bool
OpenSubdivPtexShader::bindPtexTexture(const MString& ptexFilename,
OpenSubdiv::OsdGLPtexTexture **osdPtexPtr,
int samplerUnit)
{
// Reload ptex texture
if (*osdPtexPtr) delete *osdPtexPtr;
*osdPtexPtr = loadPtex(ptexFilename);
if (*osdPtexPtr == NULL)
return false;
// Rebind
glActiveTexture(GL_TEXTURE0 + samplerUnit + 0);
glBindTexture(GL_TEXTURE_2D_ARRAY, (*osdPtexPtr)->GetTexelsTexture());
glActiveTexture(GL_TEXTURE0 + samplerUnit + 1);
glBindTexture(GL_TEXTURE_BUFFER, (*osdPtexPtr)->GetLayoutTextureBuffer());
glActiveTexture(GL_TEXTURE0 + samplerUnit + 2);
glBindTexture(GL_TEXTURE_BUFFER, (*osdPtexPtr)->GetPagesTextureBuffer());
// Reset
glActiveTexture(GL_TEXTURE0);
return true;
}
//=================================================== draw widget
//===============================================================
void TFWidgetRen::draw_widget()
{
glColor4f(.1, .07, .57, 1); //balls
float spos[3] = {0,0,0};
drawSphere(spos, blball); //bottom left
spos[0] = width;
drawSphere(spos, brball); //bottom right
spos[1] = height;
drawSphere(spos, trball); //top right
spos[0] = 0;
drawSphere(spos, tlball); //top left
glColor4f(.09, .34, .55, 1); //bars
float bpos[3] = {0,0,0};
drawBar(-90, WdgXAxis, height, bpos, lbar); //left
drawBar(90, WdgYAxis, width, bpos, bbar); //bottom
bpos[1] = height;
drawBar(90, WdgYAxis, width, bpos, tbar); //top
bpos[0] = width;
bpos[1] = 0;
drawBar(-90, WdgXAxis, height, bpos, rbar); //right
glColor4f(1,1,1,0); //transfer function map depth
glLoadName(tfsheet1);
//glEnable(GL_TEXTURE_3D_EXT);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_LIGHTING);
//glBindTexture(GL_TEXTURE_3D_EXT, gluvv.tf.ptextex);
glBegin(GL_QUADS);{ //draw the transfer function
glTexCoord3f(0, 0, .33333);
glVertex3f(barRad*1.5, barRad*1.5, 0);
glTexCoord3f(1, 0, .33333);
glVertex3f(width-barRad*1.5, barRad*1.5, 0);
glTexCoord3f(1, 1, .33333);
glVertex3f(width-barRad*1.5, height-barRad*1.5, 0);
glTexCoord3f(0, 1, .33333);
glVertex3f(barRad*1.5, height-barRad*1.5,0);
} glEnd();
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_3D_EXT);
glEnable(GL_LIGHTING); //---------------------------
draw_probe(); //draw probe data value
//-------------- load new pixel texture ----------------------------------
if(gluvv.tf.loadme){
clearPtex();
tris->rasterize(gluvv.tf.ptex);
brush->rasterize(gluvv.tf.ptex);
loadPtex();
gluvv.tf.loadme = 0;
} //----------------------------------------------------------------------
if(pickedTri){ //boundary emphasis slider
LevWidget * tt;
if(tt = tris->get(pickedTri)){
float slider = tt->getBE();
float bepos[3] = {(width - 2*ballRad)*slider + ballRad, height, 0};
drawSlider(90, WdgYAxis, bepos, beslider);
}
}
glColor4f(1,1,1,1); //transfer function map color
glLoadName(tfsheet1);
glEnable(GL_TEXTURE_3D_EXT);
if(mode == colorBlend){
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
else
glDisable(GL_BLEND);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_EQUAL);
glDisable(GL_LIGHTING);
glBindTexture(GL_TEXTURE_3D_EXT, gluvv.tf.ptextex);
glBegin(GL_QUADS);{ //draw the transfer function
glTexCoord3f(0, 0, .5);
glVertex3f(barRad*1.5, barRad*1.5, 0);
glTexCoord3f(1, 0, .5);
glVertex3f(width-barRad*1.5, barRad*1.5, 0);
glTexCoord3f(1, 1, .5);
glVertex3f(width-barRad*1.5, height-barRad*1.5, 0);
glTexCoord3f(0, 1, .5);
glVertex3f(barRad*1.5, height-barRad*1.5,0);
} glEnd();
glDepthFunc(GL_LESS);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_3D_EXT);
glEnable(GL_LIGHTING); //----------------------------
glPushMatrix();{ //draw levoy triangles
glTranslatef(ballRad, ballRad, ballRad);
tris->draw();
} glPopMatrix();
if(gluvv.picking) brush->draw();
}
