--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/.hgignore Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,7 @@
+build/
+nbproject/private/
+temp/
+
+.kdev4
+
+data/.*\.(aux|log|nav|out|snm|toc)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Buffer.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,45 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <unistd.h>
+
+class Buffer {
+protected:
+ char* data;
+ size_t size;
+
+public:
+
+ Buffer() {
+ }
+
+ virtual ~Buffer() {
+ }
+
+ Buffer(const Buffer&) = delete;
+ Buffer& operator=(const Buffer&) = delete;
+
+ const char* getData() const {
+ return data;
+ }
+
+ const size_t getSize() const {
+ return size;
+ }
+};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/CLIParser.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,86 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <vector>
+#include <string>
+
+#include "Configuration.h"
+
+class CLIParser {
+private:
+
+ static const std::string OPTION_TEXTURE;
+ static const std::string OPTION_BACKGROUND_COLOR;
+ static const std::string OPTION_ROOT_WINDOW;
+
+ const std::string
+ readNext(const std::vector<std::string>& arguments, int& i) {
+ if (i < arguments.size()) return arguments[i++];
+ else throw std::logic_error("Missing CLI argument"
+ + (i > 0 ? (" after " + arguments[i - 1]) : ""));
+ }
+
+ bool parseBoolean(const std::string& value) {
+ if (value == "true") return true;
+ else if (value == "false") return false;
+ else throw std::logic_error("Unable to parse boolean value: "
+ + value + " (expecting true or false)");
+ }
+
+ unsigned long
+ parseHexColor(const std::string& hex) {
+ int r, g, b;
+ int count = sscanf(hex.c_str(), "%02x%02x%02x", &r, &g, &b);
+ if (count == 3) {
+ unsigned long lr, lg, lb;
+ lr = r;
+ lg = g;
+ lb = b;
+ return (lr << 16 | lg << 8 | lb);
+ } else {
+ throw std::logic_error("Invalid hex color string");
+ }
+ }
+
+public:
+
+ const Configuration parse(const std::vector<std::string>& arguments) {
+ Configuration c;
+
+ for (int i = 0; i < arguments.size();) {
+ const std::string& option = readNext(arguments, i);
+
+ if (option == OPTION_TEXTURE) {
+ Configuration::Texture tex;
+ tex.fileName = readNext(arguments, i);
+ c.textures.push_back(tex);
+ } else if (option == OPTION_BACKGROUND_COLOR) {
+ c.backgroundColor = parseHexColor(readNext(arguments, i));
+ } else if (option == OPTION_ROOT_WINDOW) {
+ c.rootWindow = std::stoul(readNext(arguments, i));
+ } else throw std::logic_error("Unsupported CLI option: " + option);
+ }
+
+ return c;
+ }
+};
+
+const std::string CLIParser::OPTION_TEXTURE = "--texture";
+const std::string CLIParser::OPTION_BACKGROUND_COLOR = "--background-color";
+const std::string CLIParser::OPTION_ROOT_WINDOW = "--root-window";
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Configuration.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,51 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <string>
+
+#include <X11/X.h>
+
+class Configuration {
+public:
+
+ class File {
+ public:
+ std::string fileName;
+ };
+
+ class Texture : public File {
+ };
+
+ class Shader : public File {
+ };
+
+ class VertexShader : public Shader {
+ };
+
+ class FragmentShader : public Shader {
+ };
+
+ // TODO: support loading whole directory and monitoring using inotify
+ std::vector<Texture> textures;
+ VertexShader vertexShader;
+ FragmentShader fragmentShader;
+
+ unsigned long backgroundColor = (0x33 << 16 | 0x33 << 8 | 0x33);
+ Window rootWindow = 0;
+};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/EPoll.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,116 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdexcept>
+#include <string>
+
+#include <signal.h>
+#include <sys/signalfd.h>
+#include <sys/epoll.h>
+#include <unistd.h>
+#include <sys/fcntl.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <stdexcept>
+#include <string>
+
+class EPoll {
+private:
+ int epollEventCount;
+ epoll_event* epollEvents;
+ int epollFD;
+
+ void static log(const std::string& message) {
+ std::cout << message << std::endl;
+ }
+public:
+
+ class Exception : public std::logic_error {
+ public:
+
+ Exception(const std::string& msg) : logic_error(msg) {
+ }
+
+ Exception(const std::string& msg, int errNo) :
+ logic_error(msg + strerror(errNo)) {
+ }
+
+ };
+
+ EPoll(int eventCount = 5) : epollEventCount(eventCount) {
+ epollEvents = (epoll_event*) malloc(sizeof (*epollEvents) * eventCount);
+ epollFD = epoll_create1(0);
+ log("EPoll(): epoll_create() = " + std::to_string(epollFD));
+ }
+
+ virtual ~EPoll() {
+ ::close(epollFD);
+ free(epollEvents);
+ }
+
+ EPoll(const EPoll&) = delete;
+ EPoll& operator=(const EPoll&) = delete;
+
+ static void processSignal(int signal) {
+ log("got signal: " + std::to_string(signal));
+ }
+
+ int addSignals() {
+ ::signal(SIGTERM, EPoll::processSignal);
+ ::signal(SIGINT, EPoll::processSignal);
+
+ sigset_t mask;
+ ::sigemptyset(&mask);
+ ::sigaddset(&mask, SIGTERM);
+ ::sigaddset(&mask, SIGINT);
+ int signalFD = ::signalfd(-1, &mask, 0);
+ add(signalFD, EPOLLIN | EPOLLET | EPOLLHUP);
+ log("signalFD=" + std::to_string(signalFD));
+ return signalFD;
+ }
+
+ void add(int fd, uint32_t events = EPOLL_EVENTS::EPOLLIN) {
+ struct epoll_event ev;
+ ev.data.fd = fd;
+ ev.events = events;
+ int err = epoll_ctl(epollFD, EPOLL_CTL_ADD, ev.data.fd, &ev);
+ if (err) throw Exception("EPoll::add() failed (a file?):", errno);
+ // Regular files can not be monitored this way, thus:
+ // cat Makefile | opengl-pdf # works
+ // opengl-pdf < Makefile # does not work
+ }
+
+ void del(int fd) {
+ int err = epoll_ctl(epollFD, EPOLL_CTL_DEL, fd, nullptr);
+ if (err) throw Exception("EPoll::del() failed: ", errno);
+ }
+
+ int wait(int timeout = 1000) {
+ int count = epoll_wait(epollFD, epollEvents, epollEventCount, timeout);
+ if (count >= 0) return count;
+ else throw Exception("EPoll::wait() failed: ", errno);
+ }
+
+ const epoll_event& operator[](std::size_t index) const {
+ if (index < epollEventCount) return epollEvents[index];
+ else throw std::out_of_range("invalid index of epollEvents");
+ }
+
+};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Logger.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,58 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <ostream>
+#include <string>
+
+#define LOG_LEVEL(XX) \
+ XX(OFF, 0, "OFF") \
+ XX(SEVERE, 1, "SEVERE") \
+ XX(WARNING, 2, "WARNING") \
+ XX(INFO, 3, "INFO") \
+ XX(CONFIG, 4, "CONFIG") \
+ XX(FINE, 5, "FINE") \
+ XX(FINER, 6, "FINER") \
+ XX(FINEST, 7, "FINEST") \
+ XX(ALL, 8, "ALL")
+
+enum class LogLevel {
+#define XX(a, b, c) a = (1 << b),
+ LOG_LEVEL(XX)
+#undef XX
+};
+
+static const char* LOG_LEVELS[] = {
+#define XX(a, b, c) [b] = c,
+ LOG_LEVEL(XX)
+#undef XX
+};
+
+#undef LOG_LEVEL
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+inline const char* getLogLevelName(LogLevel l) {
+ auto count = ARRAY_SIZE(LOG_LEVELS);
+ for (int i = 0; i < count; i++) if ((int) l == 1 << i) return LOG_LEVELS[i];
+ return nullptr;
+}
+
+inline void log(std::ostream& out, LogLevel level, std::string message) {
+ out << getLogLevelName(level) << ": " << message << std::endl;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Makefile Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,37 @@
+# ShaderShark
+# Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, version 3 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+all: build/shader-shark
+
+.PHONY: all clean run
+
+clean:
+ rm -rf build
+
+run: build/shader-shark build/jazz.rgba
+ $(<) --texture build/jazz.rgba
+
+build:
+ mkdir -p $(@)
+
+SRC=Shark.cpp shader-shark.cpp
+
+build/shader-shark: $(SRC) build *.h
+ $(CXX) -std=c++20 -g -o $(@) $(SRC) $$(pkg-config --cflags --libs \
+ epoxy x11 glu glm)
+
+build/jazz.rgba: textures/jazz.png
+ mkdir -p build
+ convert -format rgba $(<) $(@)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MappedFile.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,57 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <sys/mman.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "Buffer.h"
+
+class MappedFile : public Buffer {
+private:
+ int fd = -1;
+public:
+
+ MappedFile(const std::string& fileName) {
+ struct stat stat;
+ fd = open(fileName.c_str(), O_RDONLY);
+ if (fd < 0) throw std::invalid_argument("unable to open file");
+
+ int result = fstat(fd, &stat);
+ if (result) throw std::invalid_argument("unable to stat file");
+
+ size = stat.st_size;
+ data = static_cast<char*> (
+ mmap(nullptr, size, PROT_READ, MAP_SHARED, fd, 0));
+ if (data == MAP_FAILED) throw std::invalid_argument("unable to mmap");
+ // std::cerr << "MappedFile() / mmap()" << std::endl;
+ }
+
+ virtual ~MappedFile() {
+ int result = munmap(data, size);
+ // std::cerr << "~MappedFile() / munmap() = " << result << std::endl;
+ result = close(fd);
+ // std::cerr << "~MappedFile() / close() = " << result << std::endl;
+ }
+
+ MappedFile(const MappedFile&) = delete;
+ MappedFile& operator=(const MappedFile&) = delete;
+
+};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Shark.cpp Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,438 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Shark.h"
+
+Shark::Shark(const Configuration& configuration) :
+cfg(configuration) {
+}
+
+Shark::~Shark() {
+}
+
+void Shark::run() {
+ Display* dpy = XOpenDisplay(NULL);
+
+ if (dpy == NULL) throw std::logic_error("Unable to connect to X server");
+
+ GLint att[] = {GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None};
+ XVisualInfo* vi = glXChooseVisual(dpy, 0, att);
+ Window root = DefaultRootWindow(dpy);
+ Window parent = cfg.rootWindow ? cfg.rootWindow : root;
+
+ XSetWindowAttributes swa;
+ swa.colormap = XCreateColormap(dpy, parent, vi->visual, AllocNone);
+ swa.event_mask = ExposureMask | KeyPressMask | PointerMotionMask
+ | ButtonPressMask
+ | StructureNotifyMask;
+
+ bool full = false;
+ unsigned int width = 1600;
+ unsigned int height = 1200;
+ if (parent != root) {
+ XWindowAttributes parentAttr;
+ XGetWindowAttributes(dpy, parent, &parentAttr);
+ width = parentAttr.width;
+ height = parentAttr.height;
+ }
+
+ Window win = XCreateWindow(
+ dpy, parent, 0, 0, width, height, 0,
+ vi->depth, InputOutput, vi->visual,
+ CWColormap | CWEventMask, &swa);
+
+ XMapWindow(dpy, win);
+ XStoreName(dpy, win, "ShaderShark");
+ setX11PID(dpy, win);
+ // XSetWindowBackground(dpy, win, 0) vs. glClearColor()
+
+ GLXContext glc = glXCreateContext(dpy, vi, NULL, GL_TRUE);
+ glXMakeCurrent(dpy, win, glc);
+
+ // Load GLSL shaders:
+ GLuint shaderProgram = loadShaders();
+ loadVertices();
+ loadTextures(shaderProgram);
+
+ auto toggleFullscreen = [&]() {
+ full = setFullscreen(dpy, win, !full);
+ };
+
+ auto resetView = [&]() {
+ ctx = initialCtx;
+ ctx.updateCameraFrontAndUp();
+ };
+
+ // root can reize our window
+ // or we can listen to root resize and then resize our window ourselves
+ bool listenToRootResizes = true;
+ if (listenToRootResizes) XSelectInput(dpy, parent, StructureNotifyMask);
+
+ bool keepRunningX11 = true;
+ int x11fd = XConnectionNumber(dpy);
+ EPoll epoll;
+ epoll.add(x11fd);
+ try {
+ epoll.add(setNonBlocking(STDIN_FILENO));
+ } catch (const EPoll::Exception& e) {
+ logOutput << "Will not monitor events on STDIN: " << e.what() << "\n";
+ }
+
+ // rended the 3D scene even before the first event:
+ runShaders(shaderProgram);
+ glXSwapBuffers(dpy, win);
+
+ for (XEvent xev; keepRunningX11;) {
+ int epollEventCount = epoll.wait();
+ //std::cout << "trace: epoll.wait() = " << epollEventCount << std::endl;
+ for (int epollEvent = 0; epollEvent < epollEventCount; epollEvent++) {
+ if (epoll[epollEvent].data.fd == x11fd) {
+ if (!XPending(dpy)) {
+ // otherwise STDIN events are held until the first X11 event
+ logOutput << "trace: no pending X11 event" << std::endl;
+ break;
+ }
+ XWindowAttributes gwa;
+ XNextEvent(dpy, &xev);
+ bool redraw = false;
+
+ if (xev.type == Expose) {
+ std::cout << "XEvent: Expose" << std::endl;
+ XGetWindowAttributes(dpy, win, &gwa);
+ glViewport(0, 0, gwa.width, gwa.height);
+ redraw = true;
+ } else if (xev.type == KeyPress) {
+ DecodedKey key = decodeKeycode(dpy, xev.xkey.keycode);
+ std::cout << "XEvent: KeyPress:"
+ << " keycode=" << key.code
+ << " key=" << key.name
+ << std::endl;
+
+ const float cSp = 0.05f; // camera speed
+ const float aSp = 5.f; // angle speed
+
+ if (key.matches(XK_q, XK_Escape)) keepRunningX11 = false;
+ else if (key.matches(XK_Left, XK_s)) ctx.turnLeft(aSp);
+ else if (key.matches(XK_Right, XK_f)) ctx.turnRight(aSp);
+ else if (key.matches(XK_Up, XK_e)) ctx.moveForward(cSp);
+ else if (key.matches(XK_Down, XK_d)) ctx.moveBackward(cSp);
+ else if (key.matches(XK_w)) ctx.rollLeft(aSp);
+ else if (key.matches(XK_r)) ctx.rollRight(aSp);
+ else if (key.matches(XK_t)) ctx.turnUp(aSp);
+ else if (key.matches(XK_g)) ctx.turnDown(aSp);
+ else if (key.matches(XK_m)) ctx.moveLeft(cSp);
+ else if (key.matches(XK_comma)) ctx.moveRight(cSp);
+ else if (key.matches(XK_l)) ctx.moveUp(cSp);
+ else if (key.matches(XK_period)) ctx.moveDown(cSp);
+ else if (key.matches(XK_j)) ctx.moveLeft(cSp * 5);
+ else if (key.matches(XK_k)) ctx.moveRight(cSp * 5);
+ else if (key.matches(XK_u)) ctx.moveLeft(cSp * 10);
+ else if (key.matches(XK_i)) ctx.moveRight(cSp * 10);
+ else if (key.matches(XK_x)) resetView();
+ else if (key.matches(XK_F11, XK_y)) toggleFullscreen();
+ redraw = true;
+ } else if (xev.type == ButtonPress) {
+ std::cout << "XEvent: ButtonPress:"
+ << " button=" << xev.xbutton.button
+ << std::endl;
+ if (xev.xbutton.button == 1);
+ else if (xev.xbutton.button == 4) ctx.adjustFov(+1.0);
+ else if (xev.xbutton.button == 5) ctx.adjustFov(-1.0);
+ else if (xev.xbutton.button == 8) resetView();
+ else if (xev.xbutton.button == 9) keepRunningX11 = false;
+ redraw = true;
+ } else if (xev.type == MotionNotify) {
+ // printCursorInfo(xev.xmotion);
+ } else if (xev.type == ConfigureNotify) {
+ std::cout << "XEvent: ConfigureNotify:"
+ << " window=" << xev.xconfigure.window
+ << " height=" << xev.xconfigure.height
+ << " width=" << xev.xconfigure.width
+ << std::endl;
+ if (listenToRootResizes
+ && xev.xconfigure.window == parent) {
+ XResizeWindow(dpy, win,
+ xev.xconfigure.width, xev.xconfigure.height);
+ }
+ } else if (xev.type == UnmapNotify) {
+ std::cout << "XEvent: UnmapNotify" << std::endl;
+ } else if (xev.type == DestroyNotify) {
+ std::cout << "XEvent: DestroyNotify → finish" << std::endl;
+ break;
+ } else {
+ std::cout << "XEvent: type=" << xev.type << std::endl;
+ }
+
+ if (redraw) {
+ runShaders(shaderProgram);
+ glXSwapBuffers(dpy, win);
+ }
+ } else if (epoll[epollEvent].data.fd == STDIN_FILENO) {
+ int epollFD = epoll[epollEvent].data.fd;
+ logOutput << "other event: fd=" << epollFD << " data=";
+ for (char ch; read(epollFD, &ch, 1) > 0;) {
+ std::stringstream msg;
+ msg
+ << std::hex
+ << std::setfill('0')
+ << std::setw(2)
+ << (int) ch;
+ logOutput << msg.str();
+ }
+ logOutput << std::endl;
+
+ } else {
+ logOutput
+ << "error: event on an unexpected FD: "
+ << epoll[epollEvent].data.fd
+ << std::endl;
+ }
+ }
+ }
+
+ XFree(vi);
+ // for (auto page : pdfTextures) glDeleteTextures(1, &page.texture);
+
+ glXMakeCurrent(dpy, None, NULL);
+ glXDestroyContext(dpy, glc);
+ XDestroyWindow(dpy, win);
+ XCloseDisplay(dpy);
+}
+
+void Shark::runShaders(GLuint program) {
+ std::cerr << "GLSL: runShaders(" << program << ")" << std::endl;
+ std::cerr << "background color: " << cfg.backgroundColor << std::endl;
+ glUseProgram(program);
+ checkError(&std::cerr);
+
+ glClearColor(
+ (cfg.backgroundColor >> 16 & 0xFF) / 256.,
+ (cfg.backgroundColor >> 8 & 0xFF) / 256.,
+ (cfg.backgroundColor & 0xFF) / 256.,
+ 1.0);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ GLint viewport[4];
+ glGetIntegerv(GL_VIEWPORT, viewport);
+ GLfloat width = viewport[2];
+ GLfloat height = viewport[3];
+
+ glm::mat4 projection = glm::perspective(
+ glm::radians(ctx.fov),
+ width / height,
+ 0.1f, 100.0f);
+ glUniformMatrix4fv(ProgAttr.projection, 1, GL_FALSE, &projection[0][0]);
+
+ glm::mat4 view = glm::lookAt(
+ ctx.cameraPos,
+ ctx.cameraPos + ctx.cameraFront,
+ ctx.cameraUp);
+ glUniformMatrix4fv(ProgAttr.view, 1, GL_FALSE, &view[0][0]);
+
+ // glBindVertexArray(vao);
+
+ glm::mat4 model = glm::mat4(1.0f); // identity matrix
+ // model = glm::translate(model, glm::vec3(0., 0., 0.));
+ // float angle = 20.0f;
+ // glm::vec3 xxx = glm::vec3(1.0f, 0.3f, 0.5f);
+ // model = glm::rotate(model, glm::radians(angle), xxx);
+ glUniformMatrix4fv(ProgAttr.model, 1, GL_FALSE, &model[0][0]);
+
+ glDrawArrays(GL_TRIANGLES, 0, 2 * 3); // viz loadVertices() kde plníme data
+ std::cerr << "GLSL: glDrawArrays()" << std::endl;
+}
+
+void Shark::log(LogLevel level, std::string message) {
+ ::log(logOutput, level, message);
+}
+
+int Shark::setNonBlocking(int fd) {
+ int flags = fcntl(fd, F_GETFL, 0);
+ fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+ return fd;
+}
+
+void Shark::loadVertices() {
+ const std::vector<GLfloat> vertices = {
+ // Vertex XYZ Texture XY
+ -0.80f * TEX.ratio, +0.80f, +0.0, /**/ 0.0, 0.0,
+ +0.80f * TEX.ratio, +0.80f, +0.0, /**/ 1.0, 0.0,
+ -0.80f * TEX.ratio, -0.80f, +0.0, /**/ 0.0, 1.0,
+
+ -0.80f * TEX.ratio, -0.80f, +0.0, /**/ 0.0, 1.0,
+ +0.80f * TEX.ratio, -0.80f, +0.0, /**/ 1.0, 1.0,
+ +0.80f * TEX.ratio, +0.80f, +0.0, /**/ 1.0, 0.0,
+
+ // viz glDrawArrays(), kde vybereme počátek a počet hodnot
+ };
+
+ // Vertex data:
+ glVertexAttribPointer(ProgAttr.vertexXYZ, 3, // vertex items
+ GL_FLOAT, GL_FALSE, 5 * sizeof (float),
+ (void*) 0);
+ glEnableVertexAttribArray(ProgAttr.vertexXYZ);
+
+ // Texture positions:
+ glVertexAttribPointer(ProgAttr.textureXY, 2, // texture items
+ GL_FLOAT, GL_FALSE, 5 * sizeof (float),
+ (void*) (3 * sizeof (float)));
+ glEnableVertexAttribArray(ProgAttr.textureXY);
+
+ glBufferData(GL_ARRAY_BUFFER,
+ vertices.size() * sizeof (vertices[0]),
+ vertices.data(),
+ GL_STATIC_DRAW);
+ // GL_STATIC_DRAW:
+ // The vertex data will be uploaded once
+ // and drawn many times(e.g. the world).
+ // GL_DYNAMIC_DRAW:
+ // The vertex data will be created once, changed from
+ // time to time, but drawn many times more than that.
+ // GL_STREAM_DRAW:
+ // The vertex data will be uploaded once and drawn once.
+
+ // see also glBindBuffer(GL_ARRAY_BUFFER, vbo); where we set current VBO
+}
+
+GLuint Shark::loadTexture(const std::string& fileName, int width, int height) {
+ MappedFile file(fileName);
+ if (file.getSize() == width * height * 4) {
+ GLuint textureID;
+ glGenTextures(1, &textureID);
+ glBindTexture(GL_TEXTURE_2D, textureID);
+ auto GLT2D = GL_TEXTURE_2D;
+ glTexImage2D(GLT2D, 0, GL_RGBA,
+ width, height,
+ 0, GL_RGBA, GL_UNSIGNED_BYTE,
+ file.getData());
+ glTexParameteri(GLT2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameteri(GLT2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ glTexParameteri(GLT2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GLT2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+ glGenerateMipmap(GLT2D);
+ std::cerr << "loadTexture(\"" << fileName.c_str() << "\", "
+ << width << ", " << height << ") = " << textureID << std::endl;
+ checkError(&std::cerr);
+ return textureID;
+ } else {
+ throw std::invalid_argument("wrong texture file size");
+ }
+}
+
+void Shark::loadTextures(GLuint shaderProgram) {
+ for (const Configuration::Texture& tex : cfg.textures) {
+ GLuint jazz = loadTexture(tex.fileName, TEX.width, TEX.height);
+ // FIXME: decode PNG, JPEG etc. formats
+ // FIXME: read width and height from the file
+ // TODO: review texture loading and binding
+ // works even without this - default texture
+ // glUniform1i(ProgAttr.jazz, jazz);
+ // checkError(&std::cerr);
+ }
+}
+
+GLuint Shark::loadShaders() {
+ try {
+ // Vertex Array Object (VAO)
+ GLuint vao;
+ glGenVertexArrays(1, &vao);
+ glBindVertexArray(vao);
+ // VAO - something like context for bound data/variables
+ // We can switch multiple VAOs. VAO can contain multiple VBOs.
+ // See also https://stackoverflow.com/questions/11821336/
+ // what-are-vertex-array-objects
+
+ // Vertex Buffer Object (VBO):
+ GLuint vbo;
+ glGenBuffers(1, &vbo);
+ glBindBuffer(GL_ARRAY_BUFFER, vbo);
+
+ std::vector<std::string> fileNames = {
+ "shaders/first.vert",
+ "shaders/first.frag",
+ };
+
+ std::vector<GLuint> shaders;
+
+ GLuint program = glCreateProgram();
+
+ // glBindFragDataLocation(program, 0, "outColor");
+ // glBindAttribLocation(program, LOC.input, "vertices");
+
+ for (const std::string& fileName : fileNames) {
+ MappedFile file(fileName);
+ GLuint shader = glCreateShader(toShaderType(fileName));
+ auto fileData = file.getData();
+ GLint fileSize = file.getSize();
+ glShaderSource(shader, 1, &fileData, &fileSize);
+ glCompileShader(shader);
+
+ GLint compileStatus;
+ glGetShaderiv(shader, GL_COMPILE_STATUS, &compileStatus);
+ std::cerr << "GLSL shader compile status: "
+ << compileStatus
+ << (compileStatus == GL_TRUE ? " = OK" : " = ERROR")
+ << std::endl;
+
+ if (compileStatus != GL_TRUE) {
+ char error[512];
+ glGetShaderInfoLog(shader, sizeof (error), NULL, error);
+ std::cerr << "GLSL shader error: " << error;
+ throw std::logic_error("GLSL: shader failed to compile");
+ }
+
+ glAttachShader(program, shader);
+ shaders.push_back(shader);
+ std::cerr << "GLSL loaded: " << fileName.c_str() << std::endl;
+ }
+
+ // GLSL compiler does very efficient / aggressive optimization.
+ // Attributes and uniforms that are not used in the shader are deleted.
+ // And even if we e.g. read color from a texture and overwrite it,
+ // the variable is still deleted and considered „inactive“.
+ // Functions glGetAttribLocation() and glGetUniformLocation() return -1.
+
+ glLinkProgram(program);
+
+ ProgAttr.vertexXYZ = glGetAttribLocation(program, "vertices");
+ ProgAttr.textureXY = glGetAttribLocation(program, "textureCoordinates");
+ ProgAttr.model = glGetUniformLocation(program, "model");
+ ProgAttr.view = glGetUniformLocation(program, "view");
+ ProgAttr.projection = glGetUniformLocation(program, "projection");
+ ProgAttr.jazz = glGetUniformLocation(program, "jazz");
+ ProgAttr.color = glGetFragDataLocation(program, "outColor");
+ glBindFragDataLocation(program, ProgAttr.color, "outColor");
+ // listVariables(program);
+ GLint linkStatus;
+ glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
+ if (linkStatus != GL_TRUE) {
+ char error[512];
+ glGetProgramInfoLog(program, sizeof (error), NULL, error);
+ std::cerr << "GLSL program error: " << error;
+ throw std::logic_error("GLSL: program failed to link");
+ }
+ std::cerr << "GLSL shader count: " << shaders.size() << std::endl;
+
+ return program;
+ } catch (const std::exception& e) {
+ std::cerr << "Error while loading shaders: " << e.what() << std::endl;
+ } catch (...) {
+ std::cerr << "Error while loading shaders: unknown" << std::endl;
+ }
+ throw std::logic_error("GLSL: loadShaders() failed");
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Shark.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,182 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <iostream>
+#include <iomanip>
+#include <string>
+#include <memory>
+#include <functional>
+#include <sstream>
+#include <vector>
+#include <chrono>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "Configuration.h"
+#include "x11.h"
+#include "opengl.h"
+#include "EPoll.h"
+#include "Logger.h"
+#include "MappedFile.h"
+
+class Shark {
+private:
+
+ struct {
+ GLint vertexXYZ = -2;
+ GLint textureXY = -2;
+
+ GLint color = -2;
+
+ GLint model = -2;
+ GLint view = -2;
+ GLint projection = -2;
+ GLint jazz = -2;
+ } ProgAttr;
+
+ struct {
+ float yaw = -90.f;
+ float pitch = 0.f;
+ float roll = 0.f;
+ float fov = 45.0f;
+ glm::vec3 cameraPos = glm::vec3(0.0f, 0.0f, 3.0f);
+ glm::vec3 cameraFront = glm::vec3(0.0f, 0.0f, -1.0f);
+ glm::vec3 cameraUp = glm::vec3(0.0f, 1.0f, 0.0f);
+
+ void adjustFov(float diff) {
+ fov += diff;
+ if (fov < 1.0f) fov = 1.0f;
+ else if (fov > 120.0f) fov = 120.0f;
+ std::cerr << "field of view: " << fov << " °" << std::endl;
+ }
+
+ void moveForward(const float cameraSpeed) {
+ cameraPos += cameraSpeed * cameraFront;
+ }
+
+ void moveBackward(const float cameraSpeed) {
+ cameraPos -= cameraSpeed * cameraFront;
+ }
+
+ void moveLeft(const float cameraSpeed) {
+ cameraPos -= glm::normalize(
+ glm::cross(cameraFront, cameraUp)) * cameraSpeed;
+ }
+
+ void moveRight(const float cameraSpeed) {
+ cameraPos += glm::normalize(
+ glm::cross(cameraFront, cameraUp)) * cameraSpeed;
+ }
+
+ void moveUp(const float cameraSpeed) {
+ cameraPos += cameraSpeed * glm::normalize(cameraUp);
+ }
+
+ void moveDown(const float cameraSpeed) {
+ cameraPos -= cameraSpeed * glm::normalize(cameraUp);
+ }
+
+ void updateCameraFrontAndUp() {
+ std::cerr << "--- updateCameraFrontAndUp() --------" << std::endl;
+ dump("pitch, yaw, roll", glm::vec3(pitch, yaw, roll));
+ dump("cameraPos", cameraPos);
+ dump("cameraFront", cameraFront);
+ const auto pitchR = glm::radians(pitch); // around X axis
+ const auto yawR = glm::radians(yaw); // around Y axis
+ const auto rollR = glm::radians(roll); // around Z axis
+
+ cameraFront.x = cos(pitchR) * cos(yawR);
+ cameraFront.y = sin(pitchR);
+ cameraFront.z = cos(pitchR) * sin(yawR);
+ cameraFront = glm::normalize(cameraFront);
+ dump("cameraFront", cameraFront);
+ dump("cameraUp", cameraUp);
+
+ // TODO: review ROLL rotation and default angle
+ glm::mat4 rollMatrix = glm::rotate(
+ glm::mat4(1.0f), rollR, cameraFront);
+ cameraUp = glm::mat3(rollMatrix) * glm::vec3(0., 1., 0.);
+ dump("cameraUp", cameraUp);
+ std::cerr << "-------------------------------------" << std::endl;
+ }
+
+ void limitPitch() {
+ if (pitch > +89.0f) pitch = +89.0f;
+ if (pitch < -89.0f) pitch = -89.0f;
+ }
+
+ void turnLeft(const float angleSpeed) {
+ yaw -= angleSpeed;
+ updateCameraFrontAndUp();
+ }
+
+ void turnRight(const float angleSpeed) {
+ yaw += angleSpeed;
+ updateCameraFrontAndUp();
+ }
+
+ void turnUp(const float angleSpeed) {
+ pitch += angleSpeed;
+ limitPitch();
+ updateCameraFrontAndUp();
+ }
+
+ void turnDown(const float angleSpeed) {
+ pitch -= angleSpeed;
+ limitPitch();
+ updateCameraFrontAndUp();
+ }
+
+ void rollLeft(const float angleSpeed) {
+ roll += angleSpeed;
+ updateCameraFrontAndUp();
+ }
+
+ void rollRight(const float angleSpeed) {
+ roll -= angleSpeed;
+ updateCameraFrontAndUp();
+ }
+
+ } initialCtx, ctx;
+
+ const struct {
+ int width = 640;
+ int height = 398;
+ GLfloat ratio = (GLfloat) width / (GLfloat) height;
+ } TEX;
+
+ Configuration cfg;
+ std::ostream& logOutput = std::cerr;
+
+ void renderImmediateMode();
+ void runShaders(GLuint program);
+ Window getRootWindow(Window defaultValue);
+ void log(LogLevel level, std::string message);
+ int setNonBlocking(int fd);
+ void loadVertices();
+ GLuint loadTexture(const std::string& fileName, int width, int height);
+ void loadTextures(GLuint shaderProgram);
+ GLuint loadShaders();
+public:
+ Shark(const Configuration& cfg);
+ virtual ~Shark();
+ Shark(const Shark&) = delete;
+ Shark& operator=(const Shark&) = delete;
+ void run();
+};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bash-completion.sh Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,45 @@
+# ShaderShark
+# Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, version 3 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+_shader_shark_completion() {
+ local w0 w1 w2 w3
+
+ COMPREPLY=()
+ w0=${COMP_WORDS[COMP_CWORD]}
+ w1=${COMP_WORDS[COMP_CWORD-1]}
+ w2=${COMP_WORDS[COMP_CWORD-2]}
+ w3=${COMP_WORDS[COMP_CWORD-3]}
+
+ local COLOR=(
+ "333333"
+ "345678"
+ "147258"
+ )
+
+ if [[ "$w1" == "--texture" ]]; then
+ COMPREPLY=($(compgen -f -- "$w0"; compgen -d -S / -- "$w0"))
+ elif [[ "$w1" == "--background-color" ]]; then
+ COMPREPLY=($(compgen -W "${COLOR[*]}" -- "$w0"))
+ else
+ local OPTIONS=(
+ "--texture"
+ "--background-color"
+ "--root-window"
+ )
+ COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
+ fi
+}
+
+complete -F _shader_shark_completion shader-shark
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/license/gpl.txt Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+ To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights. Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received. You must make sure that they, too, receive
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+
+ Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+ For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software. For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
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+
+ Some devices are designed to deny users access to install or run
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+
+ Finally, every program is threatened constantly by software patents.
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+patents cannot be used to render the program non-free.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ TERMS AND CONDITIONS
+
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+
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+
+ Nothing in this License shall be construed as excluding or limiting
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+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
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+
+ 13. Use with the GNU Affero General Public License.
+
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+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
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+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
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+
+ If the Program specifies that a proxy can decide which future
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+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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+ 16. Limitation of Liability.
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+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
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+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/license/header.txt Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,16 @@
+/**
+ * OpenGL
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nbproject/configurations.xml Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configurationDescriptor version="100">
+ <logicalFolder name="root" displayName="root" projectFiles="true" kind="ROOT">
+ <df root="." name="0">
+ <in>Shark.cpp</in>
+ <in>shader-shark.cpp</in>
+ </df>
+ <logicalFolder name="ExternalFiles"
+ displayName="Important Files"
+ projectFiles="false"
+ kind="IMPORTANT_FILES_FOLDER">
+ <itemPath>Makefile</itemPath>
+ <itemPath>nbproject/private/launcher.properties</itemPath>
+ </logicalFolder>
+ </logicalFolder>
+ <sourceFolderFilter>^(nbproject)$</sourceFolderFilter>
+ <sourceRootList>
+ <Elem>.</Elem>
+ </sourceRootList>
+ <projectmakefile>Makefile</projectmakefile>
+ <confs>
+ <conf name="Default" type="0">
+ <toolsSet>
+ <compilerSet>default</compilerSet>
+ <dependencyChecking>false</dependencyChecking>
+ <rebuildPropChanged>false</rebuildPropChanged>
+ </toolsSet>
+ <codeAssistance>
+ </codeAssistance>
+ <makefileType>
+ <makeTool>
+ <buildCommandWorkingDir>.</buildCommandWorkingDir>
+ <buildCommand>${MAKE} -f Makefile</buildCommand>
+ <cleanCommand>${MAKE} -f Makefile clean</cleanCommand>
+ <executablePath>build/shader-shark</executablePath>
+ </makeTool>
+ <preBuild>
+ <preBuildCommandWorkingDir>.</preBuildCommandWorkingDir>
+ <preBuildCommand></preBuildCommand>
+ </preBuild>
+ </makefileType>
+ <item path="Shark.cpp" ex="false" tool="1" flavor2="0">
+ </item>
+ <item path="shader-shark.cpp" ex="false" tool="1" flavor2="0">
+ </item>
+ </conf>
+ </confs>
+</configurationDescriptor>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nbproject/project.xml Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+ <type>org.netbeans.modules.cnd.makeproject</type>
+ <configuration>
+ <data xmlns="http://www.netbeans.org/ns/make-project/1">
+ <name>ShaderShark</name>
+ <c-extensions/>
+ <cpp-extensions>cpp</cpp-extensions>
+ <header-extensions>h</header-extensions>
+ <sourceEncoding>UTF-8</sourceEncoding>
+ <make-dep-projects/>
+ <sourceRootList>
+ <sourceRootElem>.</sourceRootElem>
+ </sourceRootList>
+ <confList>
+ <confElem>
+ <name>Default</name>
+ <type>0</type>
+ </confElem>
+ </confList>
+ <formatting>
+ <project-formatting-style>false</project-formatting-style>
+ </formatting>
+ </data>
+ </configuration>
+</project>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/opengl.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,61 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <string>
+#include <stdexcept>
+
+#include <epoxy/gl.h>
+#include <epoxy/glx.h>
+#include <GL/glu.h>
+
+#include <glm/glm.hpp>
+#include <glm/ext.hpp>
+
+inline
+void quads(GLfloat tx, GLfloat ty, GLfloat x, GLfloat y, GLfloat z) {
+ glTexCoord2f(tx, ty);
+ glVertex3f(x, y, z);
+}
+
+inline
+void checkError(std::ostream* out) {
+ GLenum code = glGetError();
+ if (code == GL_NO_ERROR) {
+ if (out) *out << "GL check: OK" << std::endl;
+ } else {
+ const char* string = (const char*) gluErrorString(code);
+ if (out) *out << "GL check: " << string << std::endl;
+ else throw std::logic_error(std::string("GL error: ") + string);
+ }
+}
+
+inline
+GLenum toShaderType(const std::string& fileName) {
+ if (fileName.ends_with(".vert")) return GL_VERTEX_SHADER;
+ else if (fileName.ends_with(".frag")) return GL_FRAGMENT_SHADER;
+ else throw std::invalid_argument("Expecting *.vert or *.frag file");
+}
+
+inline
+void dump(const char* name, const glm::vec3& value) {
+ std::cerr << "dump: " << name << " = ["
+ << value.x << ", "
+ << value.y << ", "
+ << value.z << "]" << std::endl;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/shader-shark.cpp Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,50 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <iostream>
+#include <locale>
+#include <stdexcept>
+#include <vector>
+#include <string>
+
+#include "CLIParser.h"
+#include "Shark.h"
+
+int main(int argc, char** argv) {
+ setlocale(LC_ALL, "");
+ std::cout << "ShaderShark for OpenGL" << std::endl;
+ int result = 0;
+
+ try {
+ std::vector<std::string> arguments;
+ for (int i = 1; i < argc; i++) arguments.push_back(argv[i]);
+
+ CLIParser cliParser;
+ Configuration cfg = cliParser.parse(arguments);
+
+ Shark shaderShark(cfg);
+ shaderShark.run();
+ } catch (const std::exception& e) {
+ std::cerr << "Exception: " << e.what() << std::endl;
+ result = 1;
+ } catch (...) {
+ std::cerr << "Exception: unexpected" << std::endl;
+ result = 2;
+ }
+
+ return result;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/shaders/first.frag Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,10 @@
+#version 330 core
+
+uniform sampler2D jazz;
+in vec2 textureCoordinate;
+out vec3 outColor;
+
+void main(){
+ outColor = texture(jazz, textureCoordinate).xyz;
+ // outColor *= vec3(0.8, 1., 0.2);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/shaders/first.vert Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,13 @@
+#version 330 core
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+in vec3 vertices;
+in vec2 textureCoordinates;
+out vec2 textureCoordinate;
+
+void main() {
+ gl_Position = projection * view * model * vec4(vertices, 1.0f);
+ textureCoordinate = textureCoordinates;
+}
Binary file textures/jazz.png has changed
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/x11.h Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,90 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <cstring>
+
+#include <X11/Xatom.h>
+#include <X11/XKBlib.h>
+#include <X11/keysymdef.h>
+
+/**
+ * Publish our PID (process ID) through the X11 window property.
+ */
+inline
+void setX11PID(Display* dpy, Window win) {
+ Atom _NET_WM_PID = XInternAtom(dpy, "_NET_WM_PID", False);
+ pid_t pid = getpid();
+ XChangeProperty(dpy, win, _NET_WM_PID, XA_CARDINAL,
+ 32, PropModeReplace, (unsigned char *) &pid, 1);
+}
+
+inline
+bool setFullscreen(Display* dpy, Window win, bool fullscreen) {
+ XEvent ev;
+ Atom wmState = XInternAtom(dpy, "_NET_WM_STATE", False);
+ Atom wmFullscreen = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
+ ev.xclient.type = ClientMessage;
+ ev.xclient.serial = 0; // TODO: serial?
+ ev.xclient.send_event = True;
+ ev.xclient.display = dpy;
+ ev.xclient.window = win;
+ ev.xclient.message_type = wmState;
+ ev.xclient.format = 32;
+ ev.xclient.data.l[0] = fullscreen;
+ ev.xclient.data.l[1] = wmFullscreen;
+ ev.xclient.data.l[2] = None;
+ XSendEvent(dpy, DefaultRootWindow(dpy), False, SubstructureNotifyMask, &ev);
+ return fullscreen;
+}
+
+class DecodedKey {
+public:
+ unsigned int code;
+ KeySym symbol;
+ const char* name;
+
+ bool matches(
+ KeySym s1,
+ KeySym s2 = XK_VoidSymbol,
+ KeySym s3 = XK_VoidSymbol,
+ KeySym s4 = XK_VoidSymbol,
+ KeySym s5 = XK_VoidSymbol,
+ KeySym s6 = XK_VoidSymbol,
+ KeySym s7 = XK_VoidSymbol,
+ KeySym s8 = XK_VoidSymbol
+ ) {
+ return symbol == s1
+ || symbol == s2
+ || symbol == s3
+ || symbol == s4
+ || symbol == s5
+ || symbol == s6
+ || symbol == s7
+ || symbol == s8;
+ }
+};
+
+inline
+const DecodedKey decodeKeycode(Display * dpy, KeyCode keyCode) {
+ DecodedKey dk = {};
+ dk.code = keyCode;
+ dk.symbol = XkbKeycodeToKeysym(dpy, keyCode, 0, 0);
+ dk.name = XKeysymToString(dk.symbol);
+ return dk;
+}
