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filter は mipmap(disable, enable, blend) x (point, linear) の６種

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This commit is contained in:
ousttrue
2021-05-24 16:31:25 +09:00
parent 6b5388986d
commit c71bfd7f94
1 changed files with 22 additions and 2 deletions
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24
Assets/UniGLTF/Runtime/UniGLTF/IO/TextureIO/TextureSamplerUtil.cs
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@@ -24,18 +24,27 @@ namespace UniGLTF
}
}
/// <summary>
/// MIPMAP: disable, enable, blend
/// </summary>
/// <param name="texture"></param>
/// <returns></returns>
public static glFilter ExportMinFilter(Texture2D texture)
{
if (texture.mipmapCount > 1)
{
switch (texture.filterMode)
{
// mipmap: enable
case FilterMode.Point:
return glFilter.NEAREST_MIPMAP_LINEAR;
return glFilter.NEAREST_MIPMAP_NEAREST;
// mipmap: enable
case FilterMode.Bilinear:
return glFilter.LINEAR_MIPMAP_NEAREST;
// mipmap: blend
// glFilter.NEAREST_MIPMAP_LINEAR is not exists
case FilterMode.Trilinear:
return glFilter.LINEAR_MIPMAP_LINEAR;
@@ -45,6 +54,7 @@ namespace UniGLTF
}
else
{
// mipmap: disable
switch (texture.filterMode)
{
case FilterMode.Point:
@@ -73,20 +83,30 @@ namespace UniGLTF
{
switch (filterMode)
{
// mipmap: disable
case glFilter.NEAREST:
return (FilterMode.Point, false);
// mipmap: disable
case glFilter.NONE:
case glFilter.LINEAR:
return (FilterMode.Bilinear, false);
// mipmap: enable
case glFilter.NEAREST_MIPMAP_NEAREST:
case glFilter.NEAREST_MIPMAP_LINEAR:
return (FilterMode.Point, true);
// mipmap: enable
case glFilter.LINEAR_MIPMAP_NEAREST:
return (FilterMode.Bilinear, true);
// mipmap: blend
case glFilter.NEAREST_MIPMAP_LINEAR:
// not exists in unity.
// downgrade mipmap: blend => enable
return (FilterMode.Point, true);
// mipmap: blend
case glFilter.LINEAR_MIPMAP_LINEAR:
return (FilterMode.Trilinear, true);