Some flips needed on some faces

[urlando]

Hello, thanks for the shader, it saved me a lot of time.

I had some troubles (half the cubemap needed flip) when I downloaded in 2K (with 4K Video Downloader) that video: https://www.youtube.com/watch?v=YAABA-Ri0YI&t=219s

in unity 2019.3.a3 it's now perfect (still the line problem on some edges, but I'll work on it soon)

modified shader here (lines 60/62/65/73/74):

1. Shader "Custom/EAC-sphere"
2. {
3. Properties
4. {
5. _MainTex ("Texture", 2D) = "white" {}
6. }
7. SubShader
8. {
9. // No culling or depth
10. Cull Front ZWrite Off ZTest Always // Cull front will flip normals
12. Pass
13. {
14. CGPROGRAM

15. pragma vertex vert

16. pragma fragment frag

18. include "UnityCG.cginc"

20. struct appdata
21. {
22. float4 vertex : POSITION;
23. float3 normal : NORMAL;
24. };
26. struct v2f
27. {
28. float4 vertex : SV_POSITION;
29. float3 coord : TEXCOORD0;
30. };
32. v2f vert (appdata v)
33. {
34. v2f o;
35. o.vertex = UnityObjectToClipPos(v.vertex);
36. o.coord = v.normal;
37. return o;
38. }
40. sampler2D _MainTex;
42. float4 frag (v2f i) : SV_Target {
43. float pi = UNITY_PI;
44. float3 xyz = normalize(i.coord);
45. float x = xyz.x, y = xyz.y, z = xyz.z;
47. float u = 0, v = 0;
48. float scale; // sphere coordinates to cube coordinates according to similar-triangle
49. if (abs(x) >= abs(y) && abs(x) >= abs(z)) {
50. scale = 1.0 / abs(x); // let's assume that radius of sphere is 1, which means u is 6.0 and v is 4.0
51. if (x >= 0) { // right
52. u = 5.0 - 4.0 atan(z scale) / pi;
53. v = 3.0 + 4.0 atan(y scale) / pi;
54. } else { // left
55. u = 1.0 + 4.0 atan(z scale) / pi;
56. v = 3.0 + 4.0 atan(y scale) / pi;
57. }
58. } else if (abs(y) >= abs(x) && abs(y) >= abs(z)) {
59. scale = 1.0 / abs(y);
60. if (y < 0) { // top // < instead of >=
61. u = 5.0 + 4.0 atan(z scale) / pi;
62. v = 1.0 - 4.0 atan(x scale) / pi; // - instead of +
63. } else { // down
64. u = 1.0 - 4.0 atan(z scale) / pi;
65. v = 1.0 - 4.0 atan(x scale) / pi; // - instead of +
66. }
67. } else if (abs(z) >= abs(x) && abs(z) >= abs(y)) {
68. scale = 1.0 / abs(z);
69. if (z >= 0) { // front
70. u = 3.0 + 4.0 atan(x scale) / pi;
71. v = 3.0 + 4.0 atan(y scale) / pi;
72. } else { // end
73. u = 3.0 - 4.0 atan(y scale) / pi; // - instead of +
74. v = 1.0 - 4.0 atan(x scale) / pi; // - instead of +
75. }
76. }
78. return tex2D(_MainTex, float2(u / 6.0, 1.0 - v / 4.0));
79. }
81. ENDCG
82. }
83. }
84. }

[Nolkeg]

Thanks, this fix the issue on Andriod. But on Windows, the original shader worked fine.