GfxContext::GfxContext()
: m_TriangleProgram(nullptr)
{
// TODO: Shouldn't be done in here! Move to client's code!
auto cubeGeom = LoadGeometryFromObj("resources\\cube.obj", "cube");
auto cube = shared_ptr<SceneObject>(new SceneObject());
auto cube2 = shared_ptr<SceneObject>(new SceneObject());
cube->Attributes.Geometry = cubeGeom;
cube2->Attributes.Geometry = cubeGeom;
cube2->Move(float3(0.0f, 3.0f, 0.0f));
m_Scene.Add(cube);
m_Scene.Add(cube2);
CShader* fShader = new CShader(GL_FRAGMENT_SHADER, "resources/shaders/mvp.frag");
CShader* vShader = new CShader(GL_VERTEX_SHADER, "resources/shaders/mvp.vert");
fShader->Compile();
vShader->Compile();
m_TriangleProgram = new CProgram();
m_TriangleProgram->Attach(fShader);
m_TriangleProgram->Attach(vShader);
m_TriangleProgram->Link();
m_Textures["grass"] = LoadTextureDDS("resources/textures/test-rgb8-256b.dds");
glEnable(GL_DEPTH_TEST);
}
bool XmlHandler::ReadFile(const char* fileName, OVR::Render::RenderDevice* pRender,
OVR::Render::Scene* pScene,
OVR::Array<Ptr<CollisionModel> >* pCollisions,
OVR::Array<Ptr<CollisionModel> >* pGroundCollisions)
{
if(pXmlDocument->LoadFile(fileName) != 0)
{
return false;
}
// Extract the relative path to our working directory for loading textures
filePath[0] = 0;
SPInt pos = 0;
SPInt len = strlen(fileName);
for(SPInt i = len; i > 0; i--)
{
if (fileName[i-1]=='\\' || fileName[i-1]=='/')
{
memcpy(filePath, fileName, i);
filePath[i] = 0;
break;
}
}
// Load the textures
OVR_DEBUG_LOG_TEXT(("Loading textures..."));
XMLElement* pXmlTexture = pXmlDocument->FirstChildElement("scene")->FirstChildElement("textures");
if (pXmlTexture)
{
pXmlTexture->QueryIntAttribute("count", &textureCount);
pXmlTexture = pXmlTexture->FirstChildElement("texture");
}
for(int i = 0; i < textureCount; ++i)
{
const char* textureName = pXmlTexture->Attribute("fileName");
SPInt dotpos = strcspn(textureName, ".");
char fname[300];
if (pos == len)
{
OVR_sprintf(fname, 300, "%s", textureName);
}
else
{
OVR_sprintf(fname, 300, "%s%s", filePath, textureName);
}
SysFile* pFile = new SysFile(fname);
Ptr<Texture> texture;
if (textureName[dotpos + 1] == 'd' || textureName[dotpos + 1] == 'D')
{
// DDS file
texture.SetPtr(*LoadTextureDDS(pRender, pFile));
}
else
{
texture.SetPtr(*LoadTextureTga(pRender, pFile));
}
Textures.PushBack(texture);
pFile->Close();
pFile->Release();
pXmlTexture = pXmlTexture->NextSiblingElement("texture");
}
OVR_DEBUG_LOG_TEXT(("Done.\n"));
// Load the models
pXmlDocument->FirstChildElement("scene")->FirstChildElement("models")->
QueryIntAttribute("count", &modelCount);
OVR_DEBUG_LOG(("Loading models... %i models to load...", modelCount));
XMLElement* pXmlModel = pXmlDocument->FirstChildElement("scene")->
FirstChildElement("models")->FirstChildElement("model");
for(int i = 0; i < modelCount; ++i)
{
if (i % 15 == 0)
{
OVR_DEBUG_LOG_TEXT(("%i models remaining...", modelCount - i));
}
Models.PushBack(*new Model(Prim_Triangles));
bool isCollisionModel = false;
pXmlModel->QueryBoolAttribute("isCollisionModel", &isCollisionModel);
Models[i]->IsCollisionModel = isCollisionModel;
if (isCollisionModel)
{
Models[i]->Visible = false;
}
//read the vertices
OVR::Array<Vector3f> *vertices = new OVR::Array<Vector3f>();
ParseVectorString(pXmlModel->FirstChildElement("vertices")->FirstChild()->
ToText()->Value(), vertices);
for (unsigned int vertexIndex = 0; vertexIndex < vertices->GetSize(); ++vertexIndex)
{
vertices->At(vertexIndex).x *= -1.0f;
}
//read the normals
OVR::Array<Vector3f> *normals = new OVR::Array<Vector3f>();
ParseVectorString(pXmlModel->FirstChildElement("normals")->FirstChild()->
ToText()->Value(), normals);
for (unsigned int normalIndex = 0; normalIndex < normals->GetSize(); ++normalIndex)
{
normals->At(normalIndex).z *= -1.0f;
}
//read the textures
OVR::Array<Vector3f> *diffuseUVs = new OVR::Array<Vector3f>();
OVR::Array<Vector3f> *lightmapUVs = new OVR::Array<Vector3f>();
int diffuseTextureIndex = -1;
int lightmapTextureIndex = -1;
XMLElement* pXmlCurMaterial = pXmlModel->FirstChildElement("material");
while(pXmlCurMaterial != NULL)
{
if(pXmlCurMaterial->Attribute("name", "diffuse"))
{
pXmlCurMaterial->FirstChildElement("texture")->
QueryIntAttribute("index", &diffuseTextureIndex);
if(diffuseTextureIndex > -1)
{
ParseVectorString(pXmlCurMaterial->FirstChildElement("texture")->
FirstChild()->ToText()->Value(), diffuseUVs, true);
}
}
else if(pXmlCurMaterial->Attribute("name", "lightmap"))
{
pXmlCurMaterial->FirstChildElement("texture")->
QueryIntAttribute("index", &lightmapTextureIndex);
if(lightmapTextureIndex > -1)
{
XMLElement* firstChildElement = pXmlCurMaterial->FirstChildElement("texture");
XMLNode* firstChild = firstChildElement->FirstChild();
XMLText* text = firstChild->ToText();
const char* value = text->Value();
ParseVectorString(value, lightmapUVs, true);
}
}
pXmlCurMaterial = pXmlCurMaterial->NextSiblingElement("material");
}
//set up the shader
Ptr<ShaderFill> shader = *new ShaderFill(*pRender->CreateShaderSet());
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Vertex, VShader_MVP));
if(diffuseTextureIndex > -1)
{
shader->SetTexture(0, Textures[diffuseTextureIndex]);
if(lightmapTextureIndex > -1)
{
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_MultiTexture));
shader->SetTexture(1, Textures[lightmapTextureIndex]);
}
else
{
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_Texture));
}
}
else
{
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_LitGouraud));
}
Models[i]->Fill = shader;
//add all the vertices to the model
const UPInt numVerts = vertices->GetSize();
for(UPInt v = 0; v < numVerts; ++v)
{
if(diffuseTextureIndex > -1)
{
if(lightmapTextureIndex > -1)
{
Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255),
diffuseUVs->At(v).x, diffuseUVs->At(v).y, lightmapUVs->At(v).x, lightmapUVs->At(v).y,
normals->At(v).x, normals->At(v).y, normals->At(v).z);
}
else
{
Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255),
diffuseUVs->At(v).x, diffuseUVs->At(v).y, 0, 0,
normals->At(v).x, normals->At(v).y, normals->At(v).z);
}
}
else
{
Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 0, 0, 128),
0, 0, 0, 0,
normals->At(v).x, normals->At(v).y, normals->At(v).z);
}
}
// Read the vertex indices for the triangles
const char* indexStr = pXmlModel->FirstChildElement("indices")->
FirstChild()->ToText()->Value();
UPInt stringLength = strlen(indexStr);
for(UPInt j = 0; j < stringLength; )
{
UPInt k = j + 1;
for(; k < stringLength; ++k)
{
if (indexStr[k] == ' ')
break;
}
char text[20];
for(UPInt l = 0; l < k - j; ++l)
{
text[l] = indexStr[j + l];
}
text[k - j] = '\0';
Models[i]->Indices.PushBack((unsigned short)atoi(text));
j = k + 1;
}
// Reverse index order to match original expected orientation
Array<UInt16>& indices = Models[i]->Indices;
UPInt indexCount = indices.GetSize();
for (UPInt revIndex = 0; revIndex < indexCount/2; revIndex++)
{
unsigned short itemp = indices[revIndex];
indices[revIndex] = indices[indexCount - revIndex - 1];
indices[indexCount - revIndex - 1] = itemp;
}
delete vertices;
delete normals;
delete diffuseUVs;
delete lightmapUVs;
pScene->World.Add(Models[i]);
pScene->Models.PushBack(Models[i]);
pXmlModel = pXmlModel->NextSiblingElement("model");
}
OVR_DEBUG_LOG(("Done."));
//load the collision models
OVR_DEBUG_LOG(("Loading collision models... "));
XMLElement* pXmlCollisionModel = pXmlDocument->FirstChildElement("scene")->FirstChildElement("collisionModels");
if (pXmlCollisionModel)
{
pXmlCollisionModel->QueryIntAttribute("count", &collisionModelCount);
pXmlCollisionModel = pXmlCollisionModel->FirstChildElement("collisionModel");
}
XMLElement* pXmlPlane = NULL;
for(int i = 0; i < collisionModelCount; ++i)
{
Ptr<CollisionModel> cm = *new CollisionModel();
int planeCount = 0;
pXmlCollisionModel->QueryIntAttribute("planeCount", &planeCount);
pXmlPlane = pXmlCollisionModel->FirstChildElement("plane");
for(int j = 0; j < planeCount; ++j)
{
Vector3f norm;
pXmlPlane->QueryFloatAttribute("nx", &norm.x);
pXmlPlane->QueryFloatAttribute("ny", &norm.y);
pXmlPlane->QueryFloatAttribute("nz", &norm.z);
float D;
pXmlPlane->QueryFloatAttribute("d", &D);
D -= 0.5f;
Planef p(norm.z, norm.y, norm.x * -1.0f, D);
cm->Add(p);
pXmlPlane = pXmlPlane->NextSiblingElement("plane");
}
pCollisions->PushBack(cm);
pXmlCollisionModel = pXmlCollisionModel->NextSiblingElement("collisionModel");
}
OVR_DEBUG_LOG(("done."));
//load the ground collision models
OVR_DEBUG_LOG(("Loading ground collision models..."));
pXmlCollisionModel = pXmlDocument->FirstChildElement("scene")->FirstChildElement("groundCollisionModels");
if (pXmlCollisionModel)
{
pXmlCollisionModel->QueryIntAttribute("count", &groundCollisionModelCount);
pXmlCollisionModel = pXmlCollisionModel->FirstChildElement("collisionModel");
}
pXmlPlane = NULL;
for(int i = 0; i < groundCollisionModelCount; ++i)
{
Ptr<CollisionModel> cm = *new CollisionModel();
int planeCount = 0;
pXmlCollisionModel->QueryIntAttribute("planeCount", &planeCount);
pXmlPlane = pXmlCollisionModel->FirstChildElement("plane");
for(int j = 0; j < planeCount; ++j)
{
Vector3f norm;
pXmlPlane->QueryFloatAttribute("nx", &norm.x);
pXmlPlane->QueryFloatAttribute("ny", &norm.y);
pXmlPlane->QueryFloatAttribute("nz", &norm.z);
float D;
pXmlPlane->QueryFloatAttribute("d", &D);
Planef p(norm.z, norm.y, norm.x * -1.0f, D);
cm->Add(p);
pXmlPlane = pXmlPlane->NextSiblingElement("plane");
}
pGroundCollisions->PushBack(cm);
pXmlCollisionModel = pXmlCollisionModel->NextSiblingElement("collisionModel");
}
OVR_DEBUG_LOG(("done."));
return true;
}
