mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-20 22:23:16 +00:00
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/*
|
|
* \brief Functor for blitting textures on a surface
|
|
* \author Norman Feske
|
|
* \date 2020-07-02
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2020 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__BLIT__PAINTER_H_
|
|
#define _INCLUDE__BLIT__PAINTER_H_
|
|
|
|
#include <blit/blit.h>
|
|
#include <os/texture.h>
|
|
|
|
|
|
struct Blit_painter
|
|
{
|
|
using Point = Genode::Surface_base::Point;
|
|
using Rect = Genode::Surface_base::Rect;
|
|
|
|
|
|
template <typename PT>
|
|
static inline void paint(Genode::Surface<PT> &surface,
|
|
Genode::Texture<PT> const &texture,
|
|
Point position)
|
|
{
|
|
Rect const clipped = Rect::intersect(Rect(position, texture.size()),
|
|
surface.clip());
|
|
|
|
if (!clipped.valid())
|
|
return;
|
|
|
|
int const src_w = texture.size().w;
|
|
int const dst_w = surface.size().w;
|
|
|
|
/* calculate offset of first texture pixel to copy */
|
|
unsigned long const tex_start_offset = (clipped.y1() - position.y)*src_w
|
|
+ clipped.x1() - position.x;
|
|
|
|
/* start address of source pixels */
|
|
PT const * const src = texture.pixel() + tex_start_offset;
|
|
|
|
/* start address of destination pixels */
|
|
PT * const dst = surface.addr() + clipped.y1()*dst_w + clipped.x1();
|
|
|
|
blit(src, (unsigned)(src_w*sizeof(PT)),
|
|
dst, (unsigned)(dst_w*sizeof(PT)),
|
|
(unsigned)(clipped.w()*sizeof(PT)), clipped.h());
|
|
|
|
surface.flush_pixels(clipped);
|
|
}
|
|
};
|
|
|
|
#endif /* _INCLUDE__BLIT__PAINTER_H_ */
|