void ShaderBlur::Apply( SDL_Surface* Target )
{
// Keep render target (might not be applying shader to screen)
SDL_Surface* r = spGetRenderTarget();
SDL_Surface* t = spUniqueCopySurface( Target );
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_TOP );
spSelectRenderTarget( t );
spSetBlending( SP_ONE );
spBlitSurface( 0, 0, -1, Target );
spSetBlending( SP_ONE >> 2 );
for( int y = -1; y <= 1; y++ )
{
for( int x = -1; x <= 1; x++ )
{
if( x != 0 && y != 0 )
{
spBlitSurface( x, y, -1, Target );
}
}
}
spSelectRenderTarget( Target );
spSetBlending( SP_ONE );
spBlitSurface( 0, 0, -1, t );
spDeleteSurface( t );
// Restore render target
spSelectRenderTarget( r );
}
void TransitionFade::Render()
{
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_TOP );
// Draw original source
spSetBlending( SP_ONE );
spBlitSurface( 0, 0, -1, SourceScreen );
// Alpha it to the actual screen
spSetBlending( Alpha );
spBlitSurface( 0, 0, -1, TargetScreen );
spSetBlending( SP_ONE );
}
void TransitionStrips::Render()
{
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_TOP );
// Draw original source
spBlitSurface( 0, 0, -1, SourceScreen );
// Draw strips
for( int i = 0; i < numStrips; i++ )
{
spBlitSurfacePart( i * stripWidth, 0, -1, TargetScreen, i * stripWidth, 0, stripWidth, speedList[i] * frameIndex );
}
}
void TransitionFadeIn::Render()
{
SDL_Surface* b = spGetWindowSurface();
SDL_Surface* t = spUniqueCopySurface( b );
// Fade from colour
spClearTarget( SourceColour );
// Buffer the next stages screen
spSelectRenderTarget( t );
Target->Render();
spSelectRenderTarget( b );
// Alpha it to the actual screen
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_TOP );
spSetBlending( Alpha );
spBlitSurface( 0, 0, -1, t );
spSetBlending( SP_ONE );
spDeleteSurface( t );
}
void draw_function( void )
{
//Cleaning the target (in this case the screen surface) with 0 (black).
//In this case I don't clean the zBuffer, because I don't use it. ;-)
//But you ARE able to use it, if you want!
spResetZBuffer();
spClearTarget( 34567 );
//Set the origin:
switch ( ( rotation >> 17 ) % 9 )
{
case 0:
spSetHorizontalOrigin( SP_CENTER );
spSetVerticalOrigin( SP_CENTER );
break;
case 1:
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_CENTER );
break;
case 2:
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_TOP );
break;
case 3:
spSetHorizontalOrigin( SP_CENTER );
spSetVerticalOrigin( SP_TOP );
break;
case 4:
spSetHorizontalOrigin( SP_RIGHT );
spSetVerticalOrigin( SP_TOP );
break;
case 5:
spSetHorizontalOrigin( SP_RIGHT );
spSetVerticalOrigin( SP_CENTER );
break;
case 6:
spSetHorizontalOrigin( SP_RIGHT );
spSetVerticalOrigin( SP_BOTTOM );
break;
case 7:
spSetHorizontalOrigin( SP_CENTER );
spSetVerticalOrigin( SP_BOTTOM );
break;
case 8:
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_BOTTOM );
break;
}
//Drawing the sprite in the middle of the screen
spDrawSprite( screen->w / 2, screen->h / 2, -1, sprite );
spDrawSprite( screen->w - 1, screen->h - 1, -1, sprite );
spDrawSprite( screen->w - 1, 0, -1, sprite );
spDrawSprite( 0, screen->h - 1, -1, sprite );
spDrawSprite( 0, 0, -1, sprite );
//mark the center
//spEllipseBorder( screen->w / 2, screen->h / 2, -100, 60+spSin(rotation/2)/1000, 60+spCos(rotation/3)/1000, 20+spCos(rotation/7)/10000, 20+spSin(rotation/5)/10000, 0 );
spEllipseBorder( screen->w / 2, screen->h / 2, -100, 6, 6, 2, 2, 0 );
//Show it!
spFlip();
}
