CODEWITHSUNDEEP
graphics3ddrawing2drendering
OregonTrail
OregonTrail

Reputation: 9039

Fastest way to draw to screen with software 3D rendering

I'm currently taking a course on polygonal 3D rendering from scratch. We write our own line drawing and clipping algorithms that are eventually used to draw polygons in 3D space using code for perspective transformations that we write ourself. The assumption of the course is that we write to 2D arrays that represent the window, viewport, or display device. In the first week of the course we wrote code to write out these 2D arrays as bitmap files so we could view the output.

Now I want to see the output of my software renderer in real-time and interact with it. What is the fastest way to draw a 2D bitmap array to the screen, in Mac OSX 10.9 for example? Linux? Windows?

I'm specifically looking for speed here, as the only thing that I want the GPU to do is draw the 2D array that I just rendered in main memory at runtime.

Upvotes: 2

Views: 1104

Answers (1)

JAre
JAre

Reputation: 4756

Without the initialization step it should be OpenGL rendering of the bitmap on screen aligned quad(What's the best way to draw a fullscreen quad in OpenGL 3.2?) Only costly operation will be uploading the bitmap but it's unavoidable anyway.

Upvotes: 1

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