Lines Matching defs:dy
75 * (dx=1/16, dy=1024) we'll need 4 + 10 = 14 fractional bits in
118 GLfloat dy; /* Y(v1) - Y(v0) */
119 GLfloat dxdy; /* dx/dy */
120 GLfixed fdxdy; /* dx/dy in fixed-point */
227 eMaj.dy = FixedToFloat(vMax_fy - vMin_fy);
229 eTop.dy = FixedToFloat(vMax_fy - vMid_fy);
231 eBot.dy = FixedToFloat(vMid_fy - vMin_fy);
235 const GLfloat area = eMaj.dx * eBot.dy - eBot.dx * eMaj.dy;
254 eMaj.dxdy = eMaj.dx / eMaj.dy;
267 eTop.dxdy = eTop.dx / eTop.dy;
277 eBot.dxdy = eBot.dx / eBot.dy;
288 * intersected by this line is one with maximal absolute dy; we
332 /* compute d?/dx and d?/dy derivatives */
338 span.attrStepX[FRAG_ATTRIB_WPOS][2] = oneOverArea * (eMaj_dz * eBot.dy - eMaj.dy * eBot_dz);
367 span.attrStepX[FRAG_ATTRIB_COL0][0] = oneOverArea * (eMaj_dr * eBot.dy - eMaj.dy * eBot_dr);
369 span.attrStepX[FRAG_ATTRIB_COL0][1] = oneOverArea * (eMaj_dg * eBot.dy - eMaj.dy * eBot_dg);
371 span.attrStepX[FRAG_ATTRIB_COL0][2] = oneOverArea * (eMaj_db * eBot.dy - eMaj.dy * eBot_db);
377 span.attrStepX[FRAG_ATTRIB_COL0][3] = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da);
403 span.attrStepX[FRAG_ATTRIB_TEX0][0] = oneOverArea * (eMaj_ds * eBot.dy - eMaj.dy * eBot_ds);
405 span.attrStepX[FRAG_ATTRIB_TEX0][1] = oneOverArea * (eMaj_dt * eBot.dy - eMaj.dy * eBot_dt);
420 span.attrStepX[FRAG_ATTRIB_WPOS][3] = oneOverArea * (eMaj_dw * eBot.dy - eMaj.dy * eBot_dw);
433 span.attrStepX[attr][c] = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da);
