sebf

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	1,204 reputation	bio	website		visits	member for	2 years, 3 months
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Nov 29	comment	Why can I not map a dynamic texture in D3D? Thank you for your answer, I understand now. I made a mistake in my original question, but it applies entirely still. I will use an intermediate buffer and CopySubresourceRegion() to update my texture, as I assume that since the GPU will process these calls 'serially' the race condition no longer applies?
Nov 29	accepted	Why can I not map a dynamic texture in D3D?
Nov 29	revised	Why can I not map a dynamic texture in D3D? added 172 characters in body
Nov 28	asked	Why can I not map a dynamic texture in D3D?
Oct 24	comment	Can someone explain the (reasons for the) implications of colum vs row major in multiplication/concatenation? @Patrick, Thanks, that site looks great!
Oct 24	accepted	Can someone explain the (reasons for the) implications of colum vs row major in multiplication/concatenation?
Oct 24	comment	Can someone explain the (reasons for the) implications of colum vs row major in multiplication/concatenation? @Nicol, Everything is starting to click now. There was confusion due to a disconnect between what I was seeing and what I thought I ought to be, as my library (taken from Axiom) declares column-major (and all the multiplication orders etc conform to this) yet the memory layout is row-major (judging by translation indices and the fact HLSL works correctly using the non-transposed matrix); I see now however how this is not in conflict. Thank you very much!
Oct 23	revised	Can someone explain the (reasons for the) implications of colum vs row major in multiplication/concatenation? added 210 characters in body
Oct 23	revised	Can someone explain the (reasons for the) implications of colum vs row major in multiplication/concatenation? edited title
Oct 23	asked	Can someone explain the (reasons for the) implications of colum vs row major in multiplication/concatenation?
Oct 13	awarded	Nice Question
Oct 8	accepted	How do I create a CPU read/write buffer in SlimDX (what are the legal combinations of Usage and CPUAccess flags)?
Oct 8	comment	How do I create a CPU read/write buffer in SlimDX (what are the legal combinations of Usage and CPUAccess flags)? Thank you Nathan, that makes the use of the Usage setting much clearer. As for the reason, it was more a 'wood-for-trees' case - the SlimDX documentation for MapMode hinted at ReadWrite capabilities so I was preoccupied with why I couldn't use them, currently there is no case in which I would require a read/write buffer.
Oct 8	revised	How do I create a CPU read/write buffer in SlimDX (what are the legal combinations of Usage and CPUAccess flags)? edited title
Oct 8	asked	How do I create a CPU read/write buffer in SlimDX (what are the legal combinations of Usage and CPUAccess flags)?
Oct 4	answered	How should I go about abstracting away the graphics device?
Oct 2	comment	What does the graphics card do with the fourth element of a vector as the final position? @FxIII, I was not able to reproduce that exactly but you are right that was an incorrect blanket statement made in my original post, after some more experimentation I have updated it.
Oct 2	comment	What does the graphics card do with the fourth element of a vector as the final position? Thank you! I am seeing more and more the necessity of using the fourth component in any truely useful representation of an entity in 3D space.
Oct 2	comment	What does the graphics card do with the fourth element of a vector as the final position? It was very hard to pick one answer to this question, as all have contributed to the understanding of how the the relationship of the fourth component is used and why it is needed. Your explanation of euclidean and affine space is very helpful, I certainly would not have understood it as I do now without that level of detail. Thank you very much!
Oct 2	accepted	What does the graphics card do with the fourth element of a vector as the final position?