Difference between revisions of "Plot"
From WikiPrizm
Jump to navigationJump to search (Less-strange wording on inlining advice.) |
m (Use GetVRAMAddress not 0xA8000000) |
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| Line 2: | Line 2: | ||
Plots a point at (x,y) on the screen with a specified color | Plots a point at (x,y) on the screen with a specified color | ||
== Source code == | == Source code == | ||
| − | <nowiki>void plot(unsigned x,unsigned y,unsigned short color){ | + | <nowiki>#include <fxcg/display.h> |
| − | unsigned short*s=(unsigned short*) | + | void plot(unsigned x,unsigned y,unsigned short color){ |
| + | unsigned short*s=(unsigned short*) GetVRAMAddress; | ||
s+=(y*384)+x; | s+=(y*384)+x; | ||
*s=color; | *s=color; | ||
Latest revision as of 06:44, 17 March 2022
Contents
Synopsis
Plots a point at (x,y) on the screen with a specified color
Source code
#include <fxcg/display.h>
void plot(unsigned x,unsigned y,unsigned short color){
unsigned short*s=(unsigned short*) GetVRAMAddress;
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
