void LoadPoint(FILE *f, vcg::Point3f &p){
LoadFloat(f, p.X() );
LoadFloat(f, p.Z() );
LoadFloat(f, p.Y() );
//printf("(%f,%f,%f) ",p[0],p[1],p[2]);
}
static void norm2int(vcg::Point3f res, Byte &zenb,Byte &azib){
double zen = atan2(res.Z(), res.X() );
double azi = acos(res.Y() );
int zeni = int( zen / (2 * M_PI ) * 255.0);
int azii = int( azi / (2 * M_PI ) * 255.0);
if (zeni>255) zeni -= 255;
if (zeni<0) zeni += 255;
if (azii>255) azii -= 255;
if (azii<0) azii += 255;
zenb = zeni;
azib = azii;
}
void SdfGpuPlugin::calculateObscurance(FramebufferObject* fboFront, FramebufferObject* fboBack, FramebufferObject* nextBack, const vcg::Point3f& cameraDir, float bbDiag)
{
mFboResult->bind();
glEnable(GL_SCISSOR_TEST);
glScissor(0,0,mResTextureDim,mNumberOfTexRows);
GLenum buffers[] = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT };
glDrawBuffers(2, buffers);
glViewport(0, 0, mResTextureDim, mResTextureDim);
GLfloat mv_pr_Matrix_f[16]; // modelview-projection matrix
glGetFloatv(GL_MODELVIEW_MATRIX, mv_pr_Matrix_f);
glMatrixMode(GL_PROJECTION);
glMultMatrixf(mv_pr_Matrix_f);
glGetFloatv(GL_PROJECTION_MATRIX, mv_pr_Matrix_f);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDepthMask(GL_FALSE);
glDisable(GL_DEPTH_TEST);
glEnable (GL_BLEND);
glBlendFunc (GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
glUseProgram(mObscuranceProgram->id());
assert(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT)==GL_FRAMEBUFFER_COMPLETE_EXT && "before draw");
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fboFront->getAttachedId(GL_DEPTH_ATTACHMENT));
mObscuranceProgram->setUniform1i("depthTextureFront",0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, fboBack->getAttachedId(GL_DEPTH_ATTACHMENT));
mObscuranceProgram->setUniform1i("depthTextureBack",1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, mVertexCoordsTexture->id());
mObscuranceProgram->setUniform1i("vTexture",2);
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, mVertexNormalsTexture->id());
mObscuranceProgram->setUniform1i("nTexture",3);
//next depth layer, see TraceRays function for an explanation
if(nextBack != NULL)
{
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, nextBack->getAttachedId(GL_DEPTH_ATTACHMENT));
mObscuranceProgram->setUniform1i("depthTextureNextBack",4);
}
// Set view direction
mObscuranceProgram->setUniform3f("viewDirection", cameraDir.X(), cameraDir.Y(), cameraDir.Z());
// Set ModelView-Projection Matrix
mObscuranceProgram->setUniformMatrix4fv( "mvprMatrix", mv_pr_Matrix_f, 1, GL_FALSE );
// Set texture Size
mObscuranceProgram->setUniform1f("texSize", mPeelingTextureSize);
// Set viewport Size
mObscuranceProgram->setUniform1f("viewpSize", mResTextureDim );
mObscuranceProgram->setUniform1f("tau", mTau);
mObscuranceProgram->setUniform1f("maxDist", bbDiag);
//just a flag to know how many layers to use for z-fighting removal
if(nextBack == NULL)
mObscuranceProgram->setUniform1i("firstRendering",1);
else
mObscuranceProgram->setUniform1i("firstRendering",0);
// Screen-aligned Quad
glBegin(GL_QUADS);
glVertex3f(-1.0f, -1.0f, 0.0f); //L-L
glVertex3f( 1.0f, -1.0f, 0.0f); //L-R
glVertex3f( 1.0f, 1.0f, 0.0f); //U-R
glVertex3f(-1.0f, 1.0f, 0.0f); //U-L
glEnd();
assert(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT)==GL_FRAMEBUFFER_COMPLETE_EXT && "after draw");
mFboResult->unbind();
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glDisable(GL_SCISSOR_TEST);
}
void SdfGpuPlugin::calculateSdfHW(FramebufferObject* fboFront, FramebufferObject* fboBack, FramebufferObject* fboPrevBack, const vcg::Point3f& cameraDir)
{
mFboResult->bind();
glEnable(GL_SCISSOR_TEST);
glScissor(0,0,mResTextureDim,mNumberOfTexRows);
GLenum buffers[] = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT };
glDrawBuffers(2, buffers);
glViewport(0, 0, mResTextureDim, mResTextureDim);
GLfloat mv_pr_Matrix_f[16]; // modelview-projection matrix
glGetFloatv(GL_MODELVIEW_MATRIX, mv_pr_Matrix_f);
glMatrixMode(GL_PROJECTION);
glMultMatrixf(mv_pr_Matrix_f);
glGetFloatv(GL_PROJECTION_MATRIX, mv_pr_Matrix_f);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDisable(GL_DEPTH_TEST);
// glDepthMask(GL_FALSE);
glEnable (GL_BLEND);
glBlendFunc (GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
glUseProgram(mSDFProgram->id());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fboFront->getAttachedId(GL_DEPTH_ATTACHMENT));
mSDFProgram->setUniform1i("depthTextureFront",0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, fboBack->getAttachedId(GL_DEPTH_ATTACHMENT));
mSDFProgram->setUniform1i("depthTextureBack",1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, fboBack->getAttachedId(GL_COLOR_ATTACHMENT0));
mSDFProgram->setUniform1i("normalTextureBack",2);
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, mVertexCoordsTexture->id());
mSDFProgram->setUniform1i("vTexture",3);
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, mVertexNormalsTexture->id());
mSDFProgram->setUniform1i("nTexture",4);
//previous depth layer, see TraceRays function for an explanation
if(fboPrevBack)
{
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_2D, fboPrevBack->getAttachedId(GL_DEPTH_ATTACHMENT));
mSDFProgram->setUniform1i("depthTexturePrevBack",5);
}
// Set view direction
mSDFProgram->setUniform3f("viewDirection", cameraDir.X(), cameraDir.Y(), cameraDir.Z());
// Set ModelView-Projection Matrix
mSDFProgram->setUniformMatrix4fv( "mvprMatrix", mv_pr_Matrix_f, 1, GL_FALSE );
vcg::Matrix44f mvprINV(mv_pr_Matrix_f);
mvprINV.transposeInPlace();
vcg::Invert(mvprINV);
mSDFProgram->setUniformMatrix4fv( "mvprMatrixINV", mvprINV.V(), 1, GL_TRUE );
// Set texture Size
mSDFProgram->setUniform1f("texSize", mPeelingTextureSize);
// Set viewport Size
mSDFProgram->setUniform1f("viewpSize", mResTextureDim );
mSDFProgram->setUniform1f("minCos", mMinCos);
//just a flag to know how many layers to use for z-fighting removal
if(fboPrevBack == NULL)
mSDFProgram->setUniform1i("firstRendering",1);
else
mSDFProgram->setUniform1i("firstRendering",0);
if(mRemoveFalse)
mSDFProgram->setUniform1i("removeFalse",1);
else
mSDFProgram->setUniform1i("removeFalse",0);
if(mRemoveOutliers)
mSDFProgram->setUniform1i("removeOutliers",1);
else
mSDFProgram->setUniform1i("removeOutliers",0);
// Screen-aligned Quad
glBegin(GL_QUADS);
glVertex3f(-1.0f, -1.0f, 0.0f); //L-L
glVertex3f( 1.0f, -1.0f, 0.0f); //L-R
glVertex3f( 1.0f, 1.0f, 0.0f); //U-R
glVertex3f(-1.0f, 1.0f, 0.0f); //U-L
glEnd();
mFboResult->unbind();
glEnable(GL_DEPTH_TEST);
// glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glDisable(GL_SCISSOR_TEST);
}
void SavePoint16(FILE *f, vcg::Point3f p) {
SaveShort(f, int(p.X()*RATIO*64) );
SaveShort(f, int(p.Z()*RATIO*64) );
SaveShort(f, int(p.Y()*RATIO*64) );
}
void SavePoint(FILE *f, vcg::Point3f p) {
SaveFloat(f, p.X() );
SaveFloat(f, p.Z() );
SaveFloat(f, p.Y() );
}