Pixel operation | GameDev.net

Original Post

Jul 14, 2003 at 1:29 PM

How would you go about reading and writing pixels to the screen in DirectX? How do you read and write pixels from a surface/texture to a surface/texture? I''ve looked, but I can''t seem to come up with anything. Thanks! -Moquan

Moquan

Author

Moquan

Jul 14, 2003 at 2:45 PM

If it''s too difficult to explain, even a tutorial would be greatly appreciated. Thanks.

-Moquan

Nypyren

1,001

Nypyren

Jul 15, 2003 at 4:27 AM

Most surface classes have a "lock" function that either gives you access to a byte array or fills an array for you. Then you modify the array and finally unlock.

Muhammad Haggag

156

Muhammad Haggag

Jul 15, 2003 at 4:33 AM

You can also render D3DPT_POINTLIST''s using DrawPrimitive with [transformed and lit vertices] or [untransformed vertices with orthogonal projection].
You can do that to the backbuffer or to a texture (if your card supports render to texture)

Peace,
Muhammad Haggag

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