texcompress_s3tc_tmp.h - OpenGrok cross reference for /third_party/mesa3d/src/mesa/main/texcompress_s3tc

Lines Matching defs:alphabase
574    GLubyte alphabase[2], alphause[2];
583    /* find lowest and highest alpha value in block, alphabase[0] lowest, alphabase[1] highest */
584    alphabase[0] = 0xff; alphabase[1] = 0x0;
592             if (srccolors[j][i][3] > alphabase[1])
593                alphabase[1] = srccolors[j][i][3];
594             if (srccolors[j][i][3] < alphabase[0])
595                alphabase[0] = srccolors[j][i][3];
601    if ((alphabase[0] > alphabase[1]) && !(alphaabsmin && alphaabsmax)) { /* one color, either max or min */
603       /* || (alphabase[0] == alphabase[1] && !alphaabsmin && !alphaabsmax) */
624    else alphause[0] = alphabase[0];
626    else alphause[1] = alphabase[1];
692       we have valid alphabase colors which we absolutely need (alphabase[0] <= alphabase[1]) */
696          acutValues[aindex] = (alphabase[0] * (10 - (2*aindex + 1)) + alphabase[1] * (2*aindex + 1)) / 10;
712                alphadist = srccolors[j][i][3] - alphabase[0];
716                alphadist = srccolors[j][i][3] - (alphabase[0] * 4 + alphabase[1] * 1) / 5;
720                alphadist = srccolors[j][i][3] - (alphabase[0] * 3 + alphabase[1] * 2) / 5;
724                alphadist = srccolors[j][i][3] - (alphabase[0] * 2 + alphabase[1] * 3) / 5;
728                alphadist = srccolors[j][i][3] - (alphabase[0] * 1 + alphabase[1] * 4) / 5;
732                alphadist = srccolors[j][i][3] - alphabase[1];
751                if ((srccolors[j][i][3] > alphatest[1]) && (srccolors[j][i][3] < (255 -(alphabase[1] - alphabase[0]) / 28)))
753                if ((srccolors[j][i][3] < alphatest[0]) && (srccolors[j][i][3] > (alphabase[1] - alphabase[0]) / 28))
885       writedxt5encodedalphablock( blkaddr, alphabase[0], alphabase[1], alphaenc2 );