libgraphics - 3D computer graphics library

	Commit message (Collapse)	Author	Age	Files	Lines
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*	add user-defined vertex attributes (varyings) and improve the interpolation ↵	rodri	2024-03-03	5	-72/+232
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*	have separate routines for drawing and memdrawing.	rodri	2024-02-27	4	-3/+34
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*	interpolate every vertex attribute when clipping and during rasterization.	rodri	2024-02-25	2	-23/+43
\| \| \| \|	added parameters necessary to implement the Phong shading model.
*	add initial support for OBJMaterial properties.	rodri	2024-02-21	3	-10/+39
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*	implement general polygon fan triangulation.	rodri	2024-02-15	1	-61/+48
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*	pass an entire entity to the shader unit. fix a bug in cliptriangle.	rodri	2024-02-14	2	-26/+22
\| \| \| \| \| \| \| \| \| \|	an entity is passed instead of a model so we can access its frame of reference to perform the model-to-world transformation. the bug in cliptriangle was due to sd[01] being declared as static which, when rendering multiple entities, was causing d0 = d1, which led to division-by-zero.
*	lay out the grounds for a scene renderer.	rodri	2024-02-13	6	-137/+234
\| \| \| \| \| \|	also fixed an issue with cliptriangle() where an entire tri would get discarded if all its vertices were outside the frustum.
*	completed homogeneous clipping procedure.	rodri	2024-02-12	2	-39/+101
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*	initial clipping implementation. (not fully working yet)	rodri	2024-02-10	1	-67/+53
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*	load XRGB32 textures.	rodri	2024-02-08	1	-6/+11
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*	implement perspective-correct attribute interpolation.	rodri	2024-02-07	1	-13/+146
\| \| \| \| \| \| \| \| \|	also committing unfinished code for the clipping algorithm. references: - Kok-Lim Low, “Perspective-Correct Interpolation”, 2002 - https://www.scratchapixel.com/lessons/3d-basic-rendering/rasterization-practical-implementation/perspective-correct-interpolation-vertex-attributes.html - https://www.rose-hulman.edu/class/csse/csse351-abet/m10/triangle_fill.pdf, p. 23
*	document part of the pipeline. prepare the grounds for triangle clipping.	rodri	2024-02-03	2	-37/+82
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*	only create existing indices during quad triangulation.	rodri	2024-02-01	1	-24/+32
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*	improve coordinate transformations and fix projections.	rodri	2024-01-31	5	-93/+42
\| \| \| \| \|	also got rid of Deco. there's no point in having that, just deal with image(6) files.
*	make the vertex shader process actual vertices.	rodri	2024-01-30	3	-8/+5
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*	update readme.	rodri	2024-01-30	1	-0/+3
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*	import the new renderer and clean things up.	rodri	2024-01-30	13	-225/+895
\| \| \| \| \| \| \| \| \| \| \| \|	i integrated the renderer i've been developing on the tinyrend repo and got rid of a bunch of stuff that's no longer necessary. also began structuring things to fit the new interface i have in mind. there are still some artifacts with the projection xforms that cause issues with clipping and division by zero.
*	use the system-wide libgeometry.	rodri	2024-01-26	1	-3/+1
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*	add a line clipping procedure based on the Liang-Barsky algorithm. (thanks ↵	rodri	2021-07-18	2	-1/+64
\| \| \| \|	jmi2k!)
*	move the edge function out into libgeometry.	rodri	2020-07-05	1	-30/+0
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*	bring flat triangle rasterization back, with some goodies for future shading ↵	rodri	2020-06-29	4	-1/+88
\| \| \| \|	work. add uv coordinates to the vertex.
*	transcribe macros into actual functions. remove unused memdraw code.	rodri	2020-04-28	2	-37/+55
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*	standalone version release.	rodri	2020-04-17	9	-0/+904