1 /*---------------------------------------------------------------------------*
2 Project: TwlSDK - tcl - demos.TWL - tcl-1
3 File: screen.c
4
5 Copyright 2008 Nintendo. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain
8 proprietary information of Nintendo of America Inc. and/or Nintendo
9 Company Ltd., and are protected by Federal copyright law. They may
10 not be disclosed to third parties or copied or duplicated in any form,
11 in whole or in part, without the prior written consent of Nintendo.
12
13 $Date:: 2008-10-07#$
14 $Rev: 8888 $
15 $Author: onozawa_yuki $
16 *---------------------------------------------------------------------------*/
17 #include <twl.h>
18 #include "screen.h"
19 #include "font.h"
20
21 /*---------------------------------------------------------------------------*
22 Constant Definitions
23 *---------------------------------------------------------------------------*/
24 #define TEXT_SCREEN_SIZE 2048
25
26 /*---------------------------------------------------------------------------*
27 Internal Variable Definitions
28 *---------------------------------------------------------------------------*/
29
30 // Virtual screen [number of backgrounds][number of characters]
31 static u16 gScreen[ 1 ][ TEXT_SCREEN_SIZE / sizeof(u16) ] ATTRIBUTE_ALIGN(32);
32
33 /*---------------------------------------------------------------------------*
34 Name: InitScreen
35
36 Description: Initializes display settings for text display system.
37
38 Arguments: None.
39
40 Returns: None.
41 *---------------------------------------------------------------------------*/
InitScreen(void)42 void InitScreen(void)
43 {
44 // Bottom screen settings
45 GX_SetBankForSubBG(GX_VRAM_SUB_BG_32_H);
46 G2S_SetBG0Control(GX_BG_SCRSIZE_TEXT_256x256, GX_BG_COLORMODE_16, GX_BG_SCRBASE_0x0000, GX_BG_CHARBASE_0x04000,
47 GX_BG_EXTPLTT_01);
48 G2S_SetBG0Priority(0);
49 GXS_SetGraphicsMode(GX_BGMODE_0);
50 GXS_SetVisiblePlane(GX_PLANEMASK_BG0);
51 GXS_LoadBG0Char(d_CharData, 0, sizeof(d_CharData));
52 GXS_LoadBGPltt(d_PaletteData, 0, sizeof(d_PaletteData));
53 ((u16*)HW_DB_PLTT)[0] = 0x0000; // Black
54 MI_CpuFillFast(gScreen[0], 0, TEXT_SCREEN_SIZE);
55 DC_StoreRange(gScreen[0], TEXT_SCREEN_SIZE);
56 GXS_LoadBG0Scr(gScreen[0], 0, TEXT_SCREEN_SIZE);
57 }
58
59 /*---------------------------------------------------------------------------*
60 Name: ClearScreen
61
62 Description: Clears text display from the screen.
63
64 Arguments: None.
65
66 Returns: None.
67 *---------------------------------------------------------------------------*/
ClearScreen(void)68 void ClearScreen(void)
69 {
70 MI_CpuClearFast(gScreen[0], TEXT_SCREEN_SIZE);
71 }
72
73 /*---------------------------------------------------------------------------*
74 Name: PrintSubScreen
75
76 Description: Outputs text to the sub-screen.
77
78 Arguments: text: String to be output
79 ...: Virtual argument
80
81 Returns: None.
82 *---------------------------------------------------------------------------*/
PutScreen(s32 x,s32 y,u8 palette,char * text,...)83 void PutScreen(s32 x, s32 y, u8 palette, char* text, ...)
84 {
85 va_list vlist;
86 char temp[33];
87 s32 i;
88
89 MI_CpuClear(temp, sizeof(temp));
90 va_start(vlist, text);
91 (void)vsnprintf(temp, 33, text, vlist);
92 va_end(vlist);
93
94 for (i = 0; i < 32; i++)
95 {
96 if (temp[i] == 0x00)
97 {
98 break;
99 }
100
101 gScreen[0][((y * 32) + x + i) % (32 * 32)] = (u16) (palette << 12 | temp[i]);
102 }
103 }
104
105 /*---------------------------------------------------------------------------*
106 Name: UpdateScreen
107
108 Description: Applies the virtual screen content to VRAM.
109 Assumed to be called during the V-Blank period.
110
111 Arguments: None.
112
113 Returns: None.
114 *---------------------------------------------------------------------------*/
UpdateScreen(void)115 void UpdateScreen(void)
116 {
117 // Applies the virtual screen content to V-RAM
118 DC_StoreRange(gScreen[0], TEXT_SCREEN_SIZE);
119 GXS_LoadBG0Scr(gScreen[0], 0, TEXT_SCREEN_SIZE);
120 }
121
122 /*---------------------------------------------------------------------------*
123 End of file
124 *---------------------------------------------------------------------------*/
125