Questions tagged [software-rendering]
Software rendering refers to a rendering process that is unaided by any specialized graphics hardware.
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How do I make my Software 3D Renderer slow down as soon as I change the screen resolution during runtime?
I'm writing a Software 3D Renderer in C many months after I first originally wrote it in Python. It is made using SDL2. My engine currently has depth shading, perspective correct texturing and some ...
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How do I get this texture mapping for my quad (no triangles) to be perspective correct?
I'm working on a 3D Software Rasterizer and I'm wanting to render textures on walls now. I've tried to do it myself, but failed since it just distorts. I read up on the wikipedia page for Texture ...
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How do I implement floors and ceilings properly to my DOOM Style Renderer?
I'm working on a tiny DOOM Style Renderer and I've managed to piece together something that can render walls. I pieced it together by looking at videos from 3DSage and The Old School Coder; I got a ...
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Why do the points of my triangle bend inwards?
I'm trying to make a tiny software renderer in hopes I can make some crappy little game in the far future, and I've hit a roadblock where nothing helps at all. I've found that whenever I go into the ...
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Avoiding z-fighting when reimplementing Freescape games
I need to avoid z-fighting in exactly co-planar surfaces that are too close to the other solids. I'm re-implementing the Freescape engine in ScummVM (all my code is open-source, available here), and ...
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texture in perspective by vertices not interpolation
I am writing a software renderer with allegro5, but without using its own triangle drawing functions, I use the al_draw_prim function to draw the triangles but with all the z coordinates at zero, the ...
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What's the purpose of this cross product and dot product in triangle clipping code?
I have this code that inserts a triangle into the drawing list. The PHD_VBUF structure stores one x,y,z vertex. If the vertex is behind the front plane, then ...
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Determine if a triangle is on the screen
I am working on a small software renderer, and I want to discard invisible triangles from the drawing process. Let's say I have a screen with resolution of 200x100 pixels. The triangle is defined with ...
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What's the difference between Unity3D rendering pipeline and OpenGL rendering pipeline?
I wanted to write small software renderer that will follow almost the same flow as OpenGL does, but got stuck with understanding of the rendering pipeline. After reading tons of info across the ...
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I'm following a tutorial but I don't get the same result; why are the raytraced shadows not working?
I followed this tutorial called "Ray Tracing in One Weekend" by Peter Shirley. And I implemented the java version of it for studying Ray Tracing.
Everything was all right until Diffuse ...
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Rendering to BufferStrategy gives absolutely no output despite following instructions
I am following this YouTube tutorial by TheCherno to make 3D graphics using Java Standard Library.
Display.java
...
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How to sort polygons without a depth buffer
Please help me getting understanding how did they sort polygons in old games from the eighties.
They did not use z-buffer or anything like this, thats for sure.
Please look at the screenshot. How ...
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How does cube mapping work?
Based on my reading of cube mapping tutorials so far, my understanding is that you need a direction vector, and from the direction vector we can determine the point of intersection with one of the six ...
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Function to draw an image inside a rectangle
How can I draw an image inside a rectangle?
I am introducing myself in the manipulation of images for games, I have a window and inside there is a rectangle that deforms. I would like to fill the ...
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View "distortion" or "stretching" when looking up/down? (Software renderer)
I'm not sure distortion is the right way to describe this. I've uploaded a video to show you guys. Apologies if it's long, but I wanted to show the code as well as posting it here. https://youtu.be/...
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