pipelined_texture.cpp

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#include "pipelined_texture.h"

PipelinedTexture::PipelinedTexture() : Texture() {}
unsigned char* PipelinedTexture::beginMutate()
{
    return data;
}

Texture* PipelinedTexture::Original()
{
    //Had to duplicate the Texture::Original() function otherwise VC++ 6 would not compile anymore
    //reporting an undefined reference to Texture::Original()
    if (original)
        return original->Original();
    else
        return this;
}

void PipelinedTexture::endMutate( int xoffset, int yoffset, int width, int height )
{
    GFXTransferSubTexture( data, name, xoffset, yoffset, width, height, TEXTURE_2D );
}

PipelinedTexture::PipelinedTexture( unsigned int width, unsigned int height, unsigned char *current,
                                    unsigned char *last ) : Texture()
{
    this->sizeX    = width;
    this->sizeY    = height;
    this->clone    = 0;
    ismipmapped    = BILINEAR;
    mode           = _24BITRGBA;
    data           = new unsigned char[4*width*height];
    stage          = 0;
    original       = NULL;
    refcount       = 0;
    texture_target = TEXTURE2D;
    image_target   = TEXTURE_2D;
    GFXCreateTexture( sizeX, sizeY, (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ), &name, NULL,
                      (stage == 1) ? 0 : 1 );
    GFXCreateTexture( sizeX,
                      sizeY,
                      (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ),
                      &this->current,
                      NULL,
                      (stage == 1) ? 0 : 1 );
    GFXCreateTexture( sizeX,
                      sizeY,
                      (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ),
                      &this->last,
                      NULL,
                      (stage == 1) ? 0 : 1 );
    if (current)
        GFXTransferTexture( current, this->current, sizeX, sizeY,
                            (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ), TEXTURE_2D );
    if (last)
        GFXTransferTexture( last, this->last, sizeX, sizeY,
                            (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ), TEXTURE_2D );
}

void PipelinedTexture::MakeActive()
{
    GFXSelectTexture( current, stage );
}
void PipelinedTexture::MakeLastActive()
{
    GFXSelectTexture( last, 0 );
}
void PipelinedTexture::MakeBothActive()
{
    GFXSelectTexture( current, stage );
    GFXSelectTexture( last, (stage == 1) ? 0 : 1 );
}
void PipelinedTexture::Swap()
{
    stage   = (stage+1)%2;
    int tmp = name;
    name    = last;
    last    = current;
    current = tmp;
    if (clone) {
        clone--;
        GFXCreateTexture( sizeX, sizeY, (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ), &name, NULL,
                          (stage == 1) ? 0 : 1 );
    }
}

Texture* PipelinedTexture::Clone()
{
    PipelinedTexture *retval = new PipelinedTexture();
    *retval = *this;
    retval->last    = last;
    retval->current = current;
    retval->clone   = 2;
    int bpp = (mode == _24BITRGBA) ? 4 : ( (mode == _8BIT) ? 1 : 3 );
    retval->data    = new unsigned char[sizeX*sizeY*bpp];
    memcpy( retval->data, data, bpp*sizeof (unsigned char)*sizeX*sizeY );
    GFXCreateTexture( sizeX, sizeY, (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ), &name, NULL,
                      (stage == 1) ? 0 : 1, BILINEAR, TEXTURE2D );
    GFXTransferTexture( retval->data,
                        name,
                        sizeX,
                        sizeY,
                        (mode == _24BITRGBA) ? RGBA32 : ( (mode == _8BIT) ? PALETTE8 : RGB32 ),
                        TEXTURE_2D );
    return retval;
}

PipelinedTexture::~PipelinedTexture()
{
    if (clone < 2)
        GFXDeleteTexture( current );
    if (!clone)
        GFXDeleteTexture( last );
    GFXDeleteTexture( name );
}