1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** GUIX Component */
16 /** */
17 /** Display Management (Display) */
18 /** */
19 /**************************************************************************/
20 #define GX_SOURCE_CODE
21
22
23 /* Include necessary system files. */
24
25 #include "gx_api.h"
26 #include "gx_display.h"
27
28 /**************************************************************************/
29 /* */
30 /* FUNCTION RELEASE */
31 /* */
32 /* _gx_display_driver_8bpp_pixel_write PORTABLE C */
33 /* 6.1 */
34 /* AUTHOR */
35 /* */
36 /* Kenneth Maxwell, Microsoft Corporation */
37 /* */
38 /* DESCRIPTION */
39 /* */
40 /* Generic 8bpp color format pixel write function. */
41 /* */
42 /* INPUT */
43 /* */
44 /* context Drawing context */
45 /* x X coordinate */
46 /* y Y coordinate */
47 /* color Color of pixel to write */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* None */
52 /* */
53 /* CALLS */
54 /* */
55 /* None */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* GUIX Internal Code */
60 /* */
61 /* RELEASE HISTORY */
62 /* */
63 /* DATE NAME DESCRIPTION */
64 /* */
65 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
66 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
67 /* resulting in version 6.1 */
68 /* */
69 /**************************************************************************/
_gx_display_driver_8bpp_pixel_write(GX_DRAW_CONTEXT * context,INT x,INT y,GX_COLOR color)70 VOID _gx_display_driver_8bpp_pixel_write(GX_DRAW_CONTEXT *context, INT x, INT y, GX_COLOR color)
71 {
72 GX_UBYTE *put = (GX_UBYTE *)context -> gx_draw_context_memory;
73
74 /* calculate address of scan line */
75 put += context -> gx_draw_context_pitch * y;
76
77 /* step in by x coordinate */
78 put += x;
79
80 /* write the pixel value */
81 *put = (GX_UBYTE)color;
82 }
83
84
