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tool.cc
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tool.cc
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#include "music/4klang.h"
#include "atto/app.h"
#define ATTO_GL_H_IMPLEMENT
//#define ATTO_GL_DEBUG
#include "atto/gl.h"
#include "atto/math.h"
#include <utility>
#include <memory>
#include <string>
#include <vector>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <cstring>
class FileChangePoller {
const std::string filename_;
timespec mtime_;
public:
FileChangePoller(const char *filename) : filename_(filename) {
mtime_.tv_sec = 0;
mtime_.tv_nsec = 0;
}
~FileChangePoller() {}
std::string poll() {
std::string content;
struct stat st;
stat(filename_.c_str(), &st);
if (st.st_mtim.tv_sec == mtime_.tv_sec &&
st.st_mtim.tv_nsec == mtime_.tv_nsec)
return content;
mtime_ = st.st_mtim;
int fd = open(filename_.c_str(), O_RDONLY);
if (fd < 0) {
aAppDebugPrintf("Cannot open file %s", filename_.c_str());
return content;
}
content.resize(st.st_size + 1, 0);
if (read(fd, &content[0], st.st_size) != st.st_size) {
aAppDebugPrintf("Cannot read file\n");
content.resize(0);
return content;
}
aAppDebugPrintf("Reread file %s", filename_.c_str());
close(fd);
return content;
}
};
class String {
protected:
std::string value_;
public:
String(const std::string &str) : value_(str) {}
const std::string &string() const { return value_; }
virtual bool update() { return false; }
};
class FileString : public String {
FileChangePoller poller_;
public:
FileString(const char *filename) : String(""), poller_(filename) {}
bool update() {
std::string new_content = poller_.poll();
if (!new_content.empty()) {
value_ = std::move(new_content);
return true;
}
return false;
}
};
class Program {
String &vertex_src_;
String &fragment_src_;
AGLProgram program_;
public:
const AGLProgram& program() const { return program_; }
Program(String &vtx, String &frg) : vertex_src_(vtx), fragment_src_(frg), program_(0) {}
bool update() {
if (vertex_src_.update() || fragment_src_.update()) {
AGLProgram new_program = aGLProgramCreateSimple(
vertex_src_.string().c_str(), fragment_src_.string().c_str());
if (new_program < 0) {
aAppDebugPrintf("shader error: %s\n", a_gl_error);
return false;
}
if (program_ > 0)
aGLProgramDestroy(program_);
program_ = new_program;
return true;
}
return false;
}
};
class Timeline {
String &source_;
int columns_, rows_;
std::vector<float> data_;
bool parse(const char *str) {
const char *p = str;
int columns, pattern_size, icol = 0, irow = 0;
#define SSCAN(expect, format, ...) { \
int n;\
if (expect != sscanf(p, format " %n", __VA_ARGS__, &n)) { \
aAppDebugPrintf("parsing error at %d (row=%d, col=%d)", \
p - str, irow, icol); \
return false; \
} \
p += n; \
}
SSCAN(2, "%d %d", &columns, &pattern_size);
std::vector<float> data;
float lasttime = 0;
while (*p != '\0') {
int pat, tick, tick2;
++irow;
SSCAN(3, "%d:%d.%d", &pat, &tick, &tick2);
const float time = ((pat * pattern_size + tick) * 2 + tick2)
* (float)(SAMPLES_PER_TICK) / (float)(SAMPLE_RATE) / 2.f;
data.push_back(time - lasttime);
aAppDebugPrintf("row=%d time=(%dx%d:%d+%d)%f, dt=%f",
irow, pat, pattern_size, tick, tick2, time, data.back());
lasttime = time;
for (int i = 0; i < columns; ++i) {
float value;
icol = i;
SSCAN(1, "%f", &value);
data.push_back(value);
}
}
#undef SSCAN
rows_ = irow - 1;
columns_ = columns;
data_ = std::move(data);
return true;
}
public:
Timeline(String &source) : source_(source), columns_(0), rows_(0) {}
bool update() {
return source_.update() && parse(source_.string().c_str());
}
struct Sample {
float operator[](int index) const {
if (index < 0 || index >= data_.size()) {
//aAppDebugPrintf("index %d is out of bounds [%d, %d]",
// index, 0, static_cast<int>(data_.size()) - 1);
return 0;
}
return data_[index];
}
std::vector<float> data_;
};
Sample sample(float time) {
int i, j;
for (i = 1; i < rows_ - 1; ++i) {
const float dt = data_.at(i * (columns_ + 1));
//printf("%.2f: [i=%d; dt=%.2f, t=%.2f]\n", time, i, dt, time/dt);
if (dt >= time) {
time /= dt;
break;
}
time -= dt;
}
Sample ret;
ret.data_.resize(columns_);
for (j = 0; j < columns_; ++j) {
const float a = data_.at((i - 1) * (columns_ + 1) + j + 1);
const float b = data_.at(i * (columns_ + 1) + j + 1);
ret.data_[j] = a + (b - a) * time;
//printf("%.2f ", ret.data_[j]);
}
//printf("\n");
return ret;
}
};
const char fs_vtx_source[] =
"void main() {\n"
"gl_Position = gl_Vertex;\n"
"}"
;
class Intro {
int paused_;
const ATimeUs time_end_;
bool time_adjusted_;
ATimeUs time_, last_frame_time_;
ATimeUs loop_a_, loop_b_;
AVec3f cam_, at_;
AVec3f mouse;
int frame_width, frame_height;
String fs_vtx;
FileString raymarch_src;
Program raymarch_prg;
FileString post_src;
Program post_prg;
FileString out_src;
Program out_prg;
FileString timeline_src_;
Timeline timeline_;
enum {
FbTex_None,
FbTex_Random,
FbTex_Ray,
FbTex_Frame,
FbTex_COUNT
};
GLuint tex_[FbTex_COUNT];
GLuint fb_[FbTex_COUNT];
static void createTexture(GLint t, int w, int h)
{
AGL__CALL(glBindTexture(GL_TEXTURE_2D, t));
AGL__CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, w, h, 0, GL_RGBA, GL_FLOAT, 0));
AGL__CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
AGL__CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
AGL__CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER));
AGL__CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER));
}
public:
Intro(int width, int height)
: paused_(0)
, time_end_(1000000.f * MAX_SAMPLES / (float)SAMPLE_RATE)
, time_(0)
, time_adjusted_(true)
, last_frame_time_(0)
, loop_a_(0)
, loop_b_(time_end_)
, cam_(aVec3f(40.f, 1.5f, 0.f))
, at_(aVec3ff(0.f))
, mouse(aVec3ff(0))
, frame_width(width)
, frame_height(height)
, fs_vtx(fs_vtx_source)
, raymarch_src("raymarch.glsl")
, raymarch_prg(fs_vtx, raymarch_src)
, post_src("post.glsl")
, post_prg(fs_vtx, post_src)
, out_src("out.glsl")
, out_prg(fs_vtx, out_src)
, timeline_src_("timeline.seq")
, timeline_(timeline_src_)
{
tex_[0] = fb_[0] = 0;
AGL__CALL(glGenTextures(FbTex_COUNT-1, tex_ + 1));
AGL__CALL(glGenFramebuffers(FbTex_COUNT-1, fb_ + 1));
for (int i = 0; i < FbTex_COUNT; ++i)
aAppDebugPrintf("tex_[%d] = %u; fb_[%d] = %u;", i, tex_[i], i, fb_[i]);
createTexture(tex_[FbTex_Ray], frame_width, frame_height);
AGL__CALL(glBindFramebuffer(GL_FRAMEBUFFER, fb_[FbTex_Ray]));
AGL__CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex_[FbTex_Ray], 0));
int status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
ATTO_ASSERT(status == GL_FRAMEBUFFER_COMPLETE);
createTexture(tex_[FbTex_Frame], frame_width, frame_height);
AGL__CALL(glBindFramebuffer(GL_FRAMEBUFFER, fb_[FbTex_Frame]));
AGL__CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex_[FbTex_Frame], 0));
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
ATTO_ASSERT(status == GL_FRAMEBUFFER_COMPLETE);
}
void drawPass(float now, const Timeline::Sample &TV, int tex, int prog, int fb) {
AGL__CALL(glBindTexture(GL_TEXTURE_2D, tex));
AGL__CALL(glUseProgram(prog));
AGL__CALL(glBindFramebuffer(GL_FRAMEBUFFER, fb));
if (fb > 0) {
AGL__CALL(glViewport(0, 0, frame_width, frame_height));
AGL__CALL(glUniform3f(glGetUniformLocation(prog, "V"), frame_width, frame_height, now));
} else {
AGL__CALL(glViewport(0, 0, a_app_state->width, a_app_state->height));
AGL__CALL(glUniform3f(glGetUniformLocation(prog, "V"), a_app_state->width, a_app_state->height, now));
}
AGL__CALL(glUniform1i(glGetUniformLocation(prog, "B"), 0));
AGL__CALL(glUniform3f(glGetUniformLocation(prog, "C"), TV[0], TV[1], TV[2]));
AGL__CALL(glUniform3f(glGetUniformLocation(prog, "A"), TV[3], TV[4], TV[5]));
AGL__CALL(glUniform3f(glGetUniformLocation(prog, "D"), TV[6], TV[7], TV[8]));
AGL__CALL(glUniform1f(glGetUniformLocation(prog, "TPCT"), (float)time_ / (float)time_end_));
AGL__CALL(glRects(-1,-1,1,1));
}
void paint(ATimeUs ts) {
if (!paused_) {
const ATimeUs delta = ts - last_frame_time_;
time_ += delta;
if (time_ < loop_a_) time_ = loop_a_;
if (time_ > loop_b_) time_ = loop_a_ + time_ % (loop_b_ - loop_a_);
}
last_frame_time_ = ts;
const float now = 1e-6f * time_;
cam_.x = 20.f + sinf(now*.1f) * 18.f;
bool need_redraw = !paused_ || time_adjusted_;
need_redraw |= raymarch_prg.update();
need_redraw |= post_prg.update();
need_redraw |= out_prg.update();
need_redraw |= timeline_.update();
const Timeline::Sample TV = timeline_.sample(now);
if (need_redraw) {
drawPass(now, TV, 0, raymarch_prg.program(), FbTex_Ray);
drawPass(now, TV, FbTex_Ray, post_prg.program(), FbTex_Frame);
}
drawPass(now, TV, FbTex_Frame, out_prg.program(), 0);
time_adjusted_ = false;
}
void adjustTime(int delta) {
if (delta < 0 && -delta > (int)(time_ - loop_a_))
time_ = loop_a_;
else
time_ += delta;
time_adjusted_ = true;
}
void key(ATimeUs ts, AKey key) {
(void)ts;
switch (key) {
case AK_Space: paused_ ^= 1; break;
case AK_Right: adjustTime(5000000); break;
case AK_Left: adjustTime(-5000000); break;
case AK_Esc: aAppTerminate(0);
default: break;
}
}
void pointer(int dx, int dy, unsigned buttons, unsigned btn_ch) {
if (buttons) {
mouse.x += dx;
mouse.y += dy;
}
if (btn_ch & AB_WheelUp) mouse.z += 1.f;
if (btn_ch & AB_WheelDown) mouse.z -= 1.f;
}
};
static std::unique_ptr<Intro> intro;
void paint(ATimeUs ts, float dt) {
(void)(dt);
intro->paint(ts);
}
void key(ATimeUs ts, AKey key, int down) {
(void)(ts);
if (down) intro->key(ts, key);
}
void pointer(ATimeUs ts, int dx, int dy, unsigned int buttons_changed_bits) {
(void)(ts);
(void)(dx);
(void)(dy);
(void)(buttons_changed_bits);
intro->pointer(dx, dy, a_app_state->pointer.buttons, buttons_changed_bits);
}
void attoAppInit(struct AAppProctable *ptbl) {
ptbl->key = key;
ptbl->pointer = pointer;
ptbl->paint = paint;
int width = 1280, height = 720;
for (int iarg = 1; iarg < a_app_state->argc; ++iarg) {
const char *argv = a_app_state->argv[iarg];
if (strcmp(argv, "-w") == 0)
width = atoi(a_app_state->argv[++iarg]);
else if (strcmp(argv, "-h") == 0)
height = atoi(a_app_state->argv[++iarg]);
}
intro.reset(new Intro(width, height));
}