void
SoGLMultiTextureImageElement::updateGL(const int unit)
{
const GLUnitData & glud =
(unit < PRIVATE(this)->unitdata.getLength()) ?
PRIVATE(this)->unitdata[unit] :
PRIVATE(this)->defaultdata;
if (glud.glimage) {
const cc_glglue * glue = cc_glglue_instance(PRIVATE(this)->cachecontext);
cc_glglue_glActiveTexture(glue, (GLenum) (int(GL_TEXTURE0) + unit));
const UnitData & ud = this->getUnitData(unit);
SoState * state = PRIVATE(this)->state;
SoGLDisplayList * dl = glud.glimage->getGLDisplayList(state);
// tag image (for GLImage LRU cache).
SoGLImage::tagImage(state, glud.glimage);
if (SoTextureCombineElement::isDefault(state, unit)) {
switch (ud.model) {
case DECAL:
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
break;
case MODULATE:
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
break;
case BLEND:
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND);
glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, ud.blendColor.getValue());
break;
case REPLACE:
// GL_REPLACE mode was introduced with OpenGL 1.1. It is
// considered the client code's responsibility to check
// that it can use this mode.
//
// FIXME: ..but we should do a sanity check anyway.
// 20030901 mortene.
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
break;
default:
assert(0 && "unknown model");
break;
}
}
else {
SoTextureCombineElement::apply(state, unit);
}
if (dl) {
dl->call(state);
}
cc_glglue_glActiveTexture(glue, (GLenum) GL_TEXTURE0);
}
}
SoGLDisplayList *
SoGLCubeMapImage::getGLDisplayList(SoState * state)
{
PRIVATE(this)->lock();
SoGLDisplayList * dl = PRIVATE(this)->findDL(state);
if (!dl) {
dl = new SoGLDisplayList(state,
SoGLDisplayList::TEXTURE_OBJECT);
if (dl) {
dl->ref();
dl->setTextureTarget((int) GL_TEXTURE_CUBE_MAP);
dl->open(state);
for (int i = 0; i < 6; i++) {
const SbImage * img = &PRIVATE(this)->image[i];
if (img && img->hasData()) {
SbVec2s size;
int numcomponents;
unsigned char * bytes = img->getValue(size, numcomponents);
GLenum format;
switch (numcomponents) {
default: // avoid compiler warnings
case 1: format = GL_LUMINANCE; break;
case 2: format = GL_LUMINANCE_ALPHA; break;
case 3: format = GL_RGB; break;
case 4: format = GL_RGBA; break;
}
// FIXME: resize image if not power of two
glTexImage2D(get_gltarget((Target) i),
0, numcomponents, size[0], size[1], 0,
format, GL_UNSIGNED_BYTE, bytes);
}
}
// FIXME: make it possible to configure filter and mipmap on/off
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// FIXME: make it possible to configure wrap modes
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
dl->close(state);
PRIVATE(this)->dlists.append(SoGLCubeMapImageP::dldata(dl));
}
}
PRIVATE(this)->unlock();
return dl;
}
