Controlling the individual pixels of a projector

I need to control the individual pixels of a projector (an Infocus IN3104) whose native resolution is 1024x768. I would like to know which subset of functions in C or an APL to do this either by:

1. Functions that control the individual pixels of the adapter (not the pixels of a window).

2. A pixel-perfect, 1:1 map from an image file (1024x728) to the adaptor set at the native resolution of the projector.

In a related question ([How can I edit individual pixels in a window?][1]) the answerer Caladain states "Things have come a bit from the old days of direct memory manipulation.". I feel I need to go back to that to achieve my goal.

I don't know enough of the "graphic pipeline" to know what API or software tool to use. I'm overwhelmed by the number of technologies when I search this topic. I program in R, which easily interfaces to C, but would welcome suggestions of subsets of functions in OpenGL or C++ or ..... 开发者_运维知识库any other technology?

Or even an full blown application (rendering) which will map without applying a transformation.

For example even MS paint has the >VIEW>Bitmap but I get some transformation applied and I don't get pixel perfect rendering. This projector has DisplayLink digital input and I've also tried to tweek the timing parameters when using the VESA inputs and I don't think the transformation happens in the projector. In any case, using MS paint would not be flexible enough for me.

Platform: Linux or Windows.

I don't see a reason why a full-screen window, e.g. using SDL, wouldn't work. Normal bitmapped graphics is always 1:1, there shouldn't be any weird scaling going on behind your back for a full-screen:ed window.

Since SDL is portable, you should be able to run the same code in Windows or Linux (or any other supported platform).

The usual approach to this problem on current systems is:

1. Set graphics card to desired resolution
2. Create borderless full screen window
3. Draw whatever you want

There's really not much to gain from a "low level access", although it were certainly possible.