Render To Texture only color, no texture

Kurt-olsson · 2012-10-16T15:44:34

I am trying to render my scene to a texture, and then use that texture to map a cube in my scene. (like portal type hehe) This is My FrameMethod that first render to Texture and then my scene. [source lang="cpp"]void RenderFrame(void) { RenderToTexture(); // 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); RenderScene(); // switch the back buffer and the front buffer swapchain->Present(0, 0); }[/source] This is my Render To Texture Function [source lang="cpp"]void RenderToTexture() { m_RenderTexture.SetRenderTarget(devcon, zbuffer); //Clear the render to texture background to blue so we can differentiate it from the rest of the normal scene. // Clear the render to texture. m_RenderTexture.ClearRenderTarget(devcon, zbuffer, 0.0f, 1.0f, 0.0f, 1.0f); // Reset the render target back to the original back buffer and not the render to texture anymore. RenderScene(); // Render the scene now and it will draw to the render to texture instead of the back buffer. // set the render target as the back buffer devcon->OMSetRenderTargets(1, &backbuffer, zbuffer); }[/source] And this is my function to render my scene [source lang="cpp"]void RenderScene(void) { D3DXMATRIX matView, matProjection, matFinal; // create a view matrix D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3(0.0f, 3.0f, 15.0f), // 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 // set the various states devcon->RSSetState(pRS); devcon->PSSetSamplers(0, 1, &pSS); devcon->OMSetBlendState(BS_NO_ALPHA, 0, 0xffffffff); m_model_level.CopyAndSetBuffers(devcon); m_texture_shader.Render(dev,devcon,matView,matProjection,m_model_level.GetIndexCount(),true,pTexture); devcon->OMSetBlendState(BS_ALPHA, 0, 0xffffffff); m_model_cube.SlideUp(); m_model_cube.CopyAndSetBuffers(devcon); m_color_shader.Render(dev,devcon,matView,matProjection,m_model_cube.GetIndexCount(),true); devcon->OMSetBlendState(BS_NO_ALPHA, 0, 0xffffffff); m_model_cube.CopyAndSetBuffers(devcon); m_texture_shader.Render(dev,devcon,matView,matProjection,m_model_cube.GetIndexCount(),true,m_RenderTexture.GetShaderResourceView()); }[/source] the problem is that i get the color of my RenderToTexture->Clear but no texture is displayed. Is there a quick way of seeing how the texture looks like? can i save it to disk like a screenshot?

Graphics and GPU Programming Programming

Started by Kurt-olsson October 10, 2012 05:58 PM

9 comments, last by RythBlade 11 years, 6 months ago

RythBlade

152

October 16, 2012 03:44 PM

The difference between those two flags is that:

DXGI_FORMAT_D32_FLOAT specifies a depth buffer where the depth is stored as a 32-bit floating point value.

DXGI_FORMAT_D24_UNORM_S8_UINT specifies that the depth buffer is stored as a 24-bit floating point value. The remaining 8 bits (the _S8_UINT section) specifies the stencil test value is stored as an 8-bit unsigned integer.
You'll need to have another look through your set up of the depth-stencil test and how you create your graphics device and back buffer to ensure you've got depth testing AND stencil testing enabled along with the back face culling.

These are some good tutorials with excellent explanation of the parameters etc that should help you get to grips with setting this stuff up:
http://www.directxtutorial.com/Tutorial11/tutorials.aspx
This one is also a more complete example but a bit harder to follow.
http://www.rastertek.com/tutdx11.html

Hope this helps!

I've got a new blog!! I post details of my projects, useful things I find around and about the place and some tutorials on various technologies I'm experimenting with.

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