Difference between revisions of "Plot"
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y - Specifies the y coordinate of the pixel in range of [0,215]<br /> | y - Specifies the y coordinate of the pixel in range of [0,215]<br /> | ||
color - Specifies what color the plotted pixel will be. It is in RGB 565 format. | color - Specifies what color the plotted pixel will be. It is in RGB 565 format. | ||
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== Notes == | == Notes == | ||
| − | + | Given the minimal nature of this function, call overhead can easily be a non-trivial factor in obtaining reasonable performance. Marking it as <tt>static inline</tt> and declaring it in a single header file may be [[Optimization_Tips|appropriate]] to help ensure this function is inlined. | |
| + | |||
== Comments == | == Comments == | ||
Function written by ProgrammerNerd | Function written by ProgrammerNerd | ||
[[Category: Useful Routines]] | [[Category: Useful Routines]] | ||
Revision as of 14:18, 15 May 2014
Contents
Synopsis
Plots a point at (x,y) on the screen with a specified color
Source code
void plot(unsigned x,unsigned y,unsigned short color){
unsigned short*s=(unsigned short*)0xA8000000;
s+=(y*384)+x;
*s=color;
}
Inputs
x - Specifies the x coordinate of the pixel in range of [0,383]
y - Specifies the y coordinate of the pixel in range of [0,215]
color - Specifies what color the plotted pixel will be. It is in RGB 565 format.
Notes
Given the minimal nature of this function, call overhead can easily be a non-trivial factor in obtaining reasonable performance. Marking it as static inline and declaring it in a single header file may be appropriate to help ensure this function is inlined.
Comments
Function written by ProgrammerNerd
