2 # include <simgear_config.h>
5 #if defined(__CYGWIN__) /* && !defined(USING_X) */
9 #if defined(WIN32) /* MINGW and MSC predefine WIN32 */
16 #include <string.h> // memcpy()
18 #include "GLBitmaps.h"
20 GlBitmap::GlBitmap( GLenum mode, GLint width, GLint height, GLubyte *bitmap )
21 : m_bytesPerPixel(mode==GL_RGB?3:4), m_width(width), m_height(height), m_bitmap(NULL)
23 m_bitmapSize = m_bytesPerPixel*m_width*m_height;
27 glGetIntegerv( GL_VIEWPORT, vp );
30 m_bitmapSize = m_bytesPerPixel*m_width*m_height;
32 m_bitmap = (GLubyte *)malloc( m_bitmapSize );
33 if ( bitmap ) memcpy( m_bitmap, bitmap, m_bitmapSize );
34 else glReadPixels( 0,0, m_width,m_height, mode, GL_UNSIGNED_BYTE, m_bitmap );
37 GlBitmap::~GlBitmap( )
39 if ( m_bitmap ) free( m_bitmap );
42 GLubyte *GlBitmap::getBitmap()
47 void GlBitmap::copyBitmap( GlBitmap *from, GLint at_x, GLint at_y )
49 GLint newWidth = at_x + from->m_width;
50 GLint newHeight = at_y + from->m_height;
51 if ( newWidth < m_width ) newWidth = m_width;
52 if ( newHeight < m_height ) newHeight = m_height;
53 m_bitmapSize = m_bytesPerPixel*newWidth*newHeight;
54 GLubyte *newBitmap = (GLubyte *)malloc( m_bitmapSize );
56 for ( y=0; y<m_height; y++ )
58 GLubyte *s = m_bitmap + m_bytesPerPixel * (y * m_width);
59 GLubyte *d = newBitmap + m_bytesPerPixel * (y * newWidth);
60 memcpy( d, s, m_bytesPerPixel * m_width );
66 for ( y=0; y<from->m_height; y++ )
68 GLubyte *s = from->m_bitmap + from->m_bytesPerPixel * (y * from->m_width);
69 GLubyte *d = m_bitmap + m_bytesPerPixel * ((at_y+y) * m_width + at_x);
70 for ( x=0; x<from->m_width; x++ )
75 if ( m_bytesPerPixel == 4 )
77 d[3] = (from->m_bytesPerPixel == 4) ? s[3] : 0;
79 s += from->m_bytesPerPixel;