+/* Can do better with integer math
+ */
+#define INTERP_UB( t, dstub, outub, inub ) \
+do { \
+ GLfloat inf = UBYTE_TO_FLOAT( inub ); \
+ GLfloat outf = UBYTE_TO_FLOAT( outub ); \
+ GLfloat dstf = LINTERP( t, outf, inf ); \
+ UNCLAMPED_FLOAT_TO_UBYTE( dstub, dstf ); \
+} while (0)
+
+#define INTERP_CHAN( t, dstc, outc, inc ) \
+do { \
+ GLfloat inf = CHAN_TO_FLOAT( inc ); \
+ GLfloat outf = CHAN_TO_FLOAT( outc ); \
+ GLfloat dstf = LINTERP( t, outf, inf ); \
+ UNCLAMPED_FLOAT_TO_CHAN( dstc, dstf ); \
+} while (0)
+
+#define INTERP_UI( t, dstui, outui, inui ) \
+ dstui = (GLuint) (GLint) LINTERP( (t), (GLfloat) (outui), (GLfloat) (inui) )
+
+#define INTERP_F( t, dstf, outf, inf ) \
+ dstf = LINTERP( t, outf, inf )
+
+#define INTERP_4F( t, dst, out, in ) \
+do { \
+ dst[0] = LINTERP( (t), (out)[0], (in)[0] ); \
+ dst[1] = LINTERP( (t), (out)[1], (in)[1] ); \
+ dst[2] = LINTERP( (t), (out)[2], (in)[2] ); \
+ dst[3] = LINTERP( (t), (out)[3], (in)[3] ); \
+} while (0)
+
+#define INTERP_3F( t, dst, out, in ) \
+do { \
+ dst[0] = LINTERP( (t), (out)[0], (in)[0] ); \
+ dst[1] = LINTERP( (t), (out)[1], (in)[1] ); \
+ dst[2] = LINTERP( (t), (out)[2], (in)[2] ); \
+} while (0)
+
+#define INTERP_4CHAN( t, dst, out, in ) \
+do { \
+ INTERP_CHAN( (t), (dst)[0], (out)[0], (in)[0] ); \
+ INTERP_CHAN( (t), (dst)[1], (out)[1], (in)[1] ); \
+ INTERP_CHAN( (t), (dst)[2], (out)[2], (in)[2] ); \
+ INTERP_CHAN( (t), (dst)[3], (out)[3], (in)[3] ); \
+} while (0)
+
+#define INTERP_3CHAN( t, dst, out, in ) \
+do { \
+ INTERP_CHAN( (t), (dst)[0], (out)[0], (in)[0] ); \
+ INTERP_CHAN( (t), (dst)[1], (out)[1], (in)[1] ); \
+ INTERP_CHAN( (t), (dst)[2], (out)[2], (in)[2] ); \
+} while (0)
+
+#define INTERP_SZ( t, vec, to, out, in, sz ) \
+do { \
+ switch (sz) { \
+ case 4: vec[to][3] = LINTERP( (t), (vec)[out][3], (vec)[in][3] ); \
+ case 3: vec[to][2] = LINTERP( (t), (vec)[out][2], (vec)[in][2] ); \
+ case 2: vec[to][1] = LINTERP( (t), (vec)[out][1], (vec)[in][1] ); \
+ case 1: vec[to][0] = LINTERP( (t), (vec)[out][0], (vec)[in][0] ); \
+ } \
+} while(0)