Lines Matching defs:dtdx
418 _swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
423 GLfloat dvdx = texH * ((t + dtdx) / (q + dqdx) - t * invQ);
440 _swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
445 GLfloat dtdx2 = (t + dtdx) / (q + dqdx) - t * invQ;
491 const GLfloat dtdx = span->attrStepX[attr][1];
497 GLfloat t = span->attrStart[attr][1] + span->leftClip * dtdx;
539 lambda[i] = _swrast_compute_lambda(dsdx, dsdy, dtdx, dtdy,
543 t += dtdx;
556 lambda[i] = _swrast_compute_lambda(dsdx, dsdy, dtdx, dtdy,
560 t += dtdx;
582 t += dtdx;
598 t += dtdx;
611 t += dtdx;