English 中文(简体)
OpenGL VBO: Short or Float?
原标题:OpenGL VBO: Short or Float?
  • 时间:2012-01-15 18:28:05
  •  标签:
  • c
  • opengl

我需要决定我是否应当利用GL_UNSignED_SHORT或GL_FLOAT为我(法定)的VBO作广告。 短时间利用的记忆少了2倍,但也会降低出勤速度(因为万国邮联必须将其转换为浮动)? 文本坐标的样子,我可以使用GL_ UNSignED_BYTE for small textures and GL_UNSIGNED_SHORT for greater them (use a texturemap to 0-1),但我担心这会降低速度。

最佳回答

对于任何现代硬件(DX10-能或更好),你可以认为,使阅读业绩归属始终以记忆存取为主,而不是由电动向转换。 基本上为free。

大部分DX9级硬件也是如此,但有些硬件有某些垂直格式,无法很好地运作。

尽管如此,我肯定能够使用未经签名的文字坐标。 在大多数模型中,通常需要比对正文坐标进行更精确。 未经签名的短 short通常是罚款的,但只有一点足够精准才能工作。

问题回答

将短波转换为浮动,应当是非常廉价的作业。 我将think,记忆带宽的节余将超过额外处理费用。

But without actually testing it, this remains nothing but a wild guess.





相关问题
Fastest method for running a binary search on a file in C?

For example, let s say I want to find a particular word or number in a file. The contents are in sorted order (obviously). Since I want to run a binary search on the file, it seems like a real waste ...

Print possible strings created from a Number

Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...

Tips for debugging a made-for-linux application on windows?

I m trying to find the source of a bug I have found in an open-source application. I have managed to get a build up and running on my Windows machine, but I m having trouble finding the spot in the ...

Trying to split by two delimiters and it doesn t work - C

I wrote below code to readin line by line from stdin ex. city=Boston;city=New York;city=Chicago and then split each line by ; delimiter and print each record. Then in yet another loop I try to ...

Good, free, easy-to-use C graphics libraries? [closed]

I was wondering if there were any good free graphics libraries for C that are easy to use? It s for plotting 2d and 3d graphs and then saving to a file. It s on a Linux system and there s no gnuplot ...

Encoding, decoding an integer to a char array

Please note that this is not homework and i did search before starting this new thread. I got Store an int in a char array? I was looking for an answer but didn t get any satisfactory answer in the ...

热门标签