void subCompute(TRasterFxPort &m_input, TTile &tile, double frame,
const TRenderSettings &ri, TPointD p00, TPointD p01,
TPointD p11, TPointD p10, int details, bool wireframe,
TDimension m_offScreenSize, bool isCast) {
TPixel32 bgColor;
TRectD outBBox, inBBox;
outBBox = inBBox = TRectD(tile.m_pos, TDimensionD(tile.getRaster()->getLx(),
tile.getRaster()->getLy()));
m_input->getBBox(frame, inBBox, ri);
if (inBBox == TConsts::infiniteRectD) // e' uno zerario
inBBox = outBBox;
int inBBoxLx = (int)inBBox.getLx() / ri.m_shrinkX;
int inBBoxLy = (int)inBBox.getLy() / ri.m_shrinkY;
if (inBBox.isEmpty()) return;
if (p00 == p01 && p00 == p10 && p00 == p11 &&
!isCast) // significa che non c'e' deformazione
{
m_input->compute(tile, frame, ri);
return;
}
TRaster32P rasIn;
TPointD rasInPos;
if (!wireframe) {
if (ri.m_bpp == 64 || ri.m_bpp == 48) {
TRaster64P aux = TRaster64P(inBBoxLx, inBBoxLy);
rasInPos = TPointD(inBBox.x0 / ri.m_shrinkX, inBBox.y0 / ri.m_shrinkY);
TTile tmp(aux, rasInPos);
m_input->compute(tmp, frame, ri);
rasIn = TRaster32P(inBBoxLx, inBBoxLy);
TRop::convert(rasIn, aux);
} else {
rasInPos = TPointD(inBBox.x0 / ri.m_shrinkX, inBBox.y0 / ri.m_shrinkY);
TTile tmp(TRaster32P(inBBoxLx, inBBoxLy), rasInPos);
m_input->allocateAndCompute(tmp, rasInPos, TDimension(inBBoxLx, inBBoxLy),
TRaster32P(), frame, ri);
rasIn = tmp.getRaster();
}
}
unsigned int texWidth = 2;
unsigned int texHeight = 2;
while (texWidth < (unsigned int)inBBoxLx) texWidth = texWidth << 1;
while (texHeight < (unsigned int)inBBoxLy) texHeight = texHeight << 1;
while (texWidth > 1024 || texHeight > 1024) // avevo usato la costante
// GL_MAX_TEXTURE_SIZE invece di
// 1024, ma non funzionava!
{
inBBoxLx = inBBoxLx >> 1;
inBBoxLy = inBBoxLy >> 1;
texWidth = texWidth >> 1;
texHeight = texHeight >> 1;
}
if (rasIn->getLx() != inBBoxLx || rasIn->getLy() != inBBoxLy) {
TRaster32P rasOut = TRaster32P(inBBoxLx, inBBoxLy);
TRop::resample(rasOut, rasIn,
TScale((double)rasOut->getLx() / rasIn->getLx(),
(double)rasOut->getLy() / rasIn->getLy()));
rasIn = rasOut;
}
int rasterWidth = tile.getRaster()->getLx() + 2;
int rasterHeight = tile.getRaster()->getLy() + 2;
assert(rasterWidth > 0);
assert(rasterHeight > 0);
TRectD clippingRect =
TRectD(tile.m_pos,
TDimensionD(tile.getRaster()->getLx(), tile.getRaster()->getLy()));
#if CREATE_GL_CONTEXT_ONE_TIME
int ret = wglMakeCurrent(m_offScreenGL.m_offDC, m_offScreenGL.m_hglRC);
assert(ret == TRUE);
#else
TOfflineGL offScreenRendering(TDimension(rasterWidth, rasterHeight));
//#ifdef _WIN32
offScreenRendering.makeCurrent();
//#else
//#if defined(LINUX) || defined(MACOSX)
// offScreenRendering.m_offlineGL->makeCurrent();
//#endif
#endif
checkErrorsByGL
// disabilito quello che non mi serve per le texture
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
glDisable(GL_DITHER);
glDisable(GL_DEPTH_TEST);
glCullFace(GL_FRONT);
glDisable(GL_STENCIL_TEST);
glDisable(GL_LOGIC_OP);
// creo la texture in base all'immagine originale
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
checkErrorsByGL
#if !CREATE_GL_CONTEXT_ONE_TIME
TRaster32P rasaux;
if (!wireframe) {
TRaster32P texture(texWidth, texHeight);
texture->clear();
rasaux = texture;
rasaux->lock();
texture->copy(rasIn);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glTexImage2D(GL_TEXTURE_2D, 0, 4, texWidth, texHeight, 0, GL_RGBA,
GL_UNSIGNED_BYTE, texture->getRawData());
}
#else
unsigned int texWidth = 1024;
unsigned int texHeight = 1024;
rasaux = rasIn;
rasaux->lock();
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, rasIn->getLx(), rasIn->getLy(),
GL_RGBA, GL_UNSIGNED_BYTE, rasIn->getRawData());
#endif
checkErrorsByGL
glEnable(GL_TEXTURE_2D);
// cfr. help: OpenGL/Programming tip/OpenGL Correctness Tips
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-rasterWidth * 0.5, rasterWidth * 0.5, -rasterHeight * 0.5,
rasterHeight * 0.5, -1, 1);
glViewport(0, 0, rasterWidth, rasterHeight);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
// do OpenGL draw
double lwTex = (double)(inBBoxLx - 1) / (double)(texWidth - 1);
double lhTex = (double)(inBBoxLy - 1) / (double)(texHeight - 1);
TPointD tex00 = TPointD(0.0, 0.0);
TPointD tex10 = TPointD(lwTex, 0.0);
TPointD tex11 = TPointD(lwTex, lhTex);
TPointD tex01 = TPointD(0.0, lhTex);
GLenum polygonStyle;
if (wireframe) {
polygonStyle = GL_LINE;
glDisable(GL_TEXTURE_2D);
} else
polygonStyle = GL_FILL;
checkErrorsByGL p00.x /= ri.m_shrinkX;
p00.y /= ri.m_shrinkY;
p10.x /= ri.m_shrinkX;
p10.y /= ri.m_shrinkY;
p11.x /= ri.m_shrinkX;
p11.y /= ri.m_shrinkY;
p01.x /= ri.m_shrinkX;
p01.y /= ri.m_shrinkY;
TPointD translate = TPointD(tile.m_pos.x + tile.getRaster()->getLx() * 0.5,
tile.m_pos.y + tile.getRaster()->getLy() * 0.5);
glTranslated(-translate.x, -translate.y, 0.0);
// disegno il poligono
double dist_p00_p01 = tdistance2(p00, p01);
double dist_p10_p11 = tdistance2(p10, p11);
double dist_p01_p11 = tdistance2(p01, p11);
double dist_p00_p10 = tdistance2(p00, p10);
bool vertical = (dist_p00_p01 == dist_p10_p11);
bool horizontal = (dist_p00_p10 == dist_p01_p11);
if (vertical && horizontal) details = 1;
glPolygonMode(GL_FRONT_AND_BACK, polygonStyle);
subdivision(p00, p10, p11, p01, tex00, tex10, tex11, tex01, clippingRect,
details);
if (!wireframe) {
// abilito l'antialiasing delle linee
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
// disegno il bordo del poligono
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glBegin(GL_QUADS);
glTexCoord2d(tex00.x, tex00.y);
tglVertex(p00);
glTexCoord2d(tex10.x, tex10.y);
tglVertex(p10);
glTexCoord2d(tex11.x, tex11.y);
tglVertex(p11);
glTexCoord2d(tex01.x, tex01.y);
tglVertex(p01);
glEnd();
// disabilito l'antialiasing per le linee
glDisable(GL_LINE_SMOOTH);
glDisable(GL_BLEND);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_TEXTURE_2D);
}
// force to finish
glFlush();
// rimetto il disegno dei poligoni a GL_FILL
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
// metto il frame buffer nel raster del tile
glPixelStorei(GL_UNPACK_ROW_LENGTH, rasterWidth);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
TRaster32P newRas(tile.getRaster()->getLx(), tile.getRaster()->getLy());
newRas->lock();
glReadPixels(1, 1, newRas->getLx(), newRas->getLy(), GL_RGBA,
GL_UNSIGNED_BYTE, (void *)newRas->getRawData());
newRas->unlock();
checkErrorsByGL
rasaux->unlock();
tile.getRaster()->copy(newRas);
}
void FreeDistortBaseFx::doCompute(TTile &tile, double frame, const TRenderSettings &ri)
{
if (!m_input.isConnected())
return;
//Upon deactivation, this fx does nothing.
if (m_deactivate->getValue()) {
m_input->compute(tile, frame, ri);
return;
}
//Get the source quad
TPointD p00_b = m_p00_b->getValue(frame);
TPointD p10_b = m_p10_b->getValue(frame);
TPointD p01_b = m_p01_b->getValue(frame);
TPointD p11_b = m_p11_b->getValue(frame);
//Get destination quad
TPointD p00_a = m_p00_a->getValue(frame);
TPointD p10_a = m_p10_a->getValue(frame);
TPointD p01_a = m_p01_a->getValue(frame);
TPointD p11_a = m_p11_a->getValue(frame);
if (m_isCastShadow) {
//Shadows are mirrored
tswap(p00_a, p01_a);
tswap(p10_a, p11_a);
}
//Get requested tile's geometry
TRasterP tileRas(tile.getRaster());
TRectD tileRect(convert(tileRas->getBounds()) + tile.m_pos);
//Call transform to get the minimal rectOnInput
TRectD inRect;
TRenderSettings riNew;
TRectD inBBox;
safeTransform(frame, 0, tileRect, ri, inRect, riNew, inBBox);
//Intersect with the bbox
inRect *= inBBox;
if (myIsEmpty(inRect))
return;
double scale = ri.m_affine.a11;
double downBlur = m_downBlur->getValue(frame) * scale;
double upBlur = m_upBlur->getValue(frame) * scale;
int brad = tceil(tmax(downBlur, upBlur));
inRect = inRect.enlarge(brad);
TDimension inRectSize(tceil(inRect.getLx()), tceil(inRect.getLy()));
TTile inTile;
m_input->allocateAndCompute(inTile, inRect.getP00(), inRectSize, tileRas, frame, riNew);
TPointD inTilePosRi = inTile.m_pos;
//Update quads by the scale factors
p00_b = riNew.m_affine * p00_b;
p10_b = riNew.m_affine * p10_b;
p01_b = riNew.m_affine * p01_b;
p11_b = riNew.m_affine * p11_b;
p00_a = ri.m_affine * p00_a;
p10_a = ri.m_affine * p10_a;
p01_a = ri.m_affine * p01_a;
p11_a = ri.m_affine * p11_a;
PerspectiveDistorter perpDistorter(
p00_b - inTile.m_pos, p10_b - inTile.m_pos, p01_b - inTile.m_pos, p11_b - inTile.m_pos,
p00_a, p10_a, p01_a, p11_a);
BilinearDistorter bilDistorter(
p00_b - inTile.m_pos, p10_b - inTile.m_pos, p01_b - inTile.m_pos, p11_b - inTile.m_pos,
p00_a, p10_a, p01_a, p11_a);
TQuadDistorter *distorter;
if (m_distortType->getValue() == PERSPECTIVE)
distorter = &perpDistorter;
else if (m_distortType->getValue() == BILINEAR)
distorter = &bilDistorter;
else
assert(0);
if (m_isCastShadow) {
TRaster32P ras32 = inTile.getRaster();
TRaster64P ras64 = inTile.getRaster();
if (ras32) {
if (m_fade->getValue(frame) > 0)
doFade(ras32, m_color->getValue(frame), m_fade->getValue(frame) / 100.0);
if (brad > 0)
doBlur(ras32, upBlur, downBlur,
m_upTransp->getValue(frame) / 100.0, m_downTransp->getValue(frame) / 100.0,
inBBox.y0 - inTile.m_pos.y, inBBox.y1 - inTile.m_pos.y);
else if (m_upTransp->getValue(frame) > 0 || m_downTransp->getValue(frame) > 0)
doTransparency(ras32, m_upTransp->getValue(frame) / 100.0, m_downTransp->getValue(frame) / 100.0,
inBBox.y0 - inTile.m_pos.y, inBBox.y1 - inTile.m_pos.y);
} else if (ras64) {
if (m_fade->getValue(frame) > 0)
doFade(ras64, toPixel64(m_color->getValue(frame)), m_fade->getValue(frame) / 100.0);
if (brad > 0)
doBlur(ras64, upBlur, downBlur,
m_upTransp->getValue(frame) / 100.0, m_downTransp->getValue(frame) / 100.0,
inBBox.y0 - inTile.m_pos.y, inBBox.y1 - inTile.m_pos.y);
else if (m_upTransp->getValue(frame) > 0 || m_downTransp->getValue(frame) > 0)
doTransparency(ras64, m_upTransp->getValue(frame) / 100.0, m_downTransp->getValue(frame) / 100.0,
inBBox.y0 - inTile.m_pos.y, inBBox.y1 - inTile.m_pos.y);
} else
assert(false);
}
distort(tileRas, inTile.getRaster(), *distorter, convert(tile.m_pos), TRop::Bilinear);
}
