void SuzanneDX::RenderShadowMaps()
{
D3D11_TEXTURE2D_DESC shadowMapDesc;
ZeroMemory(&shadowMapDesc, sizeof(shadowMapDesc));
shadowMapDesc.Width = SHADOW_RESOLUTION;
shadowMapDesc.Height = SHADOW_RESOLUTION;
shadowMapDesc.MipLevels = 1;
shadowMapDesc.ArraySize = 1;
shadowMapDesc.Format = DXGI_FORMAT_R24G8_TYPELESS;
shadowMapDesc.SampleDesc.Count = 1;
shadowMapDesc.SampleDesc.Quality = 0;
shadowMapDesc.Usage = D3D11_USAGE_DEFAULT;
shadowMapDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE;
shadowMapDesc.CPUAccessFlags = 0;
shadowMapDesc.MiscFlags = 0;
D3D11_DEPTH_STENCIL_VIEW_DESC shadowMapDsvDesc;
ZeroMemory(&shadowMapDsvDesc, sizeof(shadowMapDsvDesc));
shadowMapDsvDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
shadowMapDsvDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
shadowMapDsvDesc.Texture2D.MipSlice = 0;
D3D11_SHADER_RESOURCE_VIEW_DESC shadowMapResourceDesc;
ZeroMemory(&shadowMapResourceDesc, sizeof(shadowMapResourceDesc));
shadowMapResourceDesc.Format = DXGI_FORMAT_R24_UNORM_X8_TYPELESS;
shadowMapResourceDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
shadowMapResourceDesc.Texture2D.MipLevels = 1;
shadowMapResourceDesc.Texture2D.MostDetailedMip = 0;
D3D11_VIEWPORT shadowMapViewport;
shadowMapViewport.Width = (FLOAT)SHADOW_RESOLUTION;
shadowMapViewport.Height = (FLOAT)SHADOW_RESOLUTION;
shadowMapViewport.MinDepth = 0.0f;
shadowMapViewport.MaxDepth = 1.0f;
shadowMapViewport.TopLeftX = 0;
shadowMapViewport.TopLeftY = 0;
mDeviceContext->RSSetViewports(1, &shadowMapViewport);
XMMATRIX shadowViewProjectionMatrices[NUMBER_OF_LIGHTS];
for (int i = 0; i < NUMBER_OF_LIGHTS; ++i)
{
ID3D11Texture2D* shadowMap;
mDevice->CreateTexture2D(&shadowMapDesc, NULL, &shadowMap);
ID3D11DepthStencilView* shadowMapDsv;
mDevice->CreateDepthStencilView(shadowMap, &shadowMapDsvDesc, &shadowMapDsv);
mDevice->CreateShaderResourceView(shadowMap, &shadowMapResourceDesc, &shadowMapResources[i]);
mDeviceContext->OMSetRenderTargets(0, 0, shadowMapDsv);
mDeviceContext->ClearDepthStencilView(shadowMapDsv, D3D11_CLEAR_DEPTH, 1.0f, 0);
XMVECTOR lightInvDir = XMVector3Normalize(XMVectorSet(lighting.lights[i].position.x, lighting.lights[i].position.y, lighting.lights[i].position.z, 1.0f));
XMMATRIX shadowProjectionMatrix = XMMatrixOrthographicRH(20, 20, -10, 20);
XMMATRIX shadowViewMatrix = XMMatrixLookAtRH(lightInvDir, XMVectorSet(0, 0, 0, 1), XMVectorSet(0, 1, 0, 1));
shadowViewProjectionMatrices[i] = shadowViewMatrix * shadowProjectionMatrix;
ID3D11Buffer* shadowViewProjectionMatrixBuffer = DXUtil::CreateMatrixBuffer(mDevice, shadowViewProjectionMatrices[i]);
mDeviceContext->VSSetConstantBuffers(shadowViewProjectionMatrixBufferSlot, 1, &shadowViewProjectionMatrixBuffer);
UINT stride = sizeof(Vertex);
UINT offset = 0;
for (ModelDX model : models)
{
mDeviceContext->IASetVertexBuffers(0, 1, &model.vertexBuffer, &stride, &offset);
mDeviceContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
mDeviceContext->IASetInputLayout(model.inputLayout);
mDeviceContext->VSSetShader(shadowVertexShader, 0, 0);
mDeviceContext->PSSetShader(shadowPixelShader, 0, 0);
mDeviceContext->VSSetConstantBuffers(modelMatrixBufferSlot, 1, &model.modelMatrixBuffer);
mDeviceContext->Draw(model.vertexCount, 0);
}
shadowMap->Release();
shadowMapDsv->Release();
shadowViewProjectionMatrixBuffer->Release();
}
mDeviceContext->OMSetRenderTargets(1, &mRenderTargetView, mDepthStencilView);
mDeviceContext->RSSetViewports(1, &mViewport);
D3D11_BUFFER_DESC matrixDesc;
ZeroMemory(&matrixDesc, sizeof(matrixDesc));
matrixDesc.ByteWidth = sizeof(XMMATRIX) * NUMBER_OF_LIGHTS;
matrixDesc.Usage = D3D11_USAGE_DEFAULT;
matrixDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
matrixDesc.CPUAccessFlags = 0;
D3D11_SUBRESOURCE_DATA matrixData;
ZeroMemory(&matrixData, sizeof(matrixData));
matrixData.pSysMem = &shadowViewProjectionMatrices[0];
ID3D11Buffer* matrixBuffer;
mDevice->CreateBuffer(&matrixDesc, &matrixData, &matrixBuffer);
mDeviceContext->VSSetConstantBuffers(shadowViewProjectionMatrixBufferSlot, 1, &matrixBuffer);
matrixBuffer->Release();
XMMATRIX biasMatrix = XMMatrixSet(
0.5, 0.0, 0.0, 0.0,
0.0, 0.5, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.5, 0.5, 0.0, 1.0
);
ID3D11Buffer* shadowBiasMatrixBuffer = DXUtil::CreateMatrixBuffer(mDevice, biasMatrix);
mDeviceContext->VSSetConstantBuffers(shadowBiasMatrixBufferSlot, 1, &shadowBiasMatrixBuffer);
shadowBiasMatrixBuffer->Release();
}
void Camera::GetOrthoProjMatrices(XMFLOAT4X4 *view, XMFLOAT4X4 *proj, float width, float height)
{
XMStoreFloat4x4(view, XMMatrixTranspose(XMMatrixLookAtRH(mEye, mAt, mUp)));
XMStoreFloat4x4(proj, XMMatrixTranspose(XMMatrixOrthographicRH(width, height, 0.01f, 125.0f)));
}
void GraphicCameraEntity::UpdateOrthogonal(std::shared_ptr<CameraEntity> obj)
{
XMMATRIX xmPrespective = XMMatrixOrthographicRH((float)this->Width, (float)this->Height,
this->NearZ, this->FarZ);
XMStoreFloat4x4(&this->Orthogonal, xmPrespective);
}
