Lines Matching refs:dtdx
414 _swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
419 GLfloat dvdx = texH * ((t + dtdx) / (q + dqdx) - t * invQ);
436 _swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
441 GLfloat dtdx2 = (t + dtdx) / (q + dqdx) - t * invQ;
487 const GLfloat dtdx = span->attrStepX[attr][1];
493 GLfloat t = span->attrStart[attr][1] + span->leftClip * dtdx;
535 lambda[i] = _swrast_compute_lambda(dsdx, dsdy, dtdx, dtdy,
539 t += dtdx;
552 lambda[i] = _swrast_compute_lambda(dsdx, dsdy, dtdx, dtdy,
556 t += dtdx;
578 t += dtdx;
594 t += dtdx;
607 t += dtdx;
