overlay_alpha.hpp File Reference

#include <cstddef>
#include <cstdint>
#include <alpha-lib/rescale_type.hpp>

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Functions
template<RescaleType rescale_type = RescaleType::Div255_Round>
void	overlay_alpha_fast (const uint8_t *bg_img, const uint8_t *fg_img, uint8_t *out_img, size_t n)
	Fast function to overlay two images of the same size, where the number of pixels is a multiple of 8. More...
template<RescaleType rescale_type = RescaleType::Div255_Round>
void	overlay_alpha_stride (const uint8_t *bg_img, const uint8_t *fg_img, uint8_t *out_img, size_t bg_full_cols, size_t fg_rows, size_t fg_cols, size_t fg_full_cols)
	Overlay a smaller image with an alpha channel over a larger background image. More...
void	overlay_alpha_stride (const uint8_t(&bg_img)[4], const uint8_t(&fg_img)[4], uint8_t(&out_img)[4], size_t bg_full_cols, size_t fg_rows, size_t fg_cols, size_t fg_full_cols)
	Overlay a smaller image with an alpha channel over a larger background image. More...