Lucas stillwwater

stillwwater / fgd.c

Last active November 6, 2025 05:45

Valve FGD Parser

stillwwater / dsp.c

Last active November 27, 2025 04:27

IR convolution (for reverbs)

	#define dsp_rfft_size(fftsize) ((fftsize) / 2 + 8)
	#define dsp_overlap_size(fftsize) ((fftsize) / 2)
	#define dsp_complex_array_count(fftsize) ((fftsize) * 2)

	enum {
	FFT_MIN_SIZE = 16,
	FFT_MAX_SIZE = 4096,
	};

	struct fir_filter {

stillwwater / wasapi_audio.c

Last active September 28, 2025 04:22

WASAPI playback sample

	#include "module.h"

	#define COBJMACROS
	#include <windows.h>
	#include <mmdeviceapi.h>
	#include <audioclient.h>

	struct audio_buffer audio_buffer;
	struct audio_device audio_device;

stillwwater / array.c

Created February 21, 2025 18:26

	#include "array.h"

	// arenasize:
	// virtual address size of the backing arenai
	void *
	make_array(usize arenasize, usize elementsize, char *name)
	{
	struct arena *arena = make_arena(arenasize, name);

	struct array_header array = arena_alloc_align(arena, 16, sizeof array);

stillwwater / rasterizer.asm

Last active November 11, 2024 19:28

Simple rasterizer

stillwwater / vid_win32.c

Created October 24, 2024 04:33

OpenGL on DXGI swapchain

	#define COBJMACROS
	#include <windows.h>
	#include <d3d11.h>
	#include <dxgi1_3.h>

	cvar_t vid_dxgi = {"vid_dxgi", 0, CVAR_BOOL \| CVAR_ALLOW \| CVAR_INIT}; // DXGI layer for OpenGL
	cvar_t vid_waitsync = {"vid_waitsync", 0, CVAR_BOOL \| CVAR_ALLOW}; // lower latency, lower framerate
	cvar_t vid_display = {"vid_display", -1, CVAR_INT \| CVAR_ALLOW}; // -1 = primary
	cvar_t vid_fullscreen = {"vid_fullscreen", 1, CVAR_BOOL \| CVAR_ALLOW};

stillwwater / arena.c

Created September 1, 2024 04:10

	struct arena {
	usize commitsize;
	char *name;
	char *start; // start of reserved address space
	char *end; // end of reserved address space
	char *heap; // start of user block
	char *allocated; // end of allocated block
	char *commited; // end of commited block
	};

stillwwater / gl_init.cpp

Created November 17, 2023 04:44

Create a modern OpenGL context on Windows

	// Initializes an OpenGL device context for a given window.
	void
	gl_create_context(HWND hwnd)
	{
	HDC hdc;
	HGLRC hglrc;
	int pfd_index;

	PIXELFORMATDESCRIPTOR pfd, device_pfd;

stillwwater / gjk.c

Last active September 2, 2023 22:27

	#include "core/vector.h"
	#include "core/math.h"
	#include "physics/clip.h"

	struct phys_world {
	unsigned static_clips_count;
	struct aabb static_clips[PHYS_MAX_CLIP];
	};

	static struct phys_world phys;

stillwwater / edwin.lua

Last active November 7, 2022 05:22