[Directx11][C++] Help with hardware instancing I'm a total beginner with Directx/3D programming. I need help with implementing hardware instancing on Directx 11. I'm trying to render multiple cubes on the screen, to create some sort of Minecraft-esque voxel engine. The problem is, I don't know where to start to achieve this. This is how my "render frame" function looks: void RenderFrame(void) { D3DXMATRIX matView, matProjection; D3DXMATRIX matFinal; // create a view matrix D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3(0.0f, 9.0f, 24.0f), // the camera position &D3DXVECTOR3(0.0f, 0.0f, 0.0f), // the look-at position &D3DXVECTOR3(0.0f, 1.0f, 0.0f)); // the up direction // create a projection matrix D3DXMatrixPerspectiveFovLH(&matProjection, (FLOAT)D3DXToRadian(45), // field of view (FLOAT)SCREEN_WIDTH / (FLOAT)SCREEN_HEIGHT, // aspect ratio 1.0f, // near view-plane 100.0f); // far view-plane // create the final transform matFinal = matView * matProjection; // clear the back buffer to a deep blue devcon->ClearRenderTargetView(backbuffer, D3DXCOLOR(0.0f, 0.2f, 0.4f, 1.0f)); // clear the depth buffer devcon->ClearDepthStencilView(zbuffer, D3D11_CLEAR_DEPTH, 1.0f, 0); // select which vertex buffer to display UINT stride = sizeof(VERTEX); UINT offset = 0; devcon->IASetVertexBuffers(0, 1, &pVBuffer, &stride, &offset); devcon->IASetIndexBuffer(pIBuffer, DXGI_FORMAT_R32_UINT, 0); // select which primtive type we are using devcon->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); // draw the Hypercraft devcon->UpdateSubresource(pCBuffer, 0, 0, &matFinal, 0, 0); devcon->DrawIndexed(24, 0, 0); // switch the back buffer and the front buffer swapchain->Present(0, 0); } Notice that there's a single vertex buffer containing the verteces of a cube, and index buffer containing its indeces. I want to render many (5000+) cubes on the screen at once on a single draw call, without performance issues, so I know instancing is the way to go, but I don't know how to implement it in my code. What changes do I need to do to my code in order to display multiple instances of the cube? Thanks in advance! https://ift.tt/eA8V8J

I'm a total beginner with Directx/3D programming. I need help with implementing hardware instancing on Directx 11. I'm trying to render multiple cubes on the screen, to create some sort of Minecraft-esque voxel engine. The problem is, I don't know where to start to achieve this. This is how my "render frame" function looks: void RenderFrame(void) { D3DXMATRIX matView, matProjection; D3DXMATRIX matFinal; // create a view matrix D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3(0.0f, 9.0f, 24.0f), // the camera position &D3DXVECTOR3(0.0f, 0.0f, 0.0f), // the look-at position &D3DXVECTOR3(0.0f, 1.0f, 0.0f)); // the up direction // create a projection matrix D3DXMatrixPerspectiveFovLH(&matProjection, (FLOAT)D3DXToRadian(45), // field of view (FLOAT)SCREEN_WIDTH / (FLOAT)SCREEN_HEIGHT, // aspect ratio 1.0f, // near view-plane 100.0f); // far view-plane // create the final transform matFinal = matView * matProjection; // clear the back buffer to a deep blue devcon->ClearRenderTargetView(backbuffer, D3DXCOLOR(0.0f, 0.2f, 0.4f, 1.0f)); // clear the depth buffer devcon->ClearDepthStencilView(zbuffer, D3D11_CLEAR_DEPTH, 1.0f, 0); // select which vertex buffer to display UINT stride = sizeof(VERTEX); UINT offset = 0; devcon->IASetVertexBuffers(0, 1, &pVBuffer, &stride, &offset); devcon->IASetIndexBuffer(pIBuffer, DXGI_FORMAT_R32_UINT, 0); // select which primtive type we are using devcon->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); // draw the Hypercraft devcon->UpdateSubresource(pCBuffer, 0, 0, &matFinal, 0, 0); devcon->DrawIndexed(24, 0, 0); // switch the back buffer and the front buffer swapchain->Present(0, 0); } Notice that there's a single vertex buffer containing the verteces of a cube, and index buffer containing its indeces. I want to render many (5000+) cubes on the screen at once on a single draw call, without performance issues, so I know instancing is the way to go, but I don't know how to implement it in my code. What changes do I need to do to my code in order to display multiple instances of the cube? Thanks in advance!

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