void ParticleGenerator::Update(Transform eTransform, float dt, float tt) {
ResourceManager* rManager = ResourceManager::Instance();
ID3D11DeviceContext* deviceContext = rManager->GetDeviceContext();
UINT stride = sizeof(Particle);
UINT offset = 0;
generatorVS = dynamic_cast<SimpleVertexShader*>(rManager->GetShader("ParticleGeneratorVS"));
generatorGS = dynamic_cast<SimpleGeometryShader*>(rManager->GetShader("ParticleGeneratorGS"));
DirectX::XMMATRIX translationMat = DirectX::XMMatrixTranslation(position.x, position.y, position.z);
DirectX::XMMATRIX rotationMat = DirectX::XMMatrixRotationRollPitchYaw(eTransform.GetRotation().x * 2, eTransform.GetRotation().y * 2, eTransform.GetRotation().z * 2);
DirectX::XMFLOAT4X4 transformMat;
DirectX::XMStoreFloat4x4(&transformMat, DirectX::XMMatrixTranspose(translationMat * rotationMat));
DirectX::XMFLOAT3 finalPos = DirectX::XMFLOAT3(eTransform.GetTranslation().x + transformMat._14, eTransform.GetTranslation().y + transformMat._24, eTransform.GetTranslation().z + transformMat._34);
// Set constant variables
generatorGS->SetFloat("dt", dt);
generatorGS->SetFloat("tt", tt);
generatorGS->SetFloat3("generatorPos", finalPos);
generatorGS->SetFloat("spawnRate", spawnRate);
generatorGS->SetFloat("lifeTime", lifeTime);
generatorGS->SetSamplerState("randomSampler", rManager->GetSamplerState("trilinear"));
generatorGS->SetShaderResourceView("randomTexture", rManager->GetTexture("randomTexture"));
// Activate shaders
generatorVS->SetShader(true);
generatorGS->SetShader(true);
deviceContext->PSSetShader(0, 0, 0);
// Unbind vertex buffers (incase)
ID3D11Buffer* unset = 0;
UINT unsetStride = 0;
deviceContext->IASetVertexBuffers(0, 1, &unset, &stride, &offset);
deviceContext->IASetVertexBuffers(0, 1, &readBuff, &stride, &offset);
deviceContext->SOSetTargets(1, &writeBuff, &offset);
deviceContext->DrawAuto();
// Kill everything
SimpleGeometryShader::UnbindStreamOutStage(deviceContext);
deviceContext->GSSetShader(0, 0, 0);
SwapBuffers();
}
