//--------------------------------------------------------------------
Status MeshManager::mLoad(std::shared_ptr<Mesh> mesh, const std::string &sid,
std::vector<glm::vec3> &positions,
std::vector<glm::vec2> &uvs,
std::vector<glm::vec3> &flatNormals,
std::vector<VertexIndices> &vertexIndices) const {
bool hasUv, hasFlat, hasSmooth;
hasUv = !uvs.empty();
if (!hasUv) {
Log::trace(TAG, "no UV mapping found for mesh \"%s\"", sid.c_str());
}
hasFlat = !flatNormals.empty();
if (!hasFlat) {
Log::trace(TAG, "no Flat normal mapping found for mesh \"%s\"", sid.c_str());
}
// generates normals
std::vector<glm::vec3> smoothNormals;
if (!hasFlat) {
generateFlatNormals(flatNormals, positions, vertexIndices);
}
generateSmoothNormals(smoothNormals, flatNormals, positions, vertexIndices, hasFlat);
hasSmooth = true; //TODO metadata
if(!hasFlat) { //TODO handle it with metadata
flatNormals.clear(); //no need from there
}
std::vector<U16> indices;
std::vector<Vertex> vertices;
// map one Vertex object to one or many VertexIndices
std::map<VertexIndices, U16> indexMap;
U16 currentVertexIndex = 0;
//create Vertex objects out of VertexIndices.
for (const VertexIndices& vi : vertexIndices) {
// if Vertex object of this indices doesn't exist already
if (indexMap.find(vi) == indexMap.end()) {
//create it & refer to it.
indexMap[vi] = currentVertexIndex;
indices.push_back(currentVertexIndex);
currentVertexIndex++;
Vertex v;
v.setPosition(positions[vi.p]);
if (hasUv) {
v.setUv(uvs[vi.uv]);
}
if (hasFlat) {
v.setFlatNormal(flatNormals[vi.fn]);
}
if (hasSmooth) {
v.setSmoothNormal(smoothNormals[vi.sn]);
}
vertices.push_back(v);
} else {
indices.push_back(indexMap[vi]);
}
}
U32 vertexSize = 0;
U32 vertexCount = (U32) vertices.size();
//Positions
VertexElement positionElement(VertexElement::Semantic::POSITION, 3, GL_FLOAT, vertexSize);
vertexSize += positionElement.getSizeInByte();
mesh->addVertexElement(positionElement);
//Normals
if (hasFlat) {
VertexElement flatNormalElement(VertexElement::Semantic::FLAT_NORMAL, 3, GL_FLOAT, vertexSize);
vertexSize += flatNormalElement.getSizeInByte();
mesh->addVertexElement(flatNormalElement);
}
if (hasSmooth) {
VertexElement smoothNormalElement(VertexElement::Semantic::SMOOTH_NORMAL, 3, GL_FLOAT, vertexSize);
vertexSize += smoothNormalElement.getSizeInByte();
mesh->addVertexElement(smoothNormalElement);
}
// UVs
if (hasUv) {
VertexElement uvElement(VertexElement::Semantic::UV, 2, GL_FLOAT, vertexSize);
vertexSize += uvElement.getSizeInByte();
mesh->addVertexElement(uvElement);
}
mesh->mVertexSize = vertexSize;
mesh->mVertexCount = vertexCount;
//Log::debug(TAG, "vertexSize=%d vertexCount=%d", vertexSize, vertexCount);
//Log::debug(TAG, "indices=%d", indices.size());
BYTE* data = new BYTE[vertexSize * vertexCount];
/////////////////////////////////////////////////////////////////////////
// Generate vertex buffer
//delete mesh->mVertexBuffer;
if (mesh->mVertexBuffer != nullptr) {
mesh->mVertexBuffer->wipe();
}
mesh->mVertexBuffer = std::make_shared<VertexBuffer>(vertexSize, (U32) (vertexSize * vertexCount));
/////////////////////////////////////////////////////////////////////////
// Fills data
for (U32 v = 0; v < vertexCount; ++v) {
if (mesh->hasVertexElement(VertexElement::Semantic::POSITION)) {
VertexElement ve = mesh->getVertexElement(VertexElement::Semantic::POSITION);
memcpy(&data[v * vertexSize + ve.getOffset()], &(vertices[v].getPosition()), ve.getSizeInByte());
}
if (mesh->hasVertexElement(VertexElement::Semantic::FLAT_NORMAL)) {
VertexElement ve = mesh->getVertexElement(VertexElement::Semantic::FLAT_NORMAL);
memcpy(&data[v * vertexSize + ve.getOffset()], &(vertices[v].getFlatNormal()), ve.getSizeInByte());
}
if (mesh->hasVertexElement(VertexElement::Semantic::SMOOTH_NORMAL)) {
VertexElement ve = mesh->getVertexElement(VertexElement::Semantic::SMOOTH_NORMAL);
memcpy(&data[v * vertexSize + ve.getOffset()], &(vertices[v].getSmoothNormal()), ve.getSizeInByte());
}
if (mesh->hasVertexElement(VertexElement::Semantic::UV)) {
VertexElement ve = mesh->getVertexElement(VertexElement::Semantic::UV);
memcpy(&data[v * vertexSize + ve.getOffset()], &(vertices[v].getUv()), ve.getSizeInByte());
}
}
/////////////////////////////////////////////////////////////////////////
// Uploads data to GPU
mesh->mVertexBuffer->writeData(0, vertexSize * vertexCount, data);
delete[] data;
//delete mesh->mIndexBuffer;
if (mesh->mIndexBuffer != nullptr) {
mesh->mIndexBuffer->wipe();
}
mesh->mIndexBuffer = std::make_shared<IndexBuffer>((U32) indices.size());
mesh->mIndexBuffer->writeData(indices.data());
mesh->mBoundingSphere = generateBoundingSphere(positions);
Log::trace(TAG, "Mesh %s loaded", sid.c_str());
return STATUS_OK;
}
void init()
{
GLfloat skyboxVertices[] = {
// Positions
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, 1.0f
};
planet = tetrahedron(5);
object = ObjLoadModel("include/obj/torus.obj");
vec3 tangent[planet.vertexNumber];
vec3 bitangent[planet.vertexNumber];
*tangent = *generateTangents(planet.vertexNumber, planet.points, tangent, bitangent);
vec3 vna[planet.vertexNumber];
*vna = *generateSmoothNormals(planet.vertexNumber, vna, planet.points, planet.normals);
createShader(&skyboxShader, "src/shaders/skybox.vert",
"src/shaders/skybox.frag");
createShader(&sunShader, "src/shaders/sun.vert",
"src/shaders/sun.frag");
createShader(&planetShader, "src/shaders/planet.vert",
"src/shaders/planet.frag");
createShader(&atmosphereShader, "src/shaders/atmosphere.vert",
"src/shaders/atmosphere.frag");
glGenFramebuffers(1, &hdrFBO);
glGenTextures(1, &colorBuffer);
glBindTexture(GL_TEXTURE_2D, colorBuffer);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, WIDTH, HEIGHT, 0, GL_RGB, GL_FLOAT, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glGenRenderbuffers(1, &rboDepth);
glBindRenderbuffer(GL_RENDERBUFFER, rboDepth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, WIDTH, HEIGHT);
glBindFramebuffer(GL_FRAMEBUFFER, hdrFBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorBuffer, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboDepth);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
printf("Framebuffer not complete!\n");
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glGenVertexArrays(1, &planetVAO);
glBindVertexArray(planetVAO);
glGenBuffers(1, &planetVBO);
glBindBuffer(GL_ARRAY_BUFFER, planetVBO);
glBufferData(GL_ARRAY_BUFFER, planet.size + planet.nsize, NULL, GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, planet.size, planet.points);
glBufferSubData(GL_ARRAY_BUFFER, planet.size, planet.nsize, vna);
glBufferSubData(GL_ARRAY_BUFFER, planet.size+planet.nsize, sizeof(tangent), tangent);
glBufferSubData(GL_ARRAY_BUFFER, planet.size+planet.nsize+sizeof(tangent), sizeof(tangent), tangent);
vPosition = glGetAttribLocation(planetShader, "vPosition");
glEnableVertexAttribArray(vPosition);
glVertexAttribPointer(vPosition, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(0));
vNormal = glGetAttribLocation(planetShader, "vNormal");
glEnableVertexAttribArray(vNormal);
glVertexAttribPointer(vNormal, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(planet.size));
vTangent = glGetAttribLocation(planetShader, "vTangent");
glEnableVertexAttribArray(vTangent);
glVertexAttribPointer(vTangent, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(planet.size+planet.nsize));
vBitangent = glGetAttribLocation(planetShader, "vBitangent");
glEnableVertexAttribArray(vBitangent);
glVertexAttribPointer(vBitangent, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(planet.size+planet.nsize+sizeof(tangent)));
glBindVertexArray(0);
glGenVertexArrays(1, &skyboxVAO);
glBindVertexArray(skyboxVAO);
glGenBuffers(1, &skyboxVBO);
glBindBuffer(GL_ARRAY_BUFFER, skyboxVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(skyboxVertices), skyboxVertices, GL_STATIC_DRAW);
vPosition = glGetAttribLocation(skyboxShader, "vPosition");
glEnableVertexAttribArray(vPosition);
glVertexAttribPointer(vPosition, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid*)0);
glBindVertexArray(0);
glGenVertexArrays(1, &objectVAO);
glBindVertexArray(objectVAO);
glGenBuffers(1, &objectVBO);
glBindBuffer(GL_ARRAY_BUFFER, objectVBO);
glBufferData(GL_ARRAY_BUFFER, object.size + object.nsize, NULL, GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, object.size, object.points);
glBufferSubData(GL_ARRAY_BUFFER, object.size, object.nsize, object.normals);
vPosition = glGetAttribLocation(sunShader, "vPosition");
glEnableVertexAttribArray(vPosition);
glVertexAttribPointer(vPosition, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(0));
vNormal = glGetAttribLocation(sunShader, "vNormal");
glEnableVertexAttribArray(vNormal);
glVertexAttribPointer(vNormal, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(object.size));
glBindVertexArray(0);
glGenVertexArrays(1, &atmosphereVAO);
glBindVertexArray(atmosphereVAO);
glGenBuffers(1, &atmosphereVBO);
glBindBuffer(GL_ARRAY_BUFFER, atmosphereVBO);
glBufferData(GL_ARRAY_BUFFER, planet.size + planet.nsize, NULL, GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, planet.size, planet.points);
glBufferSubData(GL_ARRAY_BUFFER, planet.size, planet.nsize, planet.normals);
vPosition = glGetAttribLocation(atmosphereShader, "vPosition");
glEnableVertexAttribArray(vPosition);
glVertexAttribPointer(vPosition, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(0));
vNormal = glGetAttribLocation(atmosphereShader, "vNormal");
glEnableVertexAttribArray(vNormal);
glVertexAttribPointer(vNormal, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), BUFFER_OFFSET(planet.size));
glBindVertexArray(0);
glEnable(GL_DEPTH_TEST);
}