dnafasad.blogg.se - Using manipulators without a texture ac3d

#Using manipulators without a texture ac3d how to#
#Using manipulators without a texture ac3d code#

I was even able to get Firefox crashing so bad that it took down the whole X susbsystem on my Ubuntu. In general this kind of rendering is surely a stress for web browsers and apparently these use cases (strange matrices for example) are not tested very well.

I also found multipass rendering working really bad on chrome (probably because of how hw-accellerated rendering is implemented). for example image drawing with a matrix transform (needed for texture mapping) is quite inaccurate on chrome and IMO it's impossible to get a pixel-accurate result in general there is no way to turn off antialiasing when drawing on a canvas and this means you will get visible see-through lines when subdividing in triangles. I would implement perspective-correct texture mapping using mesh subdivision (like on PS1).

Linear texture mapping can be done using clipping and image drawing.

you cannot have a triangle where every vertex is an arbitrary RGB filled with bilinear interpolation, but you can do that filling using for example three arbitrary shades of a single color)

Gouraud filling is possible only on one component (i.e.

#Using manipulators without a texture ac3d how to#

I spent some time investigating how to do 3d graphics using canvas 2d context and I found it viable to do texture mapping gouraud shading by computing appropriate 2d gradients and matrices:

I think you will never get an accurate result. Result using 6502's technique - Texture image used It is, however, rather CPU intensive so I'd love to hear any optimization ideas. How could I fill it with a bitmap, after it has been texture-mapped?ĭoes anyone have any tips on perspective texture mapping (or image manipulation at all) using JavaScript and HTML5 Canvas? The left face is now filled up with a white/black gradient. How could I go about stretching a bitmap so that a rectangular bitmap can fill up a unregular cube face? In 2D, a projected square cube face is, due to perspective, not of a square shape, so I'll have to stretch it to make it fit in any quadrilateral. Moreover, image support in HTML5 canvas seems to be restricted to cropping.

#Using manipulators without a texture ac3d code#

The point is that I can hardly find any articles or code samples on the subject of image manipulation in JavaScript. To make things more exciting, I'd really love to implement texture mapping using a simple bitmap. The only method to fill the sides is using either a solid color or gradient as far as I'm concerned. In a 3D engine I'm working on I've succesfully managed to draw a cube in 3D.