DrawIndexedInstanced（）影響其他幾何

我想繪製一些在彼此頂部的二維正方形。DrawIndexedInstanced（）影響其他幾何

第一方是800×600像素，以0爲中心，0 第二組方格的各30×30個像素，移動圍繞在所述第一2D方形

的頂部對於第一方，我我試圖使用簡單的索引幾何來呈現它。

我試過渲染每個單獨的，它的工作原理。但是，當我試圖同時渲染兩個圖形時，即使我首先渲染第一個方塊，但第二個方塊的實例似乎會通過移動800 x 600方塊來匹配實例緩衝區中的第一個實例正方形，即使我從電路板切換到每個方塊時通過新的頂點緩衝區。以下是我的渲染代碼：

void Render() 
{ 
    FLOAT color[] = {0.3f, 0.4f, 0.5f, 1.0f}; 

    m_d3dImmediateContext->ClearRenderTargetView(m_d3dRenderTargetView, color); 
    m_d3dImmediateContext->ClearDepthStencilView(m_d3dDepthStencilView, D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0); 

    m_d3dImmediateContext->IASetInputLayout(m_d3dInputLayout); 
    m_d3dImmediateContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); 

    UINT stride = sizeof(Vertex); 
    UINT offset = 0; 

    m_d3dImmediateContext->IASetVertexBuffers(0, 1, &m_d3dBoardVBuffer, &stride, &offset); 
    m_d3dImmediateContext->IASetIndexBuffer(m_d3dIBuffer, DXGI_FORMAT_R32_UINT, 0); 

    m_d3dImmediateContext->VSSetShader(m_d3dVShader, NULL, 0); 
    m_d3dImmediateContext->PSSetShader(m_d3dPShader, NULL, 0); 

    m_d3dImmediateContext->VSSetConstantBuffers(0, 1, &m_d3dCBPerObject); 

    m_d3dImmediateContext->PSSetSamplers(0, 1, &m_samLinear); 
    m_d3dImmediateContext->PSSetShaderResources(0, 1, &m_d3dBoardSRV); 

    XMMATRIX worldViewProj = m_world * m_view * m_proj; 
    XMStoreFloat4x4(&m_cbPerObject.WorldViewProj, worldViewProj); 

    D3D11_MAPPED_SUBRESOURCE mappedResource; 
    m_d3dImmediateContext->Map(m_d3dCBPerObject, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource); 
    CopyMemory(mappedResource.pData, &m_cbPerObject, sizeof(struct CBPerObject)); 
    m_d3dImmediateContext->Unmap(m_d3dCBPerObject, 0); 

    m_d3dImmediateContext->DrawIndexed(m_indexCount, 0, 0); 

    UINT blockStride[2] = {sizeof(Vertex), sizeof(Instance)}; 
    UINT blockOffset[2] = {0, 0}; 

    ID3D11Buffer *vBuffers[2] = {m_d3dBlockVBuffer, m_d3dBlockInstVBuffer}; 

    m_d3dImmediateContext->IASetVertexBuffers(0, 2, vBuffers, blockStride, blockOffset); 
    m_d3dImmediateContext->IASetIndexBuffer(m_d3dIBuffer, DXGI_FORMAT_R32_UINT, 0); 

    m_d3dImmediateContext->VSSetShader(m_d3dVShader, NULL, 0); 
    m_d3dImmediateContext->PSSetShader(m_d3dPShader, NULL, 0); 

    m_d3dImmediateContext->VSSetConstantBuffers(0, 1, &m_d3dCBPerObject); 

    m_d3dImmediateContext->PSSetSamplers(0, 1, &m_samLinear); 
    m_d3dImmediateContext->PSSetShaderResources(0, 1, &m_d3dBlockSRV); 

    worldViewProj = m_world * m_view * m_proj; 
    XMStoreFloat4x4(&m_cbPerObject.WorldViewProj, worldViewProj); 

    D3D11_MAPPED_SUBRESOURCE mappedResource2; 
    m_d3dImmediateContext->Map(m_d3dCBPerObject, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource2); 
    CopyMemory(mappedResource2.pData, &m_cbPerObject, sizeof(struct CBPerObject)); 
    m_d3dImmediateContext->Unmap(m_d3dCBPerObject, 0); 

    m_d3dImmediateContext->DrawIndexedInstanced(m_indexCount, 4, 0, 0, 0); 

    m_d3dSwapChain->Present(0, 0); 
}

我在做一些根本不正確的事情嗎？董事會是800×600平方米，塊是30×30平方米。在主板上，我想基本渲染多個方塊。

來源

2013-02-24 James Newton

您沒有設置第二個頂點緩衝區的輸入佈局。你在渲染m_d3dBoardVBuffer之前設置它，但是在渲染vBuffers之前你不要設置一個唯一的。

來源

2013-02-25 02:34:47 alanw

DrawIndexedInstanced（）影響其他幾何

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