Function LoadBMPPalette

common/Image.cpp:787–820

}

bool LoadBMPPalette(std::vector<u32>& palette, const u8* data, u32 palette_offset, const BMPInfoHeader& info_header)
{
	// 1 bit format doesn't use a palette in the traditional sense
	if (info_header.bit_count == 1)
	{
		palette = {0xFFFFFFFF, 0xFF000000};
		return true;
	}

	const u32 num_colors = (info_header.clr_used > 0) ? info_header.clr_used : (1u << info_header.bit_count);

	// Make sure that we don't have an unreasonably large palette
	if (num_colors > 256)
	{
		Console.Error("Invalid palette size: %u", num_colors);
		return false;
	}

	palette.clear();
	palette.reserve(num_colors);

	const u8* palette_data = data + sizeof(BMPFileHeader) + info_header.size;

	for (u32 i = 0; i < num_colors; i++)
	{
		const u8* color = palette_data + (i * 4);
		const u8 b = color[0];
		const u8 g = color[1];
		const u8 r = color[2];
		palette.push_back(r | (g << 8) | (b << 16) | 0xFF000000u);
	}

	return true;
}

bool LoadUncompressedBMP(u32* pixels, const u8* src, const u8* data, u32 width, u32 height, const BMPInfoHeader& info_header, const std::vector<u32>& palette, bool flip_vertical, u32 red_mask = 0, u32 green_mask = 0, u32 blue_mask = 0, u32 alpha_mask = 0, bool use_alpha = false)
{