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();
}