//! get a filtered pixel
inline SColor CImage::getPixelBox( s32 x, s32 y, s32 fx, s32 fy, s32 bias ) const
{
SColor c;
s32 a = 0, r = 0, g = 0, b = 0;
for ( s32 dx = 0; dx != fx; ++dx )
{
for ( s32 dy = 0; dy != fy; ++dy )
{
c = getPixel( core::s32_min ( x + dx, Size.Width - 1 ) ,
core::s32_min ( y + dy, Size.Height - 1 )
);
a += c.getAlpha();
r += c.getRed();
g += c.getGreen();
b += c.getBlue();
}
}
s32 sdiv = s32_log2_s32(fx * fy);
a = core::s32_clamp( ( a >> sdiv ) + bias, 0, 255 );
r = core::s32_clamp( ( r >> sdiv ) + bias, 0, 255 );
g = core::s32_clamp( ( g >> sdiv ) + bias, 0, 255 );
b = core::s32_clamp( ( b >> sdiv ) + bias, 0, 255 );
c.set( a, r, g, b );
return c;
}
//! sets the Texture
void IBurningShader::setTextureParam( u32 stage, video::CSoftwareTexture2* texture, s32 lodLevel)
{
sInternalTexture *it = &IT[stage];
if ( it->Texture)
it->Texture->drop();
it->Texture = texture;
if ( it->Texture)
{
it->Texture->grab();
// select mignify and magnify ( lodLevel )
//SOFTWARE_DRIVER_2_MIPMAPPING_LOD_BIAS
it->lodLevel = lodLevel;
it->data = (tVideoSample*) it->Texture->lock(ETLM_READ_ONLY,
core::s32_clamp ( lodLevel + SOFTWARE_DRIVER_2_MIPMAPPING_LOD_BIAS, 0, SOFTWARE_DRIVER_2_MIPMAPPING_MAX - 1 ), 0);
// prepare for optimal fixpoint
it->pitchlog2 = s32_log2_s32 ( it->Texture->getPitch() );
const core::dimension2d<u32> &dim = it->Texture->getSize();
it->textureXMask = s32_to_fixPoint ( dim.Width - 1 ) & FIX_POINT_UNSIGNED_MASK;
it->textureYMask = s32_to_fixPoint ( dim.Height - 1 ) & FIX_POINT_UNSIGNED_MASK;
}
}
//! sets the Texture
void IBurningShader::setTexture( u32 stage, video::CSoftwareTexture2* texture, s32 lodLevel)
{
sInternalTexture *it = &IT[stage];
if ( it->Texture)
it->Texture->drop();
it->Texture = texture;
if ( it->Texture)
{
it->Texture->grab();
// select mignify and magnify ( lodLevel )
//SOFTWARE_DRIVER_2_MIPMAPPING_LOD_BIAS
it->lodLevel = lodLevel;
it->Texture->setCurrentMipMapLOD (
core::s32_clamp ( lodLevel + SOFTWARE_DRIVER_2_MIPMAPPING_LOD_BIAS, 0, SOFTWARE_DRIVER_2_MIPMAPPING_MAX - 1 )
);
// prepare for optimal fixpoint
it->pitchlog2 = s32_log2_s32 ( it->Texture->getPitch() );
it->textureXMask = s32_to_fixPoint ( it->Texture->getSize().Width - 1 ) & FIX_POINT_UNSIGNED_MASK;
it->textureYMask = s32_to_fixPoint ( it->Texture->getSize().Height - 1 ) & FIX_POINT_UNSIGNED_MASK;
}
}