1 /*---------------------------------------------------------------------------*
2   Project:  Horizon
3   File:     gr_Viewport.cpp
4 
5   Copyright (C)2009-2012 Nintendo Co., Ltd.  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   $Rev: 46347 $
14  *---------------------------------------------------------------------------*/
15 
16 #include <nn/gr/CTR/gr_Viewport.h>
17 #include <nn/gr/CTR/gr_Utility.h>
18 
19 namespace nn
20 {
21     namespace gr
22     {
23         namespace CTR
24         {
25 
MakeCommand(bit32 * command) const26             bit32* Viewport::MakeCommand( bit32* command ) const
27             {
28                 // Converts to values to pack in commands
29                 u32 width24 = Float32ToFloat24( width / 2.f );
30                 u32 width31 = Float32ToFloat31( 2.f / width ) << 1;
31                 u32 height24 = Float32ToFloat24( height / 2.f );
32                 u32 height31 = Float32ToFloat31( 2.f / height ) << 1;
33 
34                 // 0x41
35                 *command++ = width24;
36                 *command++ = PICA_CMD_HEADER_SINGLE_BE( PICA_REG_VIEWPORT_WIDTH1, 0x7 );
37 
38                 // 0x42
39                 *command++ = width31;
40                 *command++ = PICA_CMD_HEADER_SINGLE( PICA_REG_VIEWPORT_WIDTH2 );
41 
42                 // 0x43
43                 *command++ = height24;
44                 *command++ = PICA_CMD_HEADER_SINGLE_BE( PICA_REG_VIEWPORT_HEIGHT1, 0x7 );
45 
46                 // 0x44
47                 *command++ = height31;
48                 *command++ = PICA_CMD_HEADER_SINGLE( PICA_REG_VIEWPORT_HEIGHT2 );
49 
50                 // 0x68
51                 *command++ = PICA_CMD_DATA_VIEWPORT_XY( x, y );
52                 *command++ = PICA_CMD_HEADER_SINGLE( PICA_REG_VIEWPORT_XY );
53 
54                 return command;
55             }
56 
57         } // namespace CTR
58     } // namespace gr
59 } // namespace nn
60