Sébastien de Graffenried
@sebdegraff.bsky.social
Game dev, working on Terraformers terraformers-game.com
Game jams, homemade game engine dev.
Sometimes streaming on youtube:
🔴 https://www.youtube.com/@seb_degraff/streams
Also on mastodon:
🐘 http://mastodon.gamedev.place/@seb_degraff
Game jams, homemade game engine dev.
Sometimes streaming on youtube:
🔴 https://www.youtube.com/@seb_degraff/streams
Also on mastodon:
🐘 http://mastodon.gamedev.place/@seb_degraff
reimporting the project, it's been stuck on this for 30 mins. Took me a while to realize that it's processing the same atlas in a loop. Trying to kill and restart 😒
October 9, 2025 at 10:30 AM
reimporting the project, it's been stuck on this for 30 mins. Took me a while to realize that it's processing the same atlas in a loop. Trying to kill and restart 😒
"Just patch the game" they said. "It will be easy" they said.
October 9, 2025 at 9:43 AM
"Just patch the game" they said. "It will be easy" they said.
Added a histogram. It accumulates the durations of all zones that have the same name as the selected one
October 8, 2025 at 12:35 PM
Added a histogram. It accumulates the durations of all zones that have the same name as the selected one
-Wundef where have you been all my life?
September 29, 2025 at 12:24 PM
-Wundef where have you been all my life?
🔴 Livestreaming in 30 min:
Adding items that entities can drop when they die or are destroyed. This is yet another project – a game we're prototyping with my studio, Asteroid Lab.
Made in a custom engine, in C. #indiedev
www.youtube.com/watch?v=Y0Q5...
Adding items that entities can drop when they die or are destroyed. This is yet another project – a game we're prototyping with my studio, Asteroid Lab.
Made in a custom engine, in C. #indiedev
www.youtube.com/watch?v=Y0Q5...
September 19, 2025 at 10:48 AM
🔴 Livestreaming in 30 min:
Adding items that entities can drop when they die or are destroyed. This is yet another project – a game we're prototyping with my studio, Asteroid Lab.
Made in a custom engine, in C. #indiedev
www.youtube.com/watch?v=Y0Q5...
Adding items that entities can drop when they die or are destroyed. This is yet another project – a game we're prototyping with my studio, Asteroid Lab.
Made in a custom engine, in C. #indiedev
www.youtube.com/watch?v=Y0Q5...
proof of concept of polling for thread state to show approx. when they are running vs suspended.
Here you can see that for during "currentDrawable" the thread is sleeping.
Here you can see that for during "currentDrawable" the thread is sleeping.
September 17, 2025 at 10:07 AM
proof of concept of polling for thread state to show approx. when they are running vs suspended.
Here you can see that for during "currentDrawable" the thread is sleeping.
Here you can see that for during "currentDrawable" the thread is sleeping.
Went with adding a scrollbar to the scrubber for now, and made it automatically scroll "page by page" so it's not constantly moving.
Added some time controls, the ability to enable/disable recording, and the ability to toggle "sticking" to the last recorded frame.
Added some time controls, the ability to enable/disable recording, and the ability to toggle "sticking" to the last recorded frame.
September 13, 2025 at 7:37 PM
Went with adding a scrollbar to the scrubber for now, and made it automatically scroll "page by page" so it's not constantly moving.
Added some time controls, the ability to enable/disable recording, and the ability to toggle "sticking" to the last recorded frame.
Added some time controls, the ability to enable/disable recording, and the ability to toggle "sticking" to the last recorded frame.
Added scrubbing through the recorded frames.
But what should I do when the number of recorded frames is bigger than I can fit in the scrubber? I could add another scrubber for the scrubber, but...
Any ideas for something more elegant?
But what should I do when the number of recorded frames is bigger than I can fit in the scrubber? I could add another scrubber for the scrubber, but...
Any ideas for something more elegant?
September 13, 2025 at 3:13 PM
Added scrubbing through the recorded frames.
But what should I do when the number of recorded frames is bigger than I can fit in the scrubber? I could add another scrubber for the scrubber, but...
Any ideas for something more elegant?
But what should I do when the number of recorded frames is bigger than I can fit in the scrubber? I could add another scrubber for the scrubber, but...
Any ideas for something more elegant?
And here are the (potentially more interesting) exposed data structures from the profiler. The profiler window reads this directly to display the zones.
I'm wondering if I should transform the raw events into "zones" when flushing a thread. There are some other considerations, see 2nd screenshot.
I'm wondering if I should transform the raw events into "zones" when flushing a thread. There are some other considerations, see 2nd screenshot.
![#pragma once
#include "rdx_new_base.h"
#include "rdx_platform.h" // uh! @cleanup @urgent
typedef enum rdx_prof2_event_type_t {
RDX_PROF2_EVENT_TYPE_None = 0, // Invalid event type
RDX_PROF2_EVENT_TYPE_Begin = 1,
RDX_PROF2_EVENT_TYPE_End = 2,
RDX_PROF2_EVENT_TYPE_Extra_Info = 3,
} rdx_prof2_event_type_t;
// stored chunks
typedef struct rdx_profile_chunk_t rdx_profile_chunk_t;
struct rdx_profile_chunk_t {
rdx_profile_chunk_t* next_chunk;
// uint32_t thread_id;
uint32_t frame_num;
uint64_t time_start;
uint64_t time_end;
uint64_t* events_data;
int64_t events_array_length; // essentially (bytes_size/8)
};
// global state
typedef struct rdx_prof2_global_state_t {
uint64_t base_ticks;
uint64_t freq_ticks;
rdx_arena_t* arena;
rdx_profile_chunk_t* thread_chuncks[64]; // one linked list per thread
int next_thread_idx;
rdx_mutex_t mutex;
uint32_t current_frame_num;
bool initialized;
} rdx_prof2_global_state_t;
#define _RDX_PROF2_THREAD_BUFFER_SZ rdx_MiB(1)
typedef struct rdx_prof2_thread_state_t {
uint64_t* buffer_base;
uint64_t* buffer_head;
int thread_idx;
bool initialized;
} rdx_prof2_thread_state_t;
extern rdx_prof2_global_state_t _rdx_prof2_global_state;
extern __thread rdx_prof2_thread_state_t _rdx_prof2_thread_state; // NOTE: needs to be exposed so we can make
// inline versions of the push/pop functions.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:ntb5xy4nei2zi22wutmoo3ha/bafkreibgp36lrein2ya2aiorjn37lntrh4yaeov4cdc2uhzh5yc2r27pj4@jpeg)
September 13, 2025 at 12:27 PM
And here are the (potentially more interesting) exposed data structures from the profiler. The profiler window reads this directly to display the zones.
I'm wondering if I should transform the raw events into "zones" when flushing a thread. There are some other considerations, see 2nd screenshot.
I'm wondering if I should transform the raw events into "zones" when flushing a thread. There are some other considerations, see 2nd screenshot.
Here's how the api looks like so far. Pretty clean I think!
Each thread has a thread local pointer to a buffer it records events into, and must flush every so often.
Each thread has a thread local pointer to a buffer it records events into, and must flush every so often.
September 13, 2025 at 12:17 PM
Here's how the api looks like so far. Pretty clean I think!
Each thread has a thread local pointer to a buffer it records events into, and must flush every so often.
Each thread has a thread local pointer to a buffer it records events into, and must flush every so often.
I'm rewriting my profiler to support multithreading and it's starting to work! You can see the audio thread chugging along the main thread here:
September 13, 2025 at 12:01 PM
I'm rewriting my profiler to support multithreading and it's starting to work! You can see the audio thread chugging along the main thread here:
Automatically adding metadata to struct members upon saving!
This works on top of a custom build system that watches for file changes, then parses the structs in the file to generate reflection data.
Now it also inserts code in the source file. Feels kind of forbidden, but also feels nice!
This works on top of a custom build system that watches for file changes, then parses the structs in the file to generate reflection data.
Now it also inserts code in the source file. Feels kind of forbidden, but also feels nice!
September 10, 2025 at 10:15 AM
Automatically adding metadata to struct members upon saving!
This works on top of a custom build system that watches for file changes, then parses the structs in the file to generate reflection data.
Now it also inserts code in the source file. Feels kind of forbidden, but also feels nice!
This works on top of a custom build system that watches for file changes, then parses the structs in the file to generate reflection data.
Now it also inserts code in the source file. Feels kind of forbidden, but also feels nice!
All good!
By running with the chrome profiler, I noticed there was a lot of time spend in _glGetError. I tried defining _SG_GL_CHECK_ERROR to nothing, and that made it buttery smooth!
Perhaps there should be less calls to _SG_GL_CHECK_ERROR when SOKOL_DEBUG is off? Or a faster alternative?
By running with the chrome profiler, I noticed there was a lot of time spend in _glGetError. I tried defining _SG_GL_CHECK_ERROR to nothing, and that made it buttery smooth!
Perhaps there should be less calls to _SG_GL_CHECK_ERROR when SOKOL_DEBUG is off? Or a faster alternative?
August 31, 2025 at 10:14 AM
All good!
By running with the chrome profiler, I noticed there was a lot of time spend in _glGetError. I tried defining _SG_GL_CHECK_ERROR to nothing, and that made it buttery smooth!
Perhaps there should be less calls to _SG_GL_CHECK_ERROR when SOKOL_DEBUG is off? Or a faster alternative?
By running with the chrome profiler, I noticed there was a lot of time spend in _glGetError. I tried defining _SG_GL_CHECK_ERROR to nothing, and that made it buttery smooth!
Perhaps there should be less calls to _SG_GL_CHECK_ERROR when SOKOL_DEBUG is off? Or a faster alternative?
hey @flohofwoe.bsky.social, I'm investigating poor perf on the web for my game that uses sokol_gfx.h, and it seems a lot of time is spent in sg_apply_bindings.
Digging deeper, but perhaps you have pointers for me?
Digging deeper, but perhaps you have pointers for me?
August 31, 2025 at 10:02 AM
hey @flohofwoe.bsky.social, I'm investigating poor perf on the web for my game that uses sokol_gfx.h, and it seems a lot of time is spent in sg_apply_bindings.
Digging deeper, but perhaps you have pointers for me?
Digging deeper, but perhaps you have pointers for me?
Going for "grab" as a synonym of draw for now. Actually not too bad!
As long as there's no actually grabbing in the game I should be good!
As long as there's no actually grabbing in the game I should be good!
August 15, 2025 at 2:04 PM
Going for "grab" as a synonym of draw for now. Actually not too bad!
As long as there's no actually grabbing in the game I should be good!
As long as there's no actually grabbing in the game I should be good!
Hey card game programmers, I have a dumb naming question:
How do you differentiate between a function that draws a card _from a deck_ and one that draw a card _on the screen_?
Is my best naming option really "draw_monster_from_deck"?
How do you differentiate between a function that draws a card _from a deck_ and one that draw a card _on the screen_?
Is my best naming option really "draw_monster_from_deck"?
August 15, 2025 at 1:48 PM
Hey card game programmers, I have a dumb naming question:
How do you differentiate between a function that draws a card _from a deck_ and one that draw a card _on the screen_?
Is my best naming option really "draw_monster_from_deck"?
How do you differentiate between a function that draws a card _from a deck_ and one that draw a card _on the screen_?
Is my best naming option really "draw_monster_from_deck"?
Engine dev: added a command palette with some sort of autocomplete.
Here the "load" command suggests filenames to load, and the "save" command suggests filenames to override.
I intend the command palette to be pretty flexible and customizable, and ultimately replace the traditional in-game console
Here the "load" command suggests filenames to load, and the "save" command suggests filenames to override.
I intend the command palette to be pretty flexible and customizable, and ultimately replace the traditional in-game console
July 17, 2025 at 1:36 PM
Engine dev: added a command palette with some sort of autocomplete.
Here the "load" command suggests filenames to load, and the "save" command suggests filenames to override.
I intend the command palette to be pretty flexible and customizable, and ultimately replace the traditional in-game console
Here the "load" command suggests filenames to load, and the "save" command suggests filenames to override.
I intend the command palette to be pretty flexible and customizable, and ultimately replace the traditional in-game console
Finally managed to implement volumetric fog!
Done with sokol_gfx.h, which recently got compute shader support. Thanks @flohofwoe.bsky.social!
Done with sokol_gfx.h, which recently got compute shader support. Thanks @flohofwoe.bsky.social!
June 26, 2025 at 2:42 PM
Finally managed to implement volumetric fog!
Done with sokol_gfx.h, which recently got compute shader support. Thanks @flohofwoe.bsky.social!
Done with sokol_gfx.h, which recently got compute shader support. Thanks @flohofwoe.bsky.social!
I love stumbling on comments my past self wrote while pondering api design decision!
Sometimes I append an update to the comment, leaving the original comment so it's possible to understand the reasoning that led to a particular decision
Sometimes I append an update to the comment, leaving the original comment so it's possible to understand the reasoning that led to a particular decision
June 16, 2025 at 4:15 PM
I love stumbling on comments my past self wrote while pondering api design decision!
Sometimes I append an update to the comment, leaving the original comment so it's possible to understand the reasoning that led to a particular decision
Sometimes I append an update to the comment, leaving the original comment so it's possible to understand the reasoning that led to a particular decision
alright, I think this is pretty cool.
April 22, 2025 at 5:44 PM
alright, I think this is pretty cool.
1 min 24s in C. I need to improve these typing skills!
April 21, 2025 at 7:41 AM
1 min 24s in C. I need to improve these typing skills!
Made a lil tool to quickly place walls.
Ignore the trees, I was to lazy to disable them being placed on mouse down
Ignore the trees, I was to lazy to disable them being placed on mouse down
March 27, 2025 at 4:16 PM
Made a lil tool to quickly place walls.
Ignore the trees, I was to lazy to disable them being placed on mouse down
Ignore the trees, I was to lazy to disable them being placed on mouse down
Continuing the discussion and engine tryout with Eike, live on youtube in a few minutes youtube.com/live/oCFVXJc...
February 28, 2025 at 9:13 AM
Continuing the discussion and engine tryout with Eike, live on youtube in a few minutes youtube.com/live/oCFVXJc...