 16.667 milliseconds
INFO: TEXTURE: [ID 3] Texture loaded successfully (1280x720 | R8G8B8A8 | 1 mipmaps)
INFO: TEXTURE: [ID 1] Depth renderbuffer loaded successfully (32 bits)
INFO: FBO: [ID 1] Framebuffer object created successfully
INFO: TIMER: Target time per frame: 16.667 milliseconds

Not sure why it's doing this:

INFO: TEXTURE: [ID 3] Texture loaded successfully (1280x720 | R8G8B8A8 | 1 mipmaps)
INFO: TEXTURE: [ID 1] Depth renderbuffer loaded successfully (32 bits)
INFO: FBO: [ID 1] Framebuffer object created successfully
INFO: TIMER: Target time per frame: 16.667 milliseconds

Are you using the stock examples/core/core_3d_camera_first_person.c example without modifications?

Edit: typo, editing.

ghost · 2023-12-15T14:02:57Z

@erikyuzwa You mentioned you're using the gamejam template, right?
By any chance are you testing using this structure?
If so, please test using just this (exactly as is) instead.

erikyuzwa · 2023-12-15T15:16:57Z

@ubkp - that worked! Thanks so much. Not sure why the same code dropped into the rendering in the game template didn't but I'll leave that until I work more with textures - thank you SO much and apologies for polluting the OG issue with this.

Here's the log just in case it helps. I will also go through the source to see if I can pipe the log to a file (for eventual testers).

INFO: Initializing raylib 5.1-dev
INFO: Platform backend: DESKTOP (GLFW)
INFO: Supported raylib modules:
INFO:     > rcore:..... loaded (mandatory)
INFO:     > rlgl:...... loaded (mandatory)
INFO:     > rshapes:... loaded (optional)
INFO:     > rtextures:. loaded (optional)
INFO:     > rtext:..... loaded (optional)
INFO:     > rmodels:... loaded (optional)
INFO:     > raudio:.... loaded (optional)
INFO: DISPLAY: Device initialized successfully
INFO:     > Display size: 1920 x 1080
INFO:     > Screen size:  800 x 450
INFO:     > Render size:  800 x 450
INFO:     > Viewport offsets: 0, 0
INFO: GLAD: OpenGL extensions loaded successfully
INFO: GL: Supported extensions count: 400
INFO: GL: OpenGL device information:
INFO:     > Vendor:   NVIDIA Corporation
INFO:     > Renderer: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2
INFO:     > Version:  3.3.0 NVIDIA 546.33
INFO:     > GLSL:     3.30 NVIDIA via Cg compiler
INFO: GL: VAO extension detected, VAO functions loaded successfully
INFO: GL: NPOT textures extension detected, full NPOT textures supported
INFO: GL: DXT compressed textures supported
INFO: GL: ETC2/EAC compressed textures supported
INFO: PLATFORM: DESKTOP (GLFW): Initialized successfully
INFO: TEXTURE: [ID 1] Texture loaded successfully (1x1 | R8G8B8A8 | 1 mipmaps)
INFO: TEXTURE: [ID 1] Default texture loaded successfully
INFO: SHADER: [ID 1] Vertex shader compiled successfully
INFO: SHADER: [ID 2] Fragment shader compiled successfully
INFO: SHADER: [ID 3] Program shader loaded successfully
INFO: SHADER: [ID 3] Default shader loaded successfully
INFO: RLGL: Render batch vertex buffers loaded successfully in RAM (CPU)
INFO: RLGL: Render batch vertex buffers loaded successfully in VRAM (GPU)
INFO: RLGL: Default OpenGL state initialized successfully
INFO: TEXTURE: [ID 2] Texture loaded successfully (128x128 | GRAY_ALPHA | 1 mipmaps)
INFO: FONT: Default font loaded successfully (224 glyphs)
INFO: TIMER: Target time per frame: 16.667 milliseconds
INFO: TEXTURE: [ID 2] Unloaded texture data from VRAM (GPU)
INFO: SHADER: [ID 3] Default shader unloaded successfully
INFO: TEXTURE: [ID 1] Default texture unloaded successfully
INFO: Window closed successfully

ghost · 2023-12-15T15:35:43Z

@erikyuzwa No problem, glad it worked. :)

I think the problem was that the gamejam template basic structure, for some reason, opts to render to a texture (L79-L82, L124-L130) and them render that texture to screen (L133-L141).

Most of the examples use a far simpler method of just rendering things directly to screen (e.g.: L144-L196), which is probably what I would recommend using while you're getting used to raylib.

Regarding the log, on Linux it's usually just a matter of piping the log to a file (e.g.: ./core_3d_camera_first_person > LOG). Windows probably have something similar to that, although I don't know the syntax.

Edit: typo.

raysan5 · 2023-12-15T16:11:55Z

@ubkp @erikyuzwa the gamejam template actually belongs to a previous gamejam that required a 32x32 pixels game and it included code to scale that game x4, so I kept the RenderTexture for convenience, also useful to deal with fixed game sizes/screen-ratios that need to be scaled to screen later on.

About the log output to file, afair, in Windows CMD, core_3d_camera_first_person > mylog.txt should work. But you also have SetTraceLogCallback(TraceLogCallback callback) to output the log messages wherever you want.

erikyuzwa · 2023-12-16T15:56:49Z

appreciate the followup and insight there @raysan5 🙇

iacore · 2023-12-25T05:59:21Z

I found a bug, where rlgl_standalone doesn't link GLFW with cmake -D BUILD_SHARED_LIBS=ON.

crystalthoughts · 2024-01-19T11:15:41Z

The compute shader example doesn't seem to do anything now . I tried both an Odin port and building the VS2022 example. Black screen with GUI but nothing else

raysan5 · 2024-01-20T20:27:32Z

@crystalthoughts Note that compute shader example requires recompiling raylib for OpenGL 4.3.

crystalthoughts · 2024-01-20T22:10:27Z

Thanks Ray I'll give it a go (soonish) and report back if there's still an issue

colesnicov · 2024-04-30T07:48:34Z

On RPI 2B core_basic_window looks good but others...:

denis@raspberrypi:~/dev/raylib-5.0/examples $ make PLATFORM=PLATFORM_DRM
gcc -o others/raylib_opengl_interop others/raylib_opengl_interop.c -Wall -std=c99 -D_DEFAULT_SOURCE -Wno-missing-braces -Wunused-result -O2 -std=gnu99 -DEGL_NO_X11 -I. -I../src -I../src/external -I/usr/local/include -I/usr/include/libdrm -I../src/external/glfw/include -L. -L../src -L../src -lraylib -lGLESv2 -lEGL -lpthread -lrt -lm -lgbm -ldrm -ldl -latomic -DPLATFORM_DRM
others/raylib_opengl_interop.c: In function ‘main’:
others/raylib_opengl_interop.c:94:5: error: unknown type name ‘GLuint’
   94 |     GLuint vao = 0;
      |     ^~~~~~
others/raylib_opengl_interop.c:95:5: error: unknown type name ‘GLuint’
   95 |     GLuint vbo = 0;
      |     ^~~~~~
others/raylib_opengl_interop.c:96:5: warning: implicit declaration of function ‘glGenVertexArrays’ [-Wimplicit-function-declaration]
   96 |     glGenVertexArrays(1, &vao);
      |     ^~~~~~~~~~~~~~~~~
others/raylib_opengl_interop.c:97:5: warning: implicit declaration of function ‘glBindVertexArray’; did you mean ‘rlLoadVertexArray’? [-Wimplicit-function-declaration]
   97 |     glBindVertexArray(vao);
      |     ^~~~~~~~~~~~~~~~~
      |     rlLoadVertexArray
others/raylib_opengl_interop.c:98:9: warning: implicit declaration of function ‘glGenBuffers’ [-Wimplicit-function-declaration]
   98 |         glGenBuffers(1, &vbo);
      |         ^~~~~~~~~~~~
others/raylib_opengl_interop.c:99:9: warning: implicit declaration of function ‘glBindBuffer’ [-Wimplicit-function-declaration]
   99 |         glBindBuffer(GL_ARRAY_BUFFER, vbo);
      |         ^~~~~~~~~~~~
others/raylib_opengl_interop.c:99:22: error: ‘GL_ARRAY_BUFFER’ undeclared (first use in this function)
   99 |         glBindBuffer(GL_ARRAY_BUFFER, vbo);
      |                      ^~~~~~~~~~~~~~~
others/raylib_opengl_interop.c:99:22: note: each undeclared identifier is reported only once for each function it appears in
others/raylib_opengl_interop.c:100:9: warning: implicit declaration of function ‘glBufferData’ [-Wimplicit-function-declaration]
  100 |         glBufferData(GL_ARRAY_BUFFER, MAX_PARTICLES*sizeof(Particle), particles, GL_STATIC_DRAW);
      |         ^~~~~~~~~~~~
others/raylib_opengl_interop.c:100:82: error: ‘GL_STATIC_DRAW’ undeclared (first use in this function); did you mean ‘RL_STATIC_DRAW’?
  100 |         glBufferData(GL_ARRAY_BUFFER, MAX_PARTICLES*sizeof(Particle), particles, GL_STATIC_DRAW);
      |                                                                                  ^~~~~~~~~~~~~~
      |                                                                                  RL_STATIC_DRAW
others/raylib_opengl_interop.c:102:9: warning: implicit declaration of function ‘glVertexAttribPointer’ [-Wimplicit-function-declaration]
  102 |         glVertexAttribPointer(shader.locs[SHADER_LOC_VERTEX_POSITION], 3, GL_FLOAT, GL_FALSE, 0, 0);
      |         ^~~~~~~~~~~~~~~~~~~~~
others/raylib_opengl_interop.c:102:75: error: ‘GL_FLOAT’ undeclared (first use in this function); did you mean ‘RL_FLOAT’?
  102 |         glVertexAttribPointer(shader.locs[SHADER_LOC_VERTEX_POSITION], 3, GL_FLOAT, GL_FALSE, 0, 0);
      |                                                                           ^~~~~~~~
      |                                                                           RL_FLOAT
others/raylib_opengl_interop.c:102:85: error: ‘GL_FALSE’ undeclared (first use in this function)
  102 |         glVertexAttribPointer(shader.locs[SHADER_LOC_VERTEX_POSITION], 3, GL_FLOAT, GL_FALSE, 0, 0);
      |                                                                                     ^~~~~~~~
others/raylib_opengl_interop.c:103:9: warning: implicit declaration of function ‘glEnableVertexAttribArray’; did you mean ‘rlEnableVertexAttribute’? [-Wimplicit-function-declaration]
  103 |         glEnableVertexAttribArray(0);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
      |         rlEnableVertexAttribute
others/raylib_opengl_interop.c:109:5: warning: implicit declaration of function ‘glEnable’ [-Wimplicit-function-declaration]
  109 |     glEnable(GL_PROGRAM_POINT_SIZE);
      |     ^~~~~~~~
others/raylib_opengl_interop.c:109:14: error: ‘GL_PROGRAM_POINT_SIZE’ undeclared (first use in this function)
  109 |     glEnable(GL_PROGRAM_POINT_SIZE);
      |              ^~~~~~~~~~~~~~~~~~~~~
others/raylib_opengl_interop.c:130:13: warning: implicit declaration of function ‘glUseProgram’ [-Wimplicit-function-declaration]
  130 |             glUseProgram(shader.id);
      |             ^~~~~~~~~~~~
others/raylib_opengl_interop.c:132:17: warning: implicit declaration of function ‘glUniform1f’ [-Wimplicit-function-declaration]
  132 |                 glUniform1f(currentTimeLoc, GetTime());
      |                 ^~~~~~~~~~~
others/raylib_opengl_interop.c:135:17: warning: implicit declaration of function ‘glUniform4fv’ [-Wimplicit-function-declaration]
  135 |                 glUniform4fv(colorLoc, 1, (float *)&color);
      |                 ^~~~~~~~~~~~
others/raylib_opengl_interop.c:140:17: warning: implicit declaration of function ‘glUniformMatrix4fv’ [-Wimplicit-function-declaration]
  140 |                 glUniformMatrix4fv(shader.locs[SHADER_LOC_MATRIX_MVP], 1, false, MatrixToFloat(modelViewProjection));
      |                 ^~~~~~~~~~~~~~~~~~
others/raylib_opengl_interop.c:143:21: warning: implicit declaration of function ‘glDrawArrays’ [-Wimplicit-function-declaration]
  143 |                     glDrawArrays(GL_POINTS, 0, MAX_PARTICLES);
      |                     ^~~~~~~~~~~~
others/raylib_opengl_interop.c:143:34: error: ‘GL_POINTS’ undeclared (first use in this function)
  143 |                     glDrawArrays(GL_POINTS, 0, MAX_PARTICLES);
      |                                  ^~~~~~~~~
others/raylib_opengl_interop.c:157:5: warning: implicit declaration of function ‘glDeleteBuffers’ [-Wimplicit-function-declaration]
  157 |     glDeleteBuffers(1, &vbo);
      |     ^~~~~~~~~~~~~~~
others/raylib_opengl_interop.c:158:5: warning: implicit declaration of function ‘glDeleteVertexArrays’; did you mean ‘rlDrawVertexArray’? [-Wimplicit-function-declaration]
  158 |     glDeleteVertexArrays(1, &vao);
      |     ^~~~~~~~~~~~~~~~~~~~
      |     rlDrawVertexArray
make: *** [Makefile:612: others/raylib_opengl_interop] Error 1

raysan5 · 2024-04-30T09:21:17Z

@colesnicov this is a special example to illustrate raylib interoperatibility with OpenGL, it requires including OpenGL libraries.

colesnicov · 2024-05-02T17:05:42Z

@colesnicov this is a special example to illustrate raylib interoperatibility with OpenGL, it requires including OpenGL libraries.

I want to try to run the rest of the examples. Here I tried to fix https://github.com/raysan5/raylib/blob/master/examples/others/raylib_opengl_interop.c

I changed the code on the line

raylib/examples/others/raylib_opengl_interop.c

Line 29 in f100755

#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_DESKTOP_SDL)

as follows:
#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_DESKTOP_SDL) || defined(PLATFORM_DRM)

Heres the log:

denis@raspberrypi:~/dev/raylib/examples $ make PLATFORM=PLATFORM_DRM
gcc -o others/raylib_opengl_interop others/raylib_opengl_interop.c -Wall -std=c99 -D_DEFAULT_SOURCE -Wno-missing-braces -Wunused-result -O2 -std=gnu99 -DEGL_NO_X11 -I. -I../src -I../src/external -I/usr/local/include -I/usr/include/libdrm -I../src/external/glfw/include -L. -L../src -L../src -lraylib -lGLESv2 -lEGL -lpthread -lrt -lm -lgbm -ldrm -ldl -latomic -DPLATFORM_DRM
/usr/bin/ld: /tmp/ccbgpmF5.o: in function `main':
raylib_opengl_interop.c:(.text.startup+0x208): undefined reference to `glad_glGenVertexArrays'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x20c): undefined reference to `glad_glBindVertexArray'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x210): undefined reference to `glad_glGenBuffers'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x214): undefined reference to `glad_glBindBuffer'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x21c): undefined reference to `glad_glBufferData'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x224): undefined reference to `glad_glVertexAttribPointer'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x230): undefined reference to `glad_glUseProgram'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x234): undefined reference to `glad_glEnableVertexAttribArray'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x238): undefined reference to `glad_glEnable'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x248): undefined reference to `glad_glUniform1f'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x250): undefined reference to `glad_glUniform4fv'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x254): undefined reference to `glad_glUniformMatrix4fv'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x258): undefined reference to `glad_glDrawArrays'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x25c): undefined reference to `glad_glDeleteBuffers'
/usr/bin/ld: raylib_opengl_interop.c:(.text.startup+0x260): undefined reference to `glad_glDeleteVertexArrays'
collect2: error: ld returned 1 exit status
make: *** [Makefile:616: others/raylib_opengl_interop] Error 1

you have glad.h in the external folder but you're missing glad.c and I'm not sure how to proceed here. Where should I take it? I don't know much about it, then.

colesnicov · 2024-05-02T17:30:18Z

I found this https://gen.glad.sh/, and I'm a deer for it :D .

raysan5 · 2024-05-05T09:38:39Z

@colesnicov Just note that I'm planning to remove glad from raylib dependencies and just load required extensions manually. It would reduce initialization times and memory required... as well as an external dependency.

colesnicov · 2024-05-05T09:56:56Z

Most of the example after adjusting the size, I made it global:

find . -type f -name "*.c" -print0 | xargs -0 sed -i -e 's/screenHeight = 450/screenHeight =
1280/g'

and

find . -type f -name "*.c" -print0 | xargs -0 sed -i -e 's/screenWidth = 800/screenWidth = 400
g'

from folder examples work without problems.

This applies to RayGUI as well.

raysan5 · 2024-08-24T18:11:32Z

I'm closing this issue, examples issues would be opened per individual examples when required.

ghost mentioned this issue Oct 30, 2023

[examples] Fix core_3d_camera_free #3488

Merged

ghost mentioned this issue Oct 31, 2023

[core] Fix relative mouse mode for PLATFORM_DRM #3492

Merged

ghost mentioned this issue Nov 1, 2023

[core] Moves keymapUS[] and fixes GetCharPressed for PLATFORM_DRM #3498

Merged

raysan5 added a commit that referenced this issue Nov 5, 2023

REVIEWED: rlgl_standalone examples #3487

2a67ac0

Example is intended for `PLATFORM_DESKTOP` only and OpenGL 3.3 Core profile.

AriaMoKr mentioned this issue Apr 10, 2024

[rcore] Previous gamepad button press isn't tracked on Android #3909

Closed

colesnicov mentioned this issue Apr 30, 2024

[core] demo's not working rpi4 kernel 5.10 #1509

Closed

raysan5 closed this as completed Aug 24, 2024

[examples] Review some examples not working properly on several platforms #3487

[examples] Review some examples not working properly on several platforms #3487

Comments

raysan5 commented Oct 30, 2023 • edited Loading

Issues on multiple platforms

Issues on PLATFORM_DESKTOP, macOS (and maybe other platforms/OSs)

Issues on PLATFORM_WEB

Issues on PLATFORM_DRM

raysan5 commented Oct 30, 2023

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Notes

Edits

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SuperUserNameMan commented Oct 31, 2023

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Android Tests

Issues

Issues in video

Finally

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raysan5 commented Oct 30, 2023 •

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Issues on `PLATFORM_DESKTOP`, macOS (and maybe other platforms/OSs)

Issues on `PLATFORM_WEB`

Issues on `PLATFORM_DRM`

ghost commented Oct 30, 2023 •

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