_DEPTHBUFFER

[MasterGy]

Hi !
A dear forum member used to come up with an idea for spatial shading with _DEPTHBUFFER. He rewrote my code, did something after _MAPTRIANGLE 3d, and the display was more enjoyable. Unfortunately, I can't find this code in my backup, neither on google nor in my search engine here.
Does anyone remember this?

[Richard]

No mention of _DEPTHBUFFER but would this be of any use?...

Re: What is the best way to implement a depth buffer?

The deoth-buffer would  be tied to the entire frame...

Code: QB64: [Select]

1. SUB PSET3D (X1 AS INTEGER, Y1 AS INTEGER, Z1 AS INTEGER, XANGLE AS INTEGER, YANGLE AS INTEGER, ZANGLE AS INTEGER, CLR AS INTEGER)
2.  
3. DIM AS INTEGER X, Y, Z
4. X = X1: Y = Y1: Z = Z1
5.  
6. 'WE'LL INSERT OUR ROTATION CODE HERE:
7. DIM AS INTEGER NEWX, NEWY, NEWZ, ROTX, ROTY, ROTZ
8. 'ROTATION ON THE X-AXIS:
9. NEWY = Y * COSTABLE(XANGLE) - Z * SINTABLE(XANGLE)
10. NEWZ = Z * COSTABLE(XANGLE) + Y * SINTABLE(XANGLE)
11.  
12. Y = NEWY
13. Z = NEWZ
14.  
15. 'ROTATION ON THE Y-AXIS:
16. NEWZ = Z * COSTABLE(YANGLE) - X * SINTABLE(YANGLE)
17. NEWX = X * COSTABLE(YANGLE) + Z * SINTABLE(YANGLE)
18. X = NEWX
19.  
20. 'ROTATION ON THE Z-AXIS:
21. NEWX = X * COSTABLE(ZANGLE) - Y * SINTABLE(ZANGLE)
22. NEWY = Y * COSTABLE(ZANGLE) + X * SINTABLE(ZANGLE)
23. ROTX = NEWX
24. ROTY = NEWY
25. ROTZ = NEWZ
26.  
27. DBUFFER(FOV * ROTX / (ROTZ + ZCENTER) + XCENTER, FOV * ROTY / (ROTZ + ZCENTER) + YCENTER).Z = Z
28. DBUFFER(FOV * ROTX / (ROTZ + ZCENTER) + XCENTER, FOV * ROTY / (ROTZ + ZCENTER) + YCENTER).CLR = CLR
29.  
30. 'AND WE'LL CHANGE THE PSET3D ROUTINE TO USE THE ROTATED COORDS:
31. PSET (FOV * ROTX / (ROTZ + ZCENTER) + XCENTER, FOV * ROTY / (ROTZ + ZCENTER) + YCENTER), CLR 'DIVIDE BOTH AXISES BY Z AND MOVE TO CENTER.
32.  
33. 'PIXEL (FOV * ROTX / (ROTZ + ZCENTER) + XCENTER, FOV * ROTY / (ROTZ + ZCENTER) + YCENTER), CLR 'DIVIDE BOTH AXISES BY Z AND MOVE
34. END SUB
35.  
36. SUB glClear()
37. END SUB
38.  
39. SUB glLoadIdentity()
40.         XCENTER = 320
41.         YCENTER = 240
42.         ZCENTER = 256
43.         FOV = 256
44. END SUB
45.  
46. SUB glClearColor(Red AS SINGLE, Green AS SINGLE, Blue AS SINGLE, Alph AS SINGLE)
47.         COLOR , RGBA(INT(Red * 255), INT(Green * 255), INT(Blue * 255), INT(Alph * 255))
48. END SUB
49.  

All of the above from "fatman2021"

(looks like some associated C code also)

[MasterGy]

thanks, no, that's not what I meant