你好，RTR4说硬件会自动偏移采样点。我再摘抄一段RTR4的文字，在P141
If all MSAA positional samples are covered by the fragment, the
shading sample is evaluated at the center of the pixel. If instead the fragment covers
fewer positional samples, the shading sample’s position can be shifted to better
represent the positions covered. Doing so avoids shade sampling off the edge of a
texture, for example. This position adjustment is called centroid sampling or centroid
interpolation and is done automatically by the GPU, if enabled. Centroid sampling
avoids off-triangle problems but can cause derivative computations to return incorrect
values
另外你引用那个博客讲的应该是准确的，MJP是ReadyAtDawn的图形大佬，教团1886那个工作室。
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