abd0030237
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10693 a95241bf-73f2-0310-859d-f6bbb57e9c96
300 lines
9.7 KiB
C++
300 lines
9.7 KiB
C++
//----------------------------------------------------------------------------
|
|
// Anti-Grain Geometry - Version 2.2
|
|
// Copyright (C) 2002-2004 Maxim Shemanarev (http://www.antigrain.com)
|
|
//
|
|
// Permission to copy, use, modify, sell and distribute this software
|
|
// is granted provided this copyright notice appears in all copies.
|
|
// This software is provided "as is" without express or implied
|
|
// warranty, and with no claim as to its suitability for any purpose.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
// Contact: mcseem@antigrain.com
|
|
// mcseemagg@yahoo.com
|
|
// http://www.antigrain.com
|
|
//----------------------------------------------------------------------------
|
|
|
|
#ifndef AGG_PIXFMT_RGB24_PRE_INCLUDED
|
|
#define AGG_PIXFMT_RGB24_PRE_INCLUDED
|
|
|
|
#include <string.h>
|
|
#include "agg_basics.h"
|
|
#include "agg_color_rgba8.h"
|
|
#include "agg_rendering_buffer.h"
|
|
|
|
namespace agg
|
|
{
|
|
|
|
|
|
//==================================================pixel_formats_rgb24_pre
|
|
template<class Order> class pixel_formats_rgb24_pre
|
|
{
|
|
public:
|
|
typedef rgba8 color_type;
|
|
typedef Order order_type;
|
|
typedef rendering_buffer::row_data row_data;
|
|
|
|
private:
|
|
//--------------------------------------------------------------------
|
|
static inline void copy_pix(int8u* p, const color_type& c)
|
|
{
|
|
p[Order::R] = (int8u)c.r;
|
|
p[Order::G] = (int8u)c.g;
|
|
p[Order::B] = (int8u)c.b;
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
static inline void blend_pix(int8u* p, const color_type& c,
|
|
unsigned cover, unsigned alpha)
|
|
{
|
|
p[Order::R] = (int8u)((p[Order::R] * alpha + ((c.r * cover) << 8)) >> 16);
|
|
p[Order::G] = (int8u)((p[Order::G] * alpha + ((c.g * cover) << 8)) >> 16);
|
|
p[Order::B] = (int8u)((p[Order::B] * alpha + ((c.b * cover) << 8)) >> 16);
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
static inline void copy_or_blend_pix(int8u* p, const color_type& c, unsigned cover)
|
|
{
|
|
unsigned alpha = 65535 - cover * c.a;
|
|
|
|
if(alpha < 65535)
|
|
{
|
|
if(alpha <= 65535-255*255)
|
|
{
|
|
copy_pix(p, c);
|
|
}
|
|
else
|
|
{
|
|
blend_pix(p, c, cover, alpha);
|
|
}
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
static inline void copy_or_blend_pix(int8u* p, const color_type& c)
|
|
{
|
|
unsigned alpha = 255 - c.a;
|
|
if(alpha < 255)
|
|
{
|
|
if(alpha == 0)
|
|
{
|
|
copy_pix(p, c);
|
|
}
|
|
else
|
|
{
|
|
p[Order::R] = (int8u)((p[Order::R] * alpha + (c.r << 8)) >> 8);
|
|
p[Order::G] = (int8u)((p[Order::G] * alpha + (c.g << 8)) >> 8);
|
|
p[Order::B] = (int8u)((p[Order::B] * alpha + (c.b << 8)) >> 8);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
public:
|
|
//--------------------------------------------------------------------
|
|
pixel_formats_rgb24_pre(rendering_buffer& rb)
|
|
: m_rbuf(&rb)
|
|
{
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
unsigned width() const { return m_rbuf->width(); }
|
|
unsigned height() const { return m_rbuf->height(); }
|
|
|
|
//--------------------------------------------------------------------
|
|
color_type pixel(int x, int y) const
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
return color_type(p[Order::R], p[Order::G], p[Order::B]);
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
row_data span(int x, int y) const
|
|
{
|
|
return row_data(x, width() - 1, m_rbuf->row(y) + x * 3);
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
void copy_pixel(int x, int y, const color_type& c)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
p[Order::R] = (int8u)c.r;
|
|
p[Order::G] = (int8u)c.g;
|
|
p[Order::B] = (int8u)c.b;
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_pixel(int x, int y, const color_type& c, int8u cover)
|
|
{
|
|
copy_or_blend_pix(m_rbuf->row(y) + x + x + x, c, cover);
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
void copy_hline(int x, int y, unsigned len, const color_type& c)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
do
|
|
{
|
|
p[Order::R] = (int8u)c.r;
|
|
p[Order::G] = (int8u)c.g;
|
|
p[Order::B] = (int8u)c.b;
|
|
p += 3;
|
|
}
|
|
while(--len);
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
void copy_vline(int x, int y, unsigned len, const color_type& c)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
do
|
|
{
|
|
p[Order::R] = (int8u)c.r;
|
|
p[Order::G] = (int8u)c.g;
|
|
p[Order::B] = (int8u)c.b;
|
|
p += m_rbuf->stride();
|
|
}
|
|
while(--len);
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_hline(int x, int y, unsigned len,
|
|
const color_type& c, int8u cover)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
unsigned alpha = unsigned(cover) * c.a;
|
|
if(alpha == 255*255)
|
|
{
|
|
do
|
|
{
|
|
p[Order::R] = (int8u)c.r;
|
|
p[Order::G] = (int8u)c.g;
|
|
p[Order::B] = (int8u)c.b;
|
|
p += 3;
|
|
}
|
|
while(--len);
|
|
}
|
|
else
|
|
{
|
|
alpha = 65535 - alpha;
|
|
do
|
|
{
|
|
blend_pix(p, c, cover, alpha);
|
|
p += 3;
|
|
}
|
|
while(--len);
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_vline(int x, int y, unsigned len,
|
|
const color_type& c, int8u cover)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
unsigned alpha = unsigned(cover) * c.a;
|
|
if(alpha == 255*255)
|
|
{
|
|
do
|
|
{
|
|
p[Order::R] = (int8u)c.r;
|
|
p[Order::G] = (int8u)c.g;
|
|
p[Order::B] = (int8u)c.b;
|
|
p += m_rbuf->stride();
|
|
}
|
|
while(--len);
|
|
}
|
|
else
|
|
{
|
|
alpha = 65535 - alpha;
|
|
do
|
|
{
|
|
blend_pix(p, c, cover, alpha);
|
|
p += m_rbuf->stride();
|
|
}
|
|
while(--len);
|
|
}
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------------------
|
|
void copy_from(const rendering_buffer& from,
|
|
int xdst, int ydst,
|
|
int xsrc, int ysrc,
|
|
unsigned len)
|
|
{
|
|
memmove(m_rbuf->row(ydst) + xdst * 3,
|
|
(const void*)(from.row(ysrc) + xsrc * 3), len * 3);
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_solid_hspan(int x, int y, unsigned len,
|
|
const color_type& c, const int8u* covers)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
do
|
|
{
|
|
copy_or_blend_pix(p, c, *covers++);
|
|
p += 3;
|
|
}
|
|
while(--len);
|
|
}
|
|
|
|
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_solid_vspan(int x, int y, unsigned len,
|
|
const color_type& c, const int8u* covers)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
do
|
|
{
|
|
copy_or_blend_pix(p, c, *covers++);
|
|
p += m_rbuf->stride();
|
|
}
|
|
while(--len);
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_color_hspan(int x, int y, unsigned len,
|
|
const color_type* colors,
|
|
const int8u* covers,
|
|
int8u cover)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
do
|
|
{
|
|
copy_or_blend_pix(p, *colors++, covers ? *covers++ : cover);
|
|
p += 3;
|
|
}
|
|
while(--len);
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------------------
|
|
void blend_color_vspan(int x, int y, unsigned len,
|
|
const color_type* colors,
|
|
const int8u* covers,
|
|
int8u cover)
|
|
{
|
|
int8u* p = m_rbuf->row(y) + x + x + x;
|
|
do
|
|
{
|
|
copy_or_blend_pix(p, *colors++, covers ? *covers++ : cover);
|
|
p += m_rbuf->stride();
|
|
}
|
|
while(--len);
|
|
}
|
|
|
|
private:
|
|
rendering_buffer* m_rbuf;
|
|
};
|
|
|
|
typedef pixel_formats_rgb24_pre<order_rgb24> pixfmt_rgb24_pre; //----pixfmt_rgb24_pre
|
|
typedef pixel_formats_rgb24_pre<order_bgr24> pixfmt_bgr24_pre; //----pixfmt_bgr24_pre
|
|
}
|
|
|
|
|
|
#endif
|