在nds的子屏幕上绘制图像

发布于 2024-10-26 01:46:00 字数 810 浏览 0 评论 0原文

我对 libdns 完全陌生。我尝试更改示例 Graphics\Backgrounds\256_color_bmp 在子屏幕上显示背景。

这是我的代码。您知道在子屏幕上显示 hey_typBitmap 缺少什么吗？我已经设法在顶部屏幕上显示新图像。

#include <nds.h>
#include <stdio.h>
#include "drunkenlogo.h"
#include "hey_typ.h"

int main(void)
{
    videoSetMode(MODE_5_2D);
    vramSetBankA(VRAM_A_MAIN_BG_0x06000000);

    videoSetModeSub(MODE_5_2D);
    vramSetBankC(VRAM_C_SUB_BG_0x06200000);

    int bg3 = bgInit(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);
    dmaCopy(hey_typBitmap, bgGetGfxPtr(bg3), 256*256);
    dmaCopy(hey_typPal, BG_PALETTE, 256*2);

    int bg2 = bgInit(2, BgType_Bmp8, BgSize_B8_256x256, 0,0);
    dmaCopy(drunkenlogoBitmap, bgGetGfxPtr(bg2), 256*256);
    dmaCopy(drunkenlogoPal, BG_PALETTE, 256*2);

    while(1)swiWaitForVBlank();

    return 0;
}

原文

I am totally new to libdns. I try to change the sample Graphics\Backgrounds\256_color_bmp
to display the background on the subscreen.

Here is my code. Do you have any idea what is missing to display hey_typBitmap on the subscreen? I already managed to display the new image on the top screen.

#include <nds.h>
#include <stdio.h>
#include "drunkenlogo.h"
#include "hey_typ.h"

int main(void)
{
    videoSetMode(MODE_5_2D);
    vramSetBankA(VRAM_A_MAIN_BG_0x06000000);

    videoSetModeSub(MODE_5_2D);
    vramSetBankC(VRAM_C_SUB_BG_0x06200000);

    int bg3 = bgInit(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);
    dmaCopy(hey_typBitmap, bgGetGfxPtr(bg3), 256*256);
    dmaCopy(hey_typPal, BG_PALETTE, 256*2);

    int bg2 = bgInit(2, BgType_Bmp8, BgSize_B8_256x256, 0,0);
    dmaCopy(drunkenlogoBitmap, bgGetGfxPtr(bg2), 256*256);
    dmaCopy(drunkenlogoPal, BG_PALETTE, 256*2);

    while(1)swiWaitForVBlank();

    return 0;
}

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

心奴独伤 2024-11-02 01:46:00

在模式5下，DS有3个可用的背景层，并调用bgInit with 2 返回对同一屏幕上不同层的引用。如果您想在子屏幕上使用图层，请使用bgInitSub。

还有 2 个调色板；一个在主屏幕上，另一个在子屏幕上。子屏幕调色板位于 BG_PALETTE_SUB。

希望这段代码能够在第二个屏幕上显示图像（用 /* ! */ 标记的更改）：

int main(void)
{
    videoSetMode(MODE_5_2D);
    vramSetBankA(VRAM_A_MAIN_BG_0x06000000);

    videoSetModeSub(MODE_5_2D);
    vramSetBankC(VRAM_C_SUB_BG_0x06200000);

    int bg3 = bgInit(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);
    dmaCopy(hey_typBitmap, bgGetGfxPtr(bg3), 256*256);
    dmaCopy(hey_typPal, BG_PALETTE, 256*2);

    int bg3sub = bgInitSub(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);  /* ! */
    dmaCopy(drunkenlogoBitmap, bgGetGfxPtr(bg3sub), 256*256);  /* ! */
    dmaCopy(drunkenlogoPal, BG_PALETTE_SUB, 256*2);  /* ! */

    while(1)swiWaitForVBlank();

    return 0;
}

In mode 5 the DS has 3 background layers available, and calling bgInit with 2 returns a reference to a different layer on the same screen. If you want to use a layer on the sub-screen, use bgInitSub.

There are 2 palettes too; one on the main screen and a different one on the sub-screen. The sub-screen palette is at BG_PALETTE_SUB.

Hopefully this code will show the image on the second screen (changes marked with /* ! */):

int main(void)
{
    videoSetMode(MODE_5_2D);
    vramSetBankA(VRAM_A_MAIN_BG_0x06000000);

    videoSetModeSub(MODE_5_2D);
    vramSetBankC(VRAM_C_SUB_BG_0x06200000);

    int bg3 = bgInit(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);
    dmaCopy(hey_typBitmap, bgGetGfxPtr(bg3), 256*256);
    dmaCopy(hey_typPal, BG_PALETTE, 256*2);

    int bg3sub = bgInitSub(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);  /* ! */
    dmaCopy(drunkenlogoBitmap, bgGetGfxPtr(bg3sub), 256*256);  /* ! */
    dmaCopy(drunkenlogoPal, BG_PALETTE_SUB, 256*2);  /* ! */

    while(1)swiWaitForVBlank();

    return 0;
}

回复收藏 0 原文

~没有更多了~