Irrlicht Engine

Gouraud shading instead of per pixel light:

// main.cpp - Point Light Soft Shadows with Radial Fade Gouraud Shading (OpenGL 2.0 / C++98)
#include <irrlicht.h>
#include <cmath>
#include <cstring>
#include <cstdio>

#ifdef _IRR_WINDOWS_
#pragma comment(lib, "Irrlicht.lib")
#endif

using namespace ...

It's far from perfect, but I'm no expert on shaders... I created it with the goal of making a shader that could quickly render cast shadows and be compatible with OpenGL 2.0 and irrlicht 1.9.0:
https://i.ibb.co/7xKc3mTV/image.png

// main.cpp - Point Light Shadows Fixed (Viewport & Space Matrix ...

I don't know if it has anything to do with it, but I've noticed that some graphics cards support 16-bit floating-point, while others don't

z-buffer (or w-buffer) is usually no problem until it is. And then you see it. And 90% you can fix it by increasing near-plane a bit or so. Or slightly modifying your 3d scene architecture (don't have flat planes too close together). In some specific scenes it obviously matters, but it's not ...

However, I don't have seen a difference in the analysis due to a render distance that was too low (far).

I was comparing z-buffer renders with w-buffer, I had the same result in irrlicht.
I used https://ezgif.com/compare-images with "Highlight differences" to see if there were pixel differences... there were none. (This was with burningsvideo, I told chatgpt to confirm that 1.9.0 used w-buffer by ...

https://i.ibb.co/BY4KGdF/image.png

// main.cpp - Shadow mapping for Irrlicht 1.9 / D3D9 / C++98
//
// Two-pass shadow mapping with PCF soft shadows:
// Pass 1: Render depth from light's perspective, encode depth to RGBA8
// Pass 2: Render scene with per-pixel lighting and shadow sampling ...

An anisotropic smooth operation:

https://i.ibb.co/LdqzNnG8/image.png

main.cpp
#include <irrlicht.h>
#include <vector>
#include "denoise_reduction.hpp"

#ifdef _IRR_WINDOWS_
#pragma comment(lib, "Irrlicht.lib")
#pragma comment(linker, "/subsystem:windows /ENTRY:mainCRTStartup")
#endif

using ...

https://i.ibb.co/PGRbfyP9/image.png
tested on irrlicht 1.9.0 svn trunk
#include <irrlicht.h>
#include <cstdio>
#include <cmath>
#include <vector>

#ifdef _IRR_WINDOWS_
#pragma comment(lib, "Irrlicht.lib")
#endif

using namespace irr;
using namespace core;
using namespace scene;
using namespace ...

You can have 8 textures per material. You have 1 material per meshbuffer.
You can have as as many meshbuffer in a mesh (model) as you want. Basically a main point of a meshbuffer is to split the parts in a model which have different materials.

UV's are in the mesh (S3DVertex) - not in the ...

Okay, I was thinking about how to make full use of the space on a 3D sphere. I realized that having multiple UV maps here would have been helpful, since half of the sphere takes up almost the entire UV map. But after giving it some thought... of course, I said to myself, I’ll just use two UV maps ...

Congratulations, may you have many more years and may all your wishes come true, do you plan to continue with the current irrlicht 1.9.0 pipeline? Maybe moving everything to shader model 3.0 would be good, considering that currently, since the 2000s, graphics abandoned fixed point and cannot take ...

Trust me I know that realistic environment light is tricky. I spend last 4 months full-time on that and I'm still failing. At least once you go beyond a simple metal helmet and an environment map (yeah, I know that demo as well ^_^)


I see that my eye does something that I also want to replicate ...

I'm pretty sure we're still talking past each other. If you want only 1 texture but move it over the model use a texture matrix (texture matrices have translate and rotate functions to make this easy). I thought maybe you need several because with more complicated models moving the texture makes ...

But why use a new projection for each angle? You only need to render new textures? I'm probably still missing something :-(
Note - you can always swap whole object as well. Show the one with the correct uv projection.
And yes - precalculated lightmaps are trouble if you rotate stuff. Thought you ...