+
+/**
+ * Scan the given 'used' register flag array for the first entry
+ * that's >= firstReg.
+ * \param used vector of flags indicating registers in use (as returned
+ * by _mesa_find_used_registers())
+ * \param usedSize size of the 'used' array
+ * \param firstReg first register to start searching at
+ * \return index of unused register, or -1 if none.
+ */
+GLint
+_mesa_find_free_register(const GLboolean used[],
+ GLuint usedSize, GLuint firstReg)
+{
+ GLuint i;
+
+ assert(firstReg < usedSize);
+
+ for (i = firstReg; i < usedSize; i++)