markus/4k_synthwave
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direct sound ja parempi syncca

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This commit is contained in:
Petri Järvisalo
2025-06-24 17:26:50 +03:00
parent 134a85111e
commit cfd6c97f32
7 changed files with 90 additions and 76 deletions
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62
src/definitions.h
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@ -7,7 +7,10 @@
#define VC_LEANMEAN
#define VC_EXTRALEAN
#pragma pack(push, 8)
#include <windows.h>
#pragma pack(pop)
#include <GL/gl.h>
// global resolution
@ -46,43 +49,44 @@ static DEVMODE screenSettings = {
};
#if USE_AUDIO
#include <mmsystem.h>
#include <mmreg.h>
// this file is auto generated by sointu
#include "sointu/song.h"
#ifndef DSBCAPS_TRUEPLAYPOSITION // Not defined in MinGW dsound headers, so let's add it
#define DSBCAPS_TRUEPLAYPOSITION 0x00080000
#endif
#include <mmreg.h>
#include <dsound.h>
SUsample sound_buffer[SU_LENGTH_IN_SAMPLES * SU_CHANNEL_COUNT];
WAVEFORMATEX wave_format = {
#ifdef SU_SAMPLE_FLOAT
WAVE_FORMAT_IEEE_FLOAT,
#else
WAVE_FORMAT_PCM,
#endif
SU_CHANNEL_COUNT,
SU_SAMPLE_RATE,
SU_SAMPLE_RATE * SU_SAMPLE_SIZE * SU_CHANNEL_COUNT,
SU_SAMPLE_SIZE * SU_CHANNEL_COUNT,
SU_SAMPLE_SIZE * 8,
0
};
#pragma data_seg(".descfmt")
DSBUFFERDESC buffer_description = {
sizeof(DSBUFFERDESC),
DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_GLOBALFOCUS | DSBCAPS_TRUEPLAYPOSITION,
SU_LENGTH_IN_SAMPLES * SU_SAMPLE_SIZE * SU_CHANNEL_COUNT,
0,
&wave_format,
0
};
#pragma bss_seg(".syncbuf")
extern "C" {
int _fltused = 1;
float syncBuf[SU_SYNCBUFFER_LENGTH+1];
}
#pragma data_seg(".sointuout")
static SUsample lpSoundBuffer[(int)SU_LENGTH_IN_SAMPLES * 2];
static HWAVEOUT hWaveOut;
#pragma data_seg(".wavefmt")
static WAVEFORMATEX WaveFMT =
{
WAVE_FORMAT_IEEE_FLOAT,
2, // channels
SU_SAMPLE_RATE, // samples per sec
SU_SAMPLE_RATE*sizeof(SUsample) * 2, // bytes per sec
sizeof(SUsample) * 2, // block alignment;
sizeof(SUsample) * 8, // bits per sample
0 // extension not needed
};
#pragma data_seg(".wavehdr")
static WAVEHDR WaveHDR =
{
(LPSTR)lpSoundBuffer, SU_LENGTH_IN_SAMPLES * sizeof(SUsample) * 2, 0, 0, 0, 0, 0, 0
};
static MMTIME MMTime =
{
TIME_SAMPLES, 0
};
#endif
// currently unused definitions

38
src/main.cpp
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@ -41,7 +41,7 @@ static int pidPost;
void entrypoint(void)
#else
#include "editor.h"
#include "song.h"
int __cdecl main(int argc, char* argv[])
#endif
{
@ -49,7 +49,8 @@ int __cdecl main(int argc, char* argv[])
#if FULLSCREEN
ChangeDisplaySettings(&screenSettings, CDS_FULLSCREEN);
ShowCursor(0);
const HDC hDC = GetDC(CreateWindow((LPCSTR)0xC018, 0, WS_POPUP | WS_VISIBLE | WS_MAXIMIZE, 0, 0, 0, 0, 0, 0, 0, 0));
HWND window = CreateWindow((LPCSTR)0xC018, 0, WS_POPUP | WS_VISIBLE | WS_MAXIMIZE, 0, 0, 0, 0, 0, 0, 0, 0);
const HDC hDC = GetDC(window);
#else
#ifdef EDITOR_CONTROLS
HWND window = CreateWindow("static", 0, WS_POPUP | WS_VISIBLE, 0, 0, XRES, YRES, 0, 0, 0, 0);
@ -77,12 +78,21 @@ int __cdecl main(int argc, char* argv[])
// initialize sound
#ifndef EDITOR_CONTROLS
#if USE_AUDIO
CreateThread(0, 0, (LPTHREAD_START_ROUTINE)su_render_song, lpSoundBuffer, 0, 0);
waveOutOpen(&hWaveOut, WAVE_MAPPER, &WaveFMT, NULL, 0, CALLBACK_NULL);
waveOutPrepareHeader(hWaveOut, &WaveHDR, sizeof(WaveHDR));
waveOutWrite(hWaveOut, &WaveHDR, sizeof(WaveHDR));
LPDIRECTSOUND direct_sound;
LPDIRECTSOUNDBUFFER direct_sound_buffer;
DirectSoundCreate(0, &direct_sound, 0);
IDirectSound_SetCooperativeLevel(direct_sound, window, DSSCL_PRIORITY);
IDirectSound_CreateSoundBuffer(direct_sound, &buffer_description, &direct_sound_buffer, NULL);
LPVOID p1;
DWORD l1;
IDirectSoundBuffer_Lock(direct_sound_buffer, 0, SU_LENGTH_IN_SAMPLES * SU_CHANNEL_COUNT * SU_SAMPLE_SIZE, &p1, &l1, NULL, NULL, 0);
CreateThread(0, 0, (LPTHREAD_START_ROUTINE)su_render_song, p1, 0, 0);
#endif
#else
Leviathan::Editor editor = Leviathan::Editor();
editor.updateShaders(&pidMain, &pidPost, true);
@ -94,9 +104,13 @@ int __cdecl main(int argc, char* argv[])
double position = 0.0;
#endif
long playCursor = 0;
// main loop
direct_sound_buffer->Play(0, 0, 0);
do
{
direct_sound_buffer->GetCurrentPosition((DWORD*)&playCursor, NULL);
float syncs[1 + SU_NUMSYNCS];
@ -117,7 +131,7 @@ int __cdecl main(int argc, char* argv[])
#ifndef EDITOR_CONTROLS
// if you don't have an audio system figure some other way to pass time to your shader
#if USE_AUDIO
waveOutGetPosition(hWaveOut, &MMTime, sizeof(MMTIME));
// it is possible to upload your vars as vertex color attribute (gl_Color) to save one function import
#if NO_UNIFORMS
glColor3ui(MMTime.u.sample, 0, 0);
@ -132,13 +146,11 @@ int __cdecl main(int argc, char* argv[])
#endif
syncs[0] = MMTime.u.sample / (2 * sizeof(SUsample));
syncs[0] = (float)playCursor / (2 * sizeof(SUsample));
for (int i = 0; i < SU_NUMSYNCS; ++i)
{
syncs[i + 1] = syncBuf[
(MMTime.u.sample >> 8) * SU_NUMSYNCS + i
];
syncs[i + 1] = syncBuf[(playCursor / (2 * sizeof(SUsample)) >> 8) * SU_NUMSYNCS + i];
}
PFNGLUNIFORM1FVPROC glUniform1fvProc = ((PFNGLUNIFORM1FVPROC)wglGetProcAddress("glUniform1fv"));
@ -178,7 +190,7 @@ int __cdecl main(int argc, char* argv[])
} while(!GetAsyncKeyState(VK_ESCAPE)
#if USE_AUDIO
&& MMTime.u.sample < SU_LENGTH_IN_SAMPLES
&& playCursor < SU_LENGTH_IN_SAMPLES * 2 * sizeof(SUsample)
#endif
);

20
src/shaders/fragment.frag
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@ -3,29 +3,25 @@ precision mediump float;
out vec4 o;
const float PI = 22./7.;
layout(location = 0) uniform float syncs[7];
float u_time = syncs[0]/44100.;
float u_time = syncs[0];
vec3 render(vec2 uv, float time) {
if (uv.y >= 0.0 && uv.y <= 0.01 ) {
return vec3(abs(syncs[5]));
float pos = syncs[4];
if (uv.x >= pos && uv.x <= pos+0.01 ) {
return vec3(1.);
}
if (uv.y >= -0.21 && uv.y <= -0.2 ) {
return vec3(abs(syncs[6]*1.3));
if (uv.x >= 0.0 && uv.x <= 0.01 ) {
return vec3(abs(syncs[3]*2));
}
return vec3(0.1, 0.2, 0.3);
return vec3(0.1, 0.2, 0.3) * abs(syncs[1]*1.2);
}
void main() {
vec2 u_resolution = vec2(1920,1080);
vec2 qor = gl_FragCoord.xy/u_resolution.xy;
vec2 uv = -1.0+2.0*qor;
uv.x *= uv.x/u_resolution.y;
vec2 uv = gl_FragCoord.xy * 2. / vec2(1920,1080);
vec3 col = render(uv, u_time);
o = vec4(col,1.0);
}

22
src/shaders/fragment.inl
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@ -10,18 +10,20 @@ const char *fragment_frag =
"out vec4 f;"
"const float m=22./7.;"
"layout(location=0)uniform float v[7];"
"float n=v[0]/441e2;"
"float n=v[0];"
"vec3 s(vec2 f)"
"{"
"float m=v[4];"
"return f.x>=m&&f.x<=m+.01?"
"vec3(1):"
"f.x>=0.&&f.x<=.01?"
"vec3(abs(v[3]*2)):"
"vec3(.1,.2,.3)*abs(v[1]*1.2);"
"}"
"void main()"
"{"
"vec2 m=vec2(1920,1080),n=gl_FragCoord.xy/m.xy;"
"n=-1.+2.*n;"
"n.x*=n.x/m.y;"
"vec3 a=n.y>=0.&&n.y<=.01?"
"vec3(abs(v[5])):"
"n.y>=-.21&&n.y<=-.2?"
"vec3(abs(v[6]*1.3)):"
"vec3(.1,.2,.3);"
"f=vec4(a,1);"
"vec2 m=gl_FragCoord.xy*2./vec2(1920,1080);"
"f=vec4(s(m),1);"
"}";
#endif // FRAGMENT_INL_

2
src/sointu/song.h
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@ -13,7 +13,7 @@
#define SU_LENGTH_IN_PATTERNS 108
#define SU_LENGTH_IN_ROWS (SU_LENGTH_IN_PATTERNS*SU_PATTERN_SIZE)
#define SU_SAMPLES_PER_ROW (SU_SAMPLE_RATE*60/(SU_BPM*SU_ROWS_PER_BEAT))
#define SU_NUMSYNCS 6
#define SU_NUMSYNCS 4
#define SU_SYNCBUFFER_LENGTH ((SU_LENGTH_IN_SAMPLES+255)>>8)*SU_NUMSYNCS
#include <stdint.h>