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Lesson 6 frameBuffer.s Alignment Inconsistency #7

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mviz opened this issue Jun 10, 2015 · 2 comments
Open

Lesson 6 frameBuffer.s Alignment Inconsistency #7

mviz opened this issue Jun 10, 2015 · 2 comments
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@mviz
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mviz commented Jun 10, 2015

In Lesson 6 part 4 (My Dearest Graphics Processor), it mentions the importance of using .align 4 such that the lower 4 bits are 0s. The solution uses .align 12 as page alignment, justified for correct communication with the GPU. Is this a mistake?
@Chadderz121
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.align 4 is correct and sufficient. .align 12 came from some of my early experiments when I didn't understand the GPU caching behaviour. The solution should be corrected, not the tutorial text. I'll leave this issue open as a reminder to do that.

@ghost
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ghost commented Apr 16, 2018

The bug is still open which is causing the confusion in understanding alignment the concept.

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@Chadderz121 @mviz