int main(int /*argc*/, char ** /*argv*/) {
BaseApp app;
GLuint program;
GLuint vao;
GLuint vbo;
GLuint ebo;
mat4 p;
int z = 4;
auto mainWindow = app.getMainWindow();
std::string prefix = app.getResourceDir() + "Shaders/Examples/e04_Textures/";
std::string texPrefix = app.getResourceDir() + "Textures/PGP2015/";
GLuint texture[9];
app.addInitCallback([&]() {
auto vs = compileShader(GL_VERTEX_SHADER, Loader::text(prefix + "empty.vert"));
auto gs = compileShader(GL_GEOMETRY_SHADER, Loader::text(prefix + "quad.geo"));
auto fs = compileShader(GL_FRAGMENT_SHADER, Loader::text(prefix + "texture.frag"));
program = createProgram(vs, gs, fs);
glCreateVertexArrays(1, &vao);
glBindVertexArray(vao);
texture[0] = Loader::texture(texPrefix + "up.bmp");
texture[1] = Loader::texture(texPrefix + "down.bmp");
texture[2] = Loader::texture(texPrefix + "front.bmp");
texture[3] = Loader::texture(texPrefix + "back.bmp");
texture[4] = Loader::texture(texPrefix + "left.bmp");
texture[5] = Loader::texture(texPrefix + "right.bmp");
texture[6] = Loader::texture(texPrefix + "du2.bmp");
texture[7] = Loader::texture(texPrefix + "du05a.bmp");
texture[8] = Loader::texture(texPrefix + "du05b.bmp");
});
app.addDrawCallback([&]() {
int w = mainWindow->getWidth();
int h = mainWindow->getHeight();
glViewport(0, 0, w, h);
glClearColor(0.2, 0.2, 0.2, 1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glUseProgram(program);
for (int y = 0; y < 3; y++){
for (int x = 0; x < 3; x++) {
glUniform2f(glGetUniformLocation(program, "posMin"), -1 + x*(2.0 / 3), -1 + y*(2.0 / 3));
glUniform2f(glGetUniformLocation(program, "posMax"), -1 + (x + 1)*(2.0 / 3), -1 + (y + 1)*(2.0 / 3));
glBindTextureUnit(0, texture[y * 3 + x]);
glDrawArrays(GL_POINTS, 0, 1);
}
}
});
return app.run();
}
int main(int /*argc*/, char ** /*argv*/) {
BaseApp app;
ProgramObject program;
auto mainWindow = app.getMainWindow();
std::string prefix = app.getResourceDir() + "Shaders/Examples/e06_ModelLoader/";
PerspectiveCamera cam;
OrbitManipulator manipulator(&cam);
manipulator.setupCallbacks(app);
NodeShared root;
GLuint query[2];
app.addInitCallback([&]() {
auto vs = compileShader(GL_VERTEX_SHADER, Loader::text(prefix + "phong.vert"));
auto fs = compileShader(GL_FRAGMENT_SHADER, Loader::text(prefix + "phong.frag"));
program = createProgram(vs, fs);
root = Loader::scene(app.getResourceDir() + "Models/sponza/sponza.fbx");
glCreateQueries(GL_TIMESTAMP, 2, query);
SDL_GL_SetSwapInterval(0);
});
app.addResizeCallback([&](int w, int h) {
glViewport(0, 0, w, h);
cam.setAspect(float(w) / float(h));
});
app.addDrawCallback([&]() {
glQueryCounter(query[0], GL_TIMESTAMP);
glClearColor(0.2, 0.2, 0.2, 1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
//bunny
program.use();
program.setMatrix4fv("p", value_ptr(cam.getProjection()));
program.setMatrix4fv("v", value_ptr(cam.getView()));
drawNode(program, root);
glQueryCounter(query[1], GL_TIMESTAMP);
GLuint64 time1, time2;
glGetQueryObjectui64v(query[0], GL_QUERY_RESULT, &time1);
glGetQueryObjectui64v(query[1], GL_QUERY_RESULT, &time2);
std::string s = "fps: " + std::to_string(1e9 / (time2 - time1)) + " (" + std::to_string(ImGui::GetIO().Framerate) + ")";
label(s, 0, 0, 300, 100);
});
return app.run();
}
int main(int /*argc*/, char ** /*argv*/) {
BaseApp app;
ProgramObject programEnv, program;
auto mainWindow = app.getMainWindow();
PerspectiveCamera cam;
OrbitManipulator manipulator(&cam);
manipulator.setupCallbacks(app);
manipulator.setZoom(3);
GLuint diffuseTexture;
GLuint specularTexture;
GLuint vao;
GLuint vaoEmpty;
GLuint vbo;
int32_t sphereSizeX = 20;
int32_t sphereSizeY = 20;
app.addInitCallback([&]() {
std::string prefix = app.getResourceDir() + "Shaders/Tutorial/";
auto vs = compileShader(GL_VERTEX_SHADER,
"#version 450\n",
Loader::text(prefix + "uv.vp"));
auto fs = compileShader(GL_FRAGMENT_SHADER,
"#version 450\n",
Loader::text(prefix + "lighting.vp"),
Loader::text(prefix + "uv.fp"));
program = createProgram(vs, fs);
std::string texPrefix = app.getResourceDir() + "Textures/Tutorial/";
diffuseTexture = Loader::texture(texPrefix + "earth.png");
specularTexture = Loader::texture(texPrefix + "earth_s.png");
glCreateBuffers(1, &vbo);
const uint32_t floatsPerVertex = 6;
const uint32_t vertiesPerFace = 6;
float*vertices = new float[sphereSizeX*sphereSizeY*vertiesPerFace*floatsPerVertex];
for (int32_t y = 0; y<sphereSizeY; ++y) {
for (int32_t x = 0; x<sphereSizeX; ++x) {
for (uint32_t k = 0; k<vertiesPerFace; ++k) {
const int32_t xOffset[] = { 0,1,0,0,1,1 };
const int32_t yOffset[] = { 0,0,1,1,0,1 };
float u = (float)(x + xOffset[k]) / sphereSizeX;
float v = (float)(y + yOffset[k]) / sphereSizeY;
float xAngle = -u*glm::two_pi<float>();
float yAngle = v*glm::pi<float>();
uint32_t faceId = y*sphereSizeX + x;
uint32_t faceVertex = faceId*vertiesPerFace + k;
vertices[faceVertex*floatsPerVertex + 0] = glm::cos(xAngle)*glm::sin(yAngle);
vertices[faceVertex*floatsPerVertex + 1] = -glm::cos(yAngle);
vertices[faceVertex*floatsPerVertex + 2] = glm::sin(xAngle)*glm::sin(yAngle);
vertices[faceVertex*floatsPerVertex + 3] = 1;
vertices[faceVertex*floatsPerVertex + 4] = u;
vertices[faceVertex*floatsPerVertex + 5] = v;
}
}
}
glNamedBufferData(vbo, sizeof(float)*sphereSizeX*sphereSizeY*vertiesPerFace*floatsPerVertex, vertices, GL_STATIC_DRAW);
delete[]vertices;
glCreateVertexArrays(1, &vao);
glEnableVertexArrayAttrib(vao, 0);
glVertexArrayAttribFormat(vao, 0, 4, GL_FLOAT, 0, 0);
glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(float)*floatsPerVertex);
glEnableVertexArrayAttrib(vao, 1);
glVertexArrayAttribFormat(vao, 1, 2, GL_FLOAT, 0, 0);
glVertexArrayVertexBuffer(vao, 1, vbo, sizeof(float) * 4, sizeof(float)*floatsPerVertex);
glClearColor(0, 0, 0, 1);
glDisable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
});
app.addResizeCallback([&](int w, int h) {
glViewport(0, 0, w, h);
cam.setAspect(float(w) / float(h));
});
app.addDrawCallback([&]() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
program.use();
glBindTextureUnit(0, diffuseTexture);
glBindTextureUnit(1, specularTexture);
program.setMatrix4fv("p", value_ptr(cam.getProjection()));
program.setMatrix4fv("v", value_ptr(cam.getView()));
glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLES, 0, sphereSizeX*sphereSizeY * 6);
glBindVertexArray(0);
});
return app.run();
}
int main(int /*argc*/, char ** /*argv*/) {
BaseApp app;
GLuint program;
GLuint vao;
GLuint vbo;
GLuint ebo;
mat4 p;
int z = 4;
auto window0 = app.getMainWindow();
window0->setSize(200, 200);
window0->move(100, 100);
auto window1 = app.addWindow(200, 200);
window1->move(100, 300);
auto window2 = app.addWindow(200, 200);
window2->move(300, 100);
auto window3 = app.addWindow(200, 200);
window3->move(300, 300);
std::string prefix = app.getResourceDir() + "Shaders/Examples/e03_MultipleWindows/";
app.addInitCallback([&]() {
auto vs = compileShader(GL_VERTEX_SHADER, Loader::text(prefix+"lambert.vert"));
auto fs = compileShader(GL_FRAGMENT_SHADER, Loader::text(prefix + "lambert.frag"));
program = createProgram(vs, fs);
bunnyInit(vao, vbo, ebo);
});
app.addDrawCallback([&]() {
glClearColor(0.2, 0.2, 0.2, 1);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glUseProgram(program);
int w = window0->getWidth();
int h = window0->getHeight();
glViewport(0, 0, w, h);
p = perspective(radians(45.0f),float(w)/float(h), 0.1f, 1000.0f);
glUniformMatrix4fv(glGetUniformLocation(program, "p"), 1, 0, value_ptr(p));
int z = 4;
mat4 v = lookAt(vec3(z,z,z), vec3(0, 0, 0), vec3(0, 1, 0));
glUniformMatrix4fv(glGetUniformLocation(program, "v"), 1, 0, value_ptr(v));
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
bunnyDraw();
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
});
app.addDrawCallback([&]() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int w = window1->getWidth();
int h = window1->getHeight();
glViewport(0, 0, w, h);
mat4 v = lookAt(vec3(z, 0, 0), vec3(0, 0, 0), vec3(0, 1, 0));
glUniformMatrix4fv(glGetUniformLocation(program, "v"), 1, 0, value_ptr(v));
bunnyDraw();
}, window1);
app.addDrawCallback([&]() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int w = window2->getWidth();
int h = window2->getHeight();
glViewport(0, 0, w, h);
mat4 v = lookAt(vec3(0, z, 0), vec3(0, 0, 0), vec3(1, 0, 0));
glUniformMatrix4fv(glGetUniformLocation(program, "v"), 1, 0, value_ptr(v));
bunnyDraw();
}, window2);
app.addDrawCallback([&]() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int w = window3->getWidth();
int h = window3->getHeight();
glViewport(0, 0, w, h);
mat4 v = lookAt(vec3(0, 0, z), vec3(0, 0, 0), vec3(0, 1, 0));
glUniformMatrix4fv(glGetUniformLocation(program, "v"), 1, 0, value_ptr(v));
bunnyDraw();
}, window3);
return app.run();
}
int main(int /*argc*/, char ** /*argv*/) {
BaseApp app;
ProgramObject programPlanet;
ProgramObject programAtmosphere;
ProgramObject programStars;
auto mainWindow = app.getMainWindow();
PerspectiveCamera cam;
OrbitManipulator manipulator(&cam);
manipulator.setupCallbacks(app);
GLuint vao;
GLuint vbo;
bool wireframe = false;
int starCount = 20000;
int seed = 0;
app.addInitCallback([&]() {
string prefix = app.getResourceDir() + "shaders/Nei/n01_Planet/";
auto vert = compileShader(GL_VERTEX_SHADER, Loader::text(prefix + "empty.vert"));
auto tesc = compileShader(GL_TESS_CONTROL_SHADER, Loader::text(prefix + "planet.tesc"));
auto tese = compileShader(GL_TESS_EVALUATION_SHADER, Loader::text(prefix + "planet.tese"));
auto frag = compileShader(GL_FRAGMENT_SHADER, Loader::text(prefix + "planet.frag"));
programPlanet = createProgram(vert, tesc, tese, frag);
vert = compileShader(GL_VERTEX_SHADER, Loader::text(prefix + "empty.vert"));
tesc = compileShader(GL_TESS_CONTROL_SHADER, Loader::text(prefix + "atmosphere.tesc"));
tese = compileShader(GL_TESS_EVALUATION_SHADER, Loader::text(prefix + "atmosphere.tese"));
frag = compileShader(GL_FRAGMENT_SHADER, Loader::text(prefix + "atmosphere.frag"));
programAtmosphere = createProgram(vert, tesc, tese, frag);
vert = compileShader(GL_VERTEX_SHADER, Loader::text(prefix + "stars.vert"));
frag = compileShader(GL_FRAGMENT_SHADER, Loader::text(prefix + "stars.frag"));
programStars = createProgram(vert, frag);
glCreateVertexArrays(1, &vao);
float distance = 400;
vector<vec4> vec;
vec.reserve(starCount);
for (int i = 0; i<starCount; i++) {
float a = ((float)rand() / RAND_MAX - 0.5);
float b = ((float)rand() / RAND_MAX - 0.5);
float c = ((float)rand() / RAND_MAX - 0.5);
float d = (float)rand() / RAND_MAX * 5 + 1;
vec4 v(a, b, c, 0);
v = normalize(v);
v *= distance;
v.w = d;
vec.push_back(v);
}
glCreateBuffers(1, &vbo);
glNamedBufferData(vbo, sizeof(vec4)*vec.size(), vec.data(), GL_STATIC_DRAW);
glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(vec4));
glVertexArrayAttribFormat(vao, 0, 4, GL_FLOAT, 0, 0);
glEnableVertexArrayAttrib(vao, 0);
glBindVertexArray(vao);
});
app.addUpdateCallback([&](float dt) {
manipulator.update(dt);
});
app.addDrawCallback([&]() {
int w = mainWindow->getWidth();
int h = mainWindow->getHeight();
glViewport(0, 0, w, h);
glClearColor(0, 0, 0, 1);
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glPolygonMode(GL_FRONT_AND_BACK, wireframe ? GL_LINE : GL_FILL);
programStars.use();
programStars.setMatrix4fv("v", value_ptr(cam.getView()));
programStars.setMatrix4fv("p", value_ptr(cam.getProjection()));
glEnable(GL_PROGRAM_POINT_SIZE);
glDrawArrays(GL_POINTS, 0, starCount);
programPlanet.use();
programPlanet.setMatrix4fv("v", value_ptr(cam.getView()));
programPlanet.setMatrix4fv("p", value_ptr(cam.getProjection()));
programPlanet.set3fv("camPos", value_ptr(cam.getEye()));
programPlanet.set1i("seed", seed);
programPlanet.set1f("time", app.getTimeFromStart());
glPatchParameteri(GL_PATCH_VERTICES, 1);
glDrawArraysInstanced(GL_PATCHES, 0, 1, 16);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
programAtmosphere.use();
programAtmosphere.setMatrix4fv("v", value_ptr(cam.getView()));
programAtmosphere.setMatrix4fv("p", value_ptr(cam.getProjection()));
programAtmosphere.set3fv("camPos", value_ptr(cam.getEye()));
programAtmosphere.set1ui("seed", seed);
programAtmosphere.set1f("time", app.getTimeFromStart());
glPatchParameteri(GL_PATCH_VERTICES, 1);
glDrawArrays(GL_PATCHES, 0, 1);
});
return app.run();
}
