Koraidon

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//
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// Created by ndraey on 10.09.23.
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//
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#include "../../include/video/blit.h"
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// ARGB or RGB supported
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// TODO: Test with 24-bit surfaces
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void buffer_blit(koraidon_backfb_t buffer, const char* input_image, size_t bpp, size_t x, size_t y, size_t w, size_t h) {
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	size_t bytes_pp = bpp >> 3;
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	if(!(bytes_pp == 4 || bytes_pp == 3)) {
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		return;
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	}
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	for(size_t sy = y; sy < y + h; sy++) {
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		for(size_t sx = x; sx < x + w; sx++) {
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			uint32_t outcoords = sy * (w * bytes_pp) + (bytes_pp * sx);
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			uint32_t srccoords = (sy - y) * (bytes_pp * w) + ((sx - x) * bytes_pp);
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			buffer.buffer[outcoords + 0] = input_image[srccoords + 0];
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			buffer.buffer[outcoords + 1] = input_image[srccoords + 1];
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			buffer.buffer[outcoords + 2] = input_image[srccoords + 2];
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			if(bytes_pp == 4)
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				buffer.buffer[outcoords + 3] = input_image[srccoords + 3];
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		}
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	}
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}