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https://github.com/AntonioND/nitro-engine.git
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48e013f815
They aren't available in the libnds provided by devkitPro. I could copy the safe versions of the functions to Nitro Engine, but that wouldn't help as the program would still use the unsafe versions for everything else outside of Nitro Engine. The fix needs to happen in libnds for it to work.
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
// SPDX-License-Identifier: MIT
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//
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// Copyright (c) 2023 Antonio Niño Díaz
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//
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// This file is part of Nitro Engine
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#include <nds.h>
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#include "NEMain.h"
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void NE_DisplayListDrawDMA_GFX_FIFO(const void *list)
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{
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const uint32_t *p = list;
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NE_AssertPointer(p, "NULL display list pointer");
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uint32_t words = *p++;
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NE_Assert(words > 0, "Empty display list");
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DC_FlushRange(p, words * 4);
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// There is a hardware bug that affects DMA when there are multiple channels
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// active, under certain conditions. Instead of checking for said
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// conditions, simply ensure that there are no DMA channels active.
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while (dmaBusy(0) || dmaBusy(1) || dmaBusy(2) || dmaBusy(3));
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#ifdef NE_BLOCKSDS
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dmaSetParams(0, p, (void *)&GFX_FIFO, DMA_FIFO | words);
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#else
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DMA_SRC(0) = (uint32_t)p;
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DMA_DEST(0) = (uint32_t)&GFX_FIFO;
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DMA_CR(0) = DMA_FIFO | words;
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#endif
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while (dmaBusy(0));
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}
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void NE_DisplayListDrawCPU(const void *list)
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{
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const uint32_t *p = list;
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NE_AssertPointer(p, "NULL display list pointer");
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uint32_t words = *p++;
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NE_Assert(words > 0, "Empty display list");
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while (words--)
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GFX_FIFO = *p++;
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}
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typedef void (*ne_display_list_draw_fn)(const void *);
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static ne_display_list_draw_fn ne_display_list_draw = NE_DisplayListDrawDMA_GFX_FIFO;
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void NE_DisplayListSetDefaultFunction(NE_DisplayListDrawFunction type)
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{
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if (type == NE_DL_CPU)
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{
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ne_display_list_draw = NE_DisplayListDrawCPU;
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}
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else if (type == NE_DL_DMA_GFX_FIFO)
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{
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ne_display_list_draw = NE_DisplayListDrawDMA_GFX_FIFO;
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}
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else
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{
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NE_Assert(0, "Invalid display list function type");
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ne_display_list_draw = NE_DisplayListDrawDMA_GFX_FIFO;
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}
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}
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void NE_DisplayListDrawDefault(const void *list)
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{
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ne_display_list_draw(list);
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}
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