Blting DX9 textures to GDI, editing, and blting back

Scott · 2014-07-11T20:02:10

I'm looking for info on directly editing height and splat map data. My initial thought was that GDI with it's premade brushes would be an asset. So I set about learning what i needed from GDI to get the DXTexture into an HDC for use in a window.I've used BltBit which copies the entire Pixels RGB data from the dx surface into the HDC of my window. I would prefer to copy a single SRC channel ( R,G,B,or A for the splat layers(1-4)), leaving the rest of the DST bitmap black. After a brush has affected the bitmap, I intend to copy the single channel back to the initial DXTexture, which is used as a splat map in my terrain viewer(hopefully editor) Another thought was skipping GDI directly, and and implementing brushes in DX(unless they exist in an area i'm not familiar with) using pixel shaders, and modifying textures directly that way. I'd appreciate a nudge in the right direction, if anyone has a spare moment.

Graphics and GPU Programming Programming

Started by Burnt_Fyr July 07, 2014 01:31 AM

9 comments, last by Burnt_Fyr 9 years, 9 months ago

Burnt_Fyr

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July 11, 2014 08:02 PM

Ok so your 1-4 are the same as what i thought, other than the subregions you mention, which i assume is just to save bandwith.

I'm not limited to dx9, but it is the most familiar to me, as the majority of my practice been limited to dx9 due to an old dirt bag computer that i used. When I get tired or stuck with new techniques I work on refactoring and mirroring the dx9 stuff i have done with dx11 and ogl.

Blting DX9 textures to GDI, editing, and blting back

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Blting DX9 textures to GDI, editing, and blting back

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