From 5b988cd28e147b7d089640c938ff98285f78b1a0 Mon Sep 17 00:00:00 2001 From: TimothyLottes Date: Tue, 8 Nov 2016 23:02:11 -0500 Subject: [PATCH] Add files via upload --- 20090501.html | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 20090501.html diff --git a/20090501.html b/20090501.html new file mode 100644 index 0000000..d249323 --- /dev/null +++ b/20090501.html @@ -0,0 +1,29 @@ +
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20090501 - 32bpp HDR Blending Idea

+
+
The goal is to get 16-bit per channel HDR with only 32-bit per pixel and still have an additive blendable framebuffer.
+
+...
+
+If alpha is needed (for example doing particle blending), 
+then a different color channel decimation will be required such as this one,
+
+GA RA GA RA
+BA GA BA GA
+GA RA GA RA
+BA GA BA GA
+
+This is now much closer to the Bayer Grid seen on common digital cameras. 
+Remember to keep 2 greens per one blue and one red. 
+The result here is 1/4 area chrominance.
+
+NOT FOR OLDER HARDWARE
+======================
+Unfortunately this trick requires a render target format (16-bit dual channel) 
+  not available on a bunch of older hardware (like Geforce 7 series, PS3, etc). 
+Will work on 360 however using an 16-bit integer format.
+
+
+ + +