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修复SaveAsImage保存的图片尺寸变大的问题

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monitor1394
2026-02-28 21:56:35 +08:00
parent 619246bee2
commit 7d4ba652ec
1 changed files with 28 additions and 4 deletions
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32
Runtime/Internal/Utilities/ChartHelper.cs
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@@ -1398,10 +1398,34 @@ namespace XCharts.Runtime
camera.Render(); camera.Render();
RenderTexture.active = rt; RenderTexture.active = rt;
tex = new Texture2D(width, height, TextureFormat.ARGB32, false);
tex.ReadPixels(new Rect(0, 0, width, height), 0, 0); // If exportScale > 1 we want to save the image back to the original logical
tex.Apply(); // size (option B): render at higher density, then downscale to target pixels
ApplyRoundedCornerClip(tex, cornerRadii); // so the saved image has original width/height but higher quality.
if (clampedExportScale > 1f)
{
var targetWidth = Mathf.Max(1, Mathf.CeilToInt(rectTransform.rect.width * scaleFactor));
var targetHeight = Mathf.Max(1, Mathf.CeilToInt(rectTransform.rect.height * scaleFactor));
var smallRT = RenderTexture.GetTemporary(targetWidth, targetHeight, 0, rt.format);
Graphics.Blit(rt, smallRT);
RenderTexture.active = smallRT;
tex = new Texture2D(targetWidth, targetHeight, TextureFormat.ARGB32, false);
tex.ReadPixels(new Rect(0, 0, targetWidth, targetHeight), 0, 0);
tex.Apply();
RenderTexture.ReleaseTemporary(smallRT);
var cornerRadiiFinal = GetChartCornerRadius(chart, rectTransform.rect.width, rectTransform.rect.height, scaleFactor);
ApplyRoundedCornerClip(tex, cornerRadiiFinal);
}
else
{
tex = new Texture2D(width, height, TextureFormat.ARGB32, false);
tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
tex.Apply();
ApplyRoundedCornerClip(tex, cornerRadii);
}
} }
finally finally
{ {