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add more Mesh code

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This commit is contained in:
lightling 2022-01-15 15:12:30 -05:00
parent e8a3dcf48d
commit f43baa8b22
Signed by: lightling
GPG key ID: 016F11E0AA296B67
2 changed files with 64 additions and 13 deletions
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55
Mesh.cpp
View file

@ -1,28 +1,77 @@
#include "Mesh.h"
using namespace DirectX;
Mesh::Mesh(Vertex* _vertices, int _vertexCount, unsigned int* _indices, int _indexCount, Microsoft::WRL::ComPtr<ID3D11Device> _device, Microsoft::WRL::ComPtr<ID3D11DeviceContext> _context)
{
// Create the VERTEX BUFFER description
D3D11_BUFFER_DESC vbd = {};
vbd.Usage = D3D11_USAGE_IMMUTABLE;
vbd.ByteWidth = sizeof(Vertex) * _vertexCount;
vbd.BindFlags = D3D11_BIND_VERTEX_BUFFER;
vbd.CPUAccessFlags = 0;
vbd.MiscFlags = 0;
vbd.StructureByteStride = 0;
// Create the proper struct to hold the initial vertex data
// - This is how we put the initial data into the buffer
D3D11_SUBRESOURCE_DATA initialVertexData = {};
initialVertexData.pSysMem = _vertices;
// Actually create the buffer with the initial data
_device->CreateBuffer(&vbd, &initialVertexData, bufferVertex.GetAddressOf());
// Create the INDEX BUFFER description
D3D11_BUFFER_DESC ibd = {};
ibd.Usage = D3D11_USAGE_IMMUTABLE;
ibd.ByteWidth = sizeof(unsigned int) * _indexCount;
ibd.BindFlags = D3D11_BIND_INDEX_BUFFER;
ibd.CPUAccessFlags = 0;
ibd.MiscFlags = 0;
ibd.StructureByteStride = 0;
// Create the proper struct to hold the initial index data
D3D11_SUBRESOURCE_DATA initialIndexData = {};
initialIndexData.pSysMem = _indices;
countIndex = _indexCount;
// Create the buffer with the initial data
_device->CreateBuffer(&ibd, &initialIndexData, bufferIndex.GetAddressOf());
deviceContext = _context;
}
Mesh::~Mesh()
{
// Because this is using ComPtr, destructor for now is unnecessary
}
void Mesh::Draw()
{
// Set buffers in the input assembler
UINT stride = sizeof(Vertex);
UINT offset = 0;
deviceContext->IASetVertexBuffers(0, 1, bufferVertex.GetAddressOf(), &stride, &offset);
deviceContext->IASetIndexBuffer(bufferIndex.Get(), DXGI_FORMAT_R32_UINT, 0);
// Do the actual drawing
deviceContext->DrawIndexed(
countIndex, // The number of indices to use (we could draw a subset if we wanted)
0, // Offset to the first index we want to use
0); // Offset to add to each index when looking up vertices
}
Microsoft::WRL::ComPtr<ID3D11Buffer>* Mesh::GetVertexBuffer()
{
return nullptr;
return &bufferVertex;
}
Microsoft::WRL::ComPtr<ID3D11Buffer>* Mesh::GetIndexBuffer()
{
return nullptr;
return &bufferIndex;
}
int Mesh::GetIndexCount()
{
return 0;
return countIndex;
}

22
Mesh.h
View file

@ -7,20 +7,22 @@
class Mesh
{
private:
Microsoft::WRL::ComPtr<ID3D11Buffer> bufferVertex;
Microsoft::WRL::ComPtr<ID3D11Buffer> bufferIndex;
Microsoft::WRL::ComPtr<ID3D11Buffer> bufferVertex;
Microsoft::WRL::ComPtr<ID3D11Buffer> bufferIndex;
Microsoft::WRL::ComPtr<ID3D11DeviceContext> deviceContext;
int countIndex;
public:
Mesh(
Vertex* _vertices,
int _vertexCount,
unsigned int* _indices,
int _indexCount,
Vertex* _vertices,
int _vertexCount,
unsigned int* _indices,
int _indexCount,
Microsoft::WRL::ComPtr<ID3D11Device> _device,
Microsoft::WRL::ComPtr<ID3D11DeviceContext> _context);
~Mesh();
void Draw();
Microsoft::WRL::ComPtr<ID3D11Buffer>* GetVertexBuffer();
Microsoft::WRL::ComPtr<ID3D11Buffer>* GetIndexBuffer();
int GetIndexCount();
void Draw();
Microsoft::WRL::ComPtr<ID3D11Buffer>* GetVertexBuffer();
Microsoft::WRL::ComPtr<ID3D11Buffer>* GetIndexBuffer();
int GetIndexCount();
};