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Invert surface normal when backfacing;

This commit is contained in:
bjorn 2022-08-12 23:30:39 -07:00
parent f679d602bd
commit 507c02bfb1
1 changed files with 9 additions and 3 deletions
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12
etc/shaders/lovr.glsl
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@ -207,16 +207,22 @@ mat3 getTangentMatrix() {
void initSurface(out Surface surface) {
surface.position = PositionWorld;
vec3 normal = normalize(Normal);
if (!FrontFacing) {
normal = -normal;
}
if (enableNormalMap) {
vec3 normalScale = vec3(Material.normalScale, Material.normalScale, 1.);
surface.normal = TangentMatrix * (normalize(getPixel(NormalTexture, UV).rgb * 2. - 1.) * normalScale);
} else {
surface.normal = normalize(Normal);
surface.normal = normal;
}
surface.geometricNormal = normalize(Normal);
surface.geometricNormal = normal;
surface.view = normalize(CameraPositionWorld - PositionWorld);
surface.reflection = reflect(-surface.view, surface.normal);
surface.reflection = reflect(-surface.view, normal);
vec4 color = Color;
if (useColorTexture) color *= getPixel(ColorTexture, UV);