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40 lines
1.3 KiB
40 lines
1.3 KiB
#ifndef GBSDK_VIDEO_H
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#define GBSDK_VIDEO_H
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#include <stdint.h>
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#include <sdk/hardware.h>
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//Turn off the LCD, with the proper checks that this happens during VBLANK
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void lcd_off(void) __preserves_regs(b, c, d, e, h, l);
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//Copy to VRAM with STAT checks, so these function are safe to write to VRAM at any time.
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void vram_memcpy(uint16_t dst, void* src, uint16_t size) __preserves_regs(b, c);
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void vram_memset(uint16_t dst, uint8_t value, uint16_t size) __preserves_regs(b, c);
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inline void vram_set(uint16_t dst, uint8_t value) {
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while(rSTAT & STAT_BUSY) {}
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*((uint8_t*)dst) = value;
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}
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#if CGB
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#define PAL24(rgb) (((rgb & 0xF80000) >> 19) | ((rgb & 0x00F800) >> 6) | ((rgb & 0x0000F8) << 7))
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void cgb_background_palette(uint16_t* palette) __preserves_regs(b, c);
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void cgb_object_palette(uint16_t* palette) __preserves_regs(b, c);
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inline void cgb_gdma(uint16_t dst, const void* src, uint8_t count) {
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rHDMA1 = ((uint16_t)src) >> 8;
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rHDMA2 = ((uint16_t)src) & 0xFF;
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rHDMA3 = dst >> 8;
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rHDMA4 = dst & 0xFF;
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rHDMA5 = count - 1;
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}
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inline void cgb_hdma(uint16_t dst, const void* src, uint8_t count) {
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rHDMA1 = ((uint16_t)src) >> 8;
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rHDMA2 = ((uint16_t)src) & 0xFF;
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rHDMA3 = dst >> 8;
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rHDMA4 = dst & 0xFF;
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rHDMA5 = (count - 1) | 0x80;
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}
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#endif
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#endif//GBSDK_VIDEO_H
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