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Direct3D texture after processing / copying

So I am trying to implement some Direct3D post processing and I am having problems with texture processing. Basically my program looks like this:

// Render scene to "scene_texture" (an HDR texture)...

...

device->SetRenderTarget(0, brightpass_surface);
device->SetTexture(0, scene_texture);
// Render "scene_texture" to "brightpass_texture" using full-screen quad.
// This involves passing the quad geometry through a brightpass shader.

...

device->SetRenderTarget(0, ldr_surface);
device->SetTexture(0, brightpass_texture);
// Render "brightpass_texture" to "ldr_surface" using full-screen quad...

I left some parts of b / c, there is a fair amount of code in there (I'm just trying to get the general idea). Unfortunately, the above results are on a blank screen. This is what I want:

  • Display scene in texture (HDR)
  • Repair this texture to the second texture THROUGH THE Brightpass PATTERN
  • Map the second texture to the visible LDR surface.

Note that if I change the last line above from

device->SetTexture(0, brightpass_texture);

to

device->SetTexture(0, scene_texture);

Then everything works. Note that I've tried skipping the shader label and just skipping the pixels, but that doesn't work either.

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3 answers


The problem was multisampling. In the structure, D3DPRESENT_PARAMS

I have enabled multisampling. You cannot map from one floating point texture to another floating point texture using the "full screen square" technique while multisampling is enabled.



Instead, I enabled multisampling in the scene's target render HDR ( scene_texture

) and disabled it in the frame PRESENT_PARAMS

. This is good because I only need multisampling to render the scene.

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Are you sure you created a shortcut_texture with a render flag?



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Does the debugging work do all the errors? How do you get ldr_surface?

What happens if you render your scene directly on ldr_surface and bypass all HDR footage? The thing is likely to be a little intense, but it should give you an idea ...

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