public override Texture2D RenderStaticPreview(string assetPath, Object[] subAssets, int width, int height)
{
if (!ShaderUtil.hardwareSupportsRectRenderTexture)
{
return(null);
}
Texture texture = target as Texture;
if (IsCubemap())
{
return(m_CubemapPreview.RenderStaticPreview(texture, width, height));
}
TextureImporter textureImporter = AssetImporter.GetAtPath(assetPath) as TextureImporter;
if (textureImporter != null && textureImporter.textureType == TextureImporterType.Sprite && textureImporter.spriteImportMode == SpriteImportMode.Polygon)
{
// If the texture importer is a Sprite of primitive, use the sprite inspector for generating preview/icon.
if (subAssets.Length > 0)
{
Sprite sprite = subAssets[0] as Sprite;
if (sprite)
{
return(SpriteInspector.BuildPreviewTexture(width, height, sprite, null, true));
}
}
else
{
return(null);
}
}
PreviewHelpers.AdjustWidthAndHeightForStaticPreview(texture.width, texture.height, ref width, ref height);
RenderTexture savedRT = RenderTexture.active;
Rect savedViewport = ShaderUtil.rawViewportRect;
RenderTexture tmp = RenderTexture.GetTemporary(
width, height,
0,
SystemInfo.GetGraphicsFormat(DefaultFormat.LDR));
Material mat = EditorGUI.GetMaterialForSpecialTexture(texture);
if (mat != null)
{
Graphics.Blit(texture, tmp, mat);
}
else
{
Graphics.Blit(texture, tmp);
}
RenderTexture.active = tmp;
Texture2D copy;
Texture2D tex2d = target as Texture2D;
if (tex2d != null && tex2d.alphaIsTransparency)
{
copy = new Texture2D(width, height, TextureFormat.RGBA32, false);
}
else
{
copy = new Texture2D(width, height, TextureFormat.RGB24, false);
}
copy.ReadPixels(new Rect(0, 0, width, height), 0, 0);
copy.Apply();
RenderTexture.ReleaseTemporary(tmp);
EditorGUIUtility.SetRenderTextureNoViewport(savedRT);
ShaderUtil.rawViewportRect = savedViewport;
return(copy);
}
public override Texture2D RenderStaticPreview(string assetPath, Object[] subAssets, int width, int height)
{
Texture2D textured;
if (!ShaderUtil.hardwareSupportsRectRenderTexture)
{
return(null);
}
Texture target = this.target as Texture;
if (this.IsCubemap())
{
return(this.m_CubemapPreview.RenderStaticPreview(target, width, height));
}
TextureImporter atPath = AssetImporter.GetAtPath(assetPath) as TextureImporter;
if ((atPath != null) && (atPath.spriteImportMode == SpriteImportMode.Polygon))
{
Sprite sprite = subAssets[0] as Sprite;
if (sprite != null)
{
return(SpriteInspector.BuildPreviewTexture(width, height, sprite, null, true));
}
}
PreviewHelpers.AdjustWidthAndHeightForStaticPreview(target.width, target.height, ref width, ref height);
RenderTexture active = RenderTexture.active;
Rect rawViewportRect = ShaderUtil.rawViewportRect;
bool flag = !TextureUtil.GetLinearSampled(target);
RenderTexture dest = RenderTexture.GetTemporary(width, height, 0, RenderTextureFormat.Default, !flag ? RenderTextureReadWrite.Linear : RenderTextureReadWrite.sRGB);
Material materialForSpecialTexture = EditorGUI.GetMaterialForSpecialTexture(target);
GL.sRGBWrite = QualitySettings.activeColorSpace == ColorSpace.Linear;
if (materialForSpecialTexture != null)
{
if (Unsupported.IsDeveloperBuild())
{
materialForSpecialTexture = new Material(materialForSpecialTexture);
}
Graphics.Blit(target, dest, materialForSpecialTexture);
}
else
{
Graphics.Blit(target, dest);
}
GL.sRGBWrite = false;
RenderTexture.active = dest;
Texture2D textured2 = this.target as Texture2D;
if ((textured2 != null) && textured2.alphaIsTransparency)
{
textured = new Texture2D(width, height, TextureFormat.ARGB32, false);
}
else
{
textured = new Texture2D(width, height, TextureFormat.RGB24, false);
}
textured.ReadPixels(new Rect(0f, 0f, (float)width, (float)height), 0, 0);
textured.Apply();
RenderTexture.ReleaseTemporary(dest);
EditorGUIUtility.SetRenderTextureNoViewport(active);
ShaderUtil.rawViewportRect = rawViewportRect;
if ((materialForSpecialTexture != null) && Unsupported.IsDeveloperBuild())
{
Object.DestroyImmediate(materialForSpecialTexture);
}
return(textured);
}
