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MadVR: Ρυθμίσεις, Προβλήματα, FAQ [Part II]
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<blockquote data-quote="Emilot" data-source="post: 1057008496" data-attributes="member: 133"><p>Με την καινούρια έκδοση(0.87.3), όλα κομπλέ στην ATI.</p><p></p><p>Ενδιαφέροντα στοιχεία...απο το doom9.</p><p></p><p><strong><em>"DXVA2 decoding and deinterlacing outputs NV12 surfaces. Unfortunately pixel shaders can't use them directly. So madVR has to convert the NV12 surfaces somehow to make them pixel shader compatible. There are 3 different ways madVR can use to do that. Solution (1) is copyback (downloading the NV12 data to CPU RAM, then re-uploading it to GPU in a different format). Solution (2) is conversion/processing via OpenCL, introduced in v0.87.0. And solution (3) is a copy operation on the GPU, which can be lossless with AMD GPUs, but produces a slightly blurred chroma channel with NVidia and Intel GPUs. There's a trade-quality-for-performance option to switch between (1) and (3). And there's a new option in the "rendering -> general settings" to enable/disable (2)."</em></strong></p><p><strong><em></em></strong></p><p><strong><em>"NNEDI3 can only do exact 2.0x enlargements. Chroma upscaling happens to be exactly that. So NNEDI3 can serve as a full replacement for the other algorithms, when talking about chroma upscaling.</em></strong></p><p><strong><em></em></strong></p><p><strong><em>However, the image upscaling factor is very rarely exactly 2.0x. So NNEDI3 is almost never a full replacement algorithm for the other algorithms like Lanczos or Jinc, when talking about image upscaling. Let's imagine I made the image upscaling settings page the same as the chroma upscaling settings page is now. And let's imagine you selected NNEDI3 for image upscaling. Let's further imagine in your specific situation you'd need a 3.0x scaling factor. What should madVR do in that case? It could use NNEDI3 to upscale 2.0x or 4.0x, but not 3.0x. So what should it do? It's not clear. Because of that I cannot offer NNEDI3 as a full replacement algorithm in the image upscaling settings page."</em></strong></p><p></p><p>Φυσικά αν χρησιμοποιείτε LAV filters και DXVA, πρέπει να το βάλετε σε Copy - Back mode...</p></blockquote><p></p>
[QUOTE="Emilot, post: 1057008496, member: 133"] Με την καινούρια έκδοση(0.87.3), όλα κομπλέ στην ATI. Ενδιαφέροντα στοιχεία...απο το doom9. [B][I]"DXVA2 decoding and deinterlacing outputs NV12 surfaces. Unfortunately pixel shaders can't use them directly. So madVR has to convert the NV12 surfaces somehow to make them pixel shader compatible. There are 3 different ways madVR can use to do that. Solution (1) is copyback (downloading the NV12 data to CPU RAM, then re-uploading it to GPU in a different format). Solution (2) is conversion/processing via OpenCL, introduced in v0.87.0. And solution (3) is a copy operation on the GPU, which can be lossless with AMD GPUs, but produces a slightly blurred chroma channel with NVidia and Intel GPUs. There's a trade-quality-for-performance option to switch between (1) and (3). And there's a new option in the "rendering -> general settings" to enable/disable (2)."[/I][/B] [B][I] "NNEDI3 can only do exact 2.0x enlargements. Chroma upscaling happens to be exactly that. So NNEDI3 can serve as a full replacement for the other algorithms, when talking about chroma upscaling. However, the image upscaling factor is very rarely exactly 2.0x. So NNEDI3 is almost never a full replacement algorithm for the other algorithms like Lanczos or Jinc, when talking about image upscaling. Let's imagine I made the image upscaling settings page the same as the chroma upscaling settings page is now. And let's imagine you selected NNEDI3 for image upscaling. Let's further imagine in your specific situation you'd need a 3.0x scaling factor. What should madVR do in that case? It could use NNEDI3 to upscale 2.0x or 4.0x, but not 3.0x. So what should it do? It's not clear. Because of that I cannot offer NNEDI3 as a full replacement algorithm in the image upscaling settings page."[/I][/B] Φυσικά αν χρησιμοποιείτε LAV filters και DXVA, πρέπει να το βάλετε σε Copy - Back mode... [/QUOTE]
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