void SDFShadowDemo::BuildQuad()
{
// create a screen quad
m_pQuad = GeometryPtr(new GeometryDX11());
const i32 NumVertexOfQuad = 4;
// create the vertex element streams
VertexElementDX11* pPositions = new VertexElementDX11(3, NumVertexOfQuad);
pPositions->m_SemanticName = VertexElementDX11::PositionSemantic;
pPositions->m_uiSemanticIndex = 0;
pPositions->m_Format = DXGI_FORMAT_R32G32B32_FLOAT;
pPositions->m_uiInputSlot = 0;
pPositions->m_uiAlignedByteOffset = 0;
pPositions->m_InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
pPositions->m_uiInstanceDataStepRate = 0;
VertexElementDX11* pColors = new VertexElementDX11(4, NumVertexOfQuad);
pColors->m_SemanticName = VertexElementDX11::ColorSemantic;
pColors->m_uiSemanticIndex = 0;
pColors->m_Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
pColors->m_uiInputSlot = 0;
pColors->m_uiAlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT;
pColors->m_InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
pColors->m_uiInstanceDataStepRate = 0;
m_pQuad->AddElement(pPositions);
m_pQuad->AddElement(pColors);
*pPositions->Get3f(0) = Vector3f(-1.0f, +1.0f, 0.0f);
*pPositions->Get3f(1) = Vector3f(+1.0f, +1.0f, 0.0f);
*pPositions->Get3f(2) = Vector3f(-1.0f, -1.0f, 0.0f);
*pPositions->Get3f(3) = Vector3f(+1.0f, -1.0f, 0.0f);
*pColors->Get4f(0) = Colors::White;
*pColors->Get4f(1) = Colors::White;
*pColors->Get4f(2) = Colors::White;
*pColors->Get4f(3) = Colors::White;
m_pQuad->AddFace(TriangleIndices(0, 1, 2));
m_pQuad->AddFace(TriangleIndices(1, 3, 2));
m_pQuad->LoadToBuffers();
}
void SDFShadowDemo::LoadGeometry()
{
// load mesh file
Assimp::Importer imp;
const aiScene* pScene = nullptr;
const std::wstring meshFileNameW = L"testScene.obj";
const std::wstring meshFilePathW = FileSystem::getSingleton().GetModelsFolder();
const std::string meshFileFullPath = TextHelper::ToAscii(meshFilePathW + meshFileNameW);
pScene = imp.ReadFile(meshFileFullPath, aiProcess_MakeLeftHanded | aiProcess_Triangulate | aiProcess_FlipWindingOrder);
if (!pScene)
{
return;
}
auto count = pScene->mNumMeshes;
if (count < 1)
return;
// load a scene into GeometryDX11
for (auto id = 0U; id < count; ++id)
{
auto pMesh = pScene->mMeshes[id];
auto pGeometry = GeometryPtr(new GeometryDX11());
const i32 NumVertexOfBox = pMesh->mNumVertices;
// create the vertex element streams
VertexElementDX11* pPositions = new VertexElementDX11(3, NumVertexOfBox);
pPositions->m_SemanticName = VertexElementDX11::PositionSemantic;
pPositions->m_uiSemanticIndex = 0;
pPositions->m_Format = DXGI_FORMAT_R32G32B32_FLOAT;
pPositions->m_uiInputSlot = 0;
pPositions->m_uiAlignedByteOffset = 0;
pPositions->m_InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
pPositions->m_uiInstanceDataStepRate = 0;
VertexElementDX11* pColors = new VertexElementDX11(4, NumVertexOfBox);
pColors->m_SemanticName = VertexElementDX11::ColorSemantic;
pColors->m_uiSemanticIndex = 0;
pColors->m_Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
pColors->m_uiInputSlot = 0;
pColors->m_uiAlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT;
pColors->m_InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
pColors->m_uiInstanceDataStepRate = 0;
pGeometry->AddElement(pPositions);
pGeometry->AddElement(pColors);
for (auto i = 0; i < NumVertexOfBox; ++i)
{
aiVector3D pos = pMesh->mVertices[i];
*pPositions->Get3f(i) = Vector3f(pos.x, pos.y, pos.z);
*pColors->Get4f(i) = Colors::Green;
}
for (auto i = 0U; i < pMesh->mNumFaces; ++i)
{
aiFace face = pMesh->mFaces[i];
assert(face.mNumIndices == 3);
pGeometry->AddFace(TriangleIndices(face.mIndices[0], face.mIndices[1], face.mIndices[2]));
}
pGeometry->LoadToBuffers();
m_vGeoms.push_back(pGeometry);
}
count = pScene->mRootNode->mNumChildren;
for (auto i = 0U; i < count; ++i)
{
Matrix4f mat(true);
aiNode* node = pScene->mRootNode->mChildren[i];
for (auto j = 0; j < 4; ++j)
{
aiMatrix4x4 trans = node->mTransformation;
auto ptr = trans[j];
mat(j, 0) = ptr[0];
mat(j, 1) = ptr[1];
mat(j, 2) = ptr[2];
mat(j, 3) = ptr[3];
}
mat = mat.Transpose();
m_vMats.push_back(mat);
}
SetupPipeline();
}