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changed the constant scale of cube_normal to -1.0 instead of -1000000.0; this fixes a rendering issue on oculus quest and does not change the computation as the vector is normalized afterwards.

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Adapted the comment above the code to reflect the change made as it already mentioned that z could be set to 1.
This commit is contained in:
Holger Dammertz 2019-08-16 19:33:22 +02:00
parent de8ce3e625
commit 8fb80788df
1 changed files with 2 additions and 2 deletions
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4
drivers/gles3/shaders/copy.glsl
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@ -165,11 +165,11 @@ void main() {
#elif defined(USE_ASYM_PANO)
// When an asymmetrical projection matrix is used (applicable for stereoscopic rendering i.e. VR) we need to do this calculation per fragment to get a perspective correct result.
// Note that we're ignoring the x-offset for IPD, with Z sufficiently in the distance it becomes neglectible, as a result we could probably just set cube_normal.z to -1.
// Asymmetrical projection means the center of projection is no longer in the center of the screen but shifted.
// The Matrix[2][0] (= asym_proj.x) and Matrix[2][1] (= asym_proj.z) values are what provide the right shift in the image.
vec3 cube_normal;
cube_normal.z = -1000000.0;
cube_normal.z = -1.0;
cube_normal.x = (cube_normal.z * (-uv_interp.x - asym_proj.x)) / asym_proj.y;
cube_normal.y = (cube_normal.z * (-uv_interp.y - asym_proj.z)) / asym_proj.a;
cube_normal = mat3(sky_transform) * mat3(pano_transform) * cube_normal;